CN114489185B

CN114489185B - Control method and control system for torpedo ladle baking

Info

Publication number: CN114489185B
Application number: CN202210170174.7A
Authority: CN
Inventors: 陈晓光; 袁军; 郁景民; 张闯; 李金超; 党志东; 郝晓静; 史宝双; 张博; 范博文; 李亮; 桂敬伟
Original assignee: Qinhuangdao Qinye Heavy Industry Co ltd
Current assignee: Qinhuangdao Qinye Heavy Industry Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2023-03-03
Anticipated expiration: 2042-02-24
Also published as: CN114489185A

Abstract

The present disclosure provides a control method and a control system for torpedo ladle baking, the control method comprising: acquiring the current actual temperature; performing feedforward temperature compensation on the current actual temperature to obtain disturbance temperature deviation; determining gas air inflow and air inflow based on the disturbance temperature deviation; and conveying the coal gas and the air to the torpedo tank according to the coal gas inflow and the air inflow. The method corrects the final gas air inflow and the air inflow by performing feedforward temperature compensation on the current actual temperature and combining fuzzy compensation on the air-fuel ratio, so that the gas air inflow and the air inflow are more accurate and matched, and when the torpedo tank is baked, the fuel can be ensured to be completely combusted, the fuel utilization rate can be effectively improved, the emission of harmful gas is reduced, and the problems of energy waste, environmental pollution and the like are avoided; in addition, the baking temperature is accurately regulated and controlled, the disturbance resistance is strong, and the baking quality is greatly improved.

Description

Control method and control system for torpedo ladle baking

Technical Field

The disclosure relates to the technical field of torpedo ladle control, in particular to a control method and a control system for torpedo ladle baking.

Background

With the development of converter steelmaking, torpedo ladle trucks are widely used in China due to the advantages of large volume, small temperature drop of molten iron, high automation degree and the like, and torpedo ladles must be baked according to the specified requirements before loading and transporting blast furnace molten iron. The torpedo ladle baking device is a large energy consumption household in a steelmaking process, and the conventional torpedo ladle baking device can be divided into a traditional direct-fired torpedo ladle baking device and a heat-accumulating type torpedo ladle baking device if the flue gas waste heat is recycled.

The traditional direct-fired torpedo tank baking device takes coke oven gas, converter gas or blast furnace gas and the like as fuels, the fuels are mixed with normal-temperature air which is not preheated, and the mixed gas is combusted in a torpedo tank through a T-shaped combustor, so that the torpedo tank is baked; the heat accumulating type torpedo tank baking device also takes coke oven gas, converter gas or blast furnace gas and the like as fuels to realize the baking of the torpedo tank. However, when the traditional direct-fired torpedo ladle baking device is used for baking torpedo ladles, the fuel cannot be completely combusted, high-temperature smoke is directly discharged into the atmosphere, energy waste and environmental pollution are caused, and the baking quality is low.

Disclosure of Invention

In view of this, an object of the embodiments of the present disclosure is to provide a control method and a control system for torpedo ladle baking, which can avoid energy waste and environmental pollution, achieve energy saving and emission reduction, and ensure the baking quality of torpedo ladles.

In a first aspect, an embodiment of the present disclosure provides a control method for torpedo ladle baking, including:

acquiring the current actual temperature;

carrying out feedforward temperature compensation on the current actual temperature to obtain disturbance temperature deviation;

determining gas air inflow and air inflow based on the disturbance temperature deviation;

and conveying the coal gas and the air to the torpedo tank according to the coal gas air inflow and the air inflow.

In a possible implementation, the performing feed-forward temperature compensation on the current actual temperature to obtain a disturbance temperature deviation includes:

calculating the current actual temperature and the last actual temperature to obtain a current temperature deviation;

taking a difference value between the current temperature deviation and a preset threshold value as the disturbance temperature deviation under the condition that the current temperature deviation is larger than the preset threshold value; the preset threshold is the product of the standard temperature and the overshoot of the current baking stage;

and taking the sum of the current temperature deviation and the preset threshold as the disturbance temperature deviation under the condition that the current temperature deviation is smaller than or equal to the preset threshold.

In one possible embodiment, the determining the gas intake air amount based on the disturbance temperature deviation comprises:

acquiring the standard temperature of the current baking stage;

calculating to obtain a first opening degree of the gas regulating valve based on the standard temperature and the current actual temperature;

correcting the first opening degree by using the disturbance temperature deviation to obtain a second opening degree;

and determining the gas inlet quantity based on the second opening degree of the gas regulating valve.

In a possible embodiment, the determining the gas inflow amount based on the second gas amount includes:

acquiring a real-time opening degree;

calculating the real-time opening and the second opening to obtain the current gas flow deviation;

determining a target opening degree based on the second opening degree, the current gas flow deviation and the real-time opening degree;

and determining the gas inlet quantity based on the target opening degree.

In one possible embodiment, determining the air intake based on the second gas amount comprises:

acquiring a standard air-fuel ratio of a current baking stage;

and determining the air intake air amount based on the standard air-fuel ratio, the second opening degree and the current air flow rate.

In one possible embodiment, the determining the air intake amount based on the standard air-fuel ratio, the second opening degree, and the current air flow rate includes:

determining a third opening degree of an air regulating valve based on the standard air-fuel ratio and the second opening degree;

calculating the third opening and the current opening of the air regulating valve to obtain a current air flow deviation value;

determining the air intake amount based on the standard air-fuel ratio, the current air flow deviation value, and the current air flow.

In one possible embodiment, the determining the air intake amount based on the standard air-fuel ratio, the current air flow deviation value, and the current air flow includes:

acquiring a current actual air-fuel ratio;

calculating the current actual air-fuel ratio and the standard air-fuel ratio to obtain the current air-fuel ratio deviation;

calculating the current air-fuel ratio deviation and the last air-fuel ratio deviation to obtain the change rate of the current air-fuel ratio deviation;

determining a compensation coefficient based on a fuzzy control rule base, the current air-fuel ratio deviation and the current air-fuel ratio deviation change rate;

determining the air intake amount based on the compensation factor, the current air flow deviation value, and the current air flow.

In a second aspect, an embodiment of the present disclosure further provides a control system for torpedo ladle baking, which includes an acquisition module and a processing module:

the acquisition module is configured to acquire a current actual temperature;

the processing module is configured to perform feedforward temperature compensation on the current actual temperature to obtain a disturbance temperature deviation; determining gas air inflow and air inflow based on the disturbance temperature deviation; and conveying the coal gas and the air to the torpedo tank according to the coal gas air inflow and the air inflow.

In a third aspect, an embodiment of the present disclosure further provides a storage medium, where the computer readable storage medium has a computer program stored thereon, and the computer program, when executed by a processor, performs the following steps:

acquiring the current actual temperature;

In a fourth aspect, the present disclosure further provides an electronic device, including: a processor and a memory, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating over a bus when an electronic device is operating, the machine-readable instructions when executed by the processor performing the steps of:

acquiring the current actual temperature;

In the embodiment of the disclosure, feed-forward temperature compensation is performed on the current actual temperature to correct the gas air inflow and the air inflow, further, fuzzy compensation is performed on the air-fuel ratio, and the final gas air inflow and the air inflow are further corrected, so that the gas air inflow and the air inflow are more accurate and matched, when a torpedo tank is baked, the fuel can be ensured to be completely burned, namely the fuel utilization rate can be effectively improved, and the emission of harmful gas is reduced; and under the dynamic regulation of the PID double closed-loop cascade fuzzy control system, the regulation and control of the baking temperature are accurate, the disturbance resistance is strong, and the baking quality is greatly improved.

In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the present disclosure or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and other drawings can be obtained by those skilled in the art without inventive exercise.

FIG. 1 illustrates a flow chart of a control method provided by the present disclosure;

FIG. 2 is a flow chart illustrating a feedforward temperature compensation of a current actual temperature to obtain a disturbance temperature deviation in the control method provided by the present disclosure;

FIG. 3 is a flow chart illustrating the determination of the gas inlet amount in one control method provided by the present disclosure;

FIG. 4 is a schematic diagram illustrating a disturbance temperature deviation membership function in the control method provided by the present disclosure;

FIG. 5 is a schematic diagram illustrating membership functions in the control method provided by the present disclosure;

FIG. 6 is a flow chart illustrating the determination of the gas inlet amount in another control method provided by the present disclosure;

FIG. 7 is a flow chart illustrating the determination of the air intake in one control method provided by the present disclosure;

fig. 8 shows a flowchart for determining an air intake amount in another control method provided by the present disclosure;

FIG. 9 shows a flow chart for determining an air intake amount in another control method provided by the present disclosure;

FIG. 10 shows a schematic structural diagram of a control system provided by the present disclosure;

fig. 11 shows a schematic structural diagram of an electronic device provided by the present disclosure.

Detailed Description

Various aspects and features of the disclosure are described herein with reference to the drawings.

It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

These and other characteristics of the present disclosure will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.

It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

The description may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.

Fig. 1 shows a flowchart of a control method for torpedo ladle baking provided by the present disclosure, which is applied to a control system for torpedo ladle baking, wherein the specific steps include S101-S104.

And S101, acquiring the current actual temperature.

Optionally, the current actual temperature of the torpedo ladle is obtained in real time through the temperature detection device, and after the current actual temperature is obtained, the current actual temperature is sent to a processing device such as a processor by the temperature detection device, so that the torpedo ladle baking is controlled based on the current actual temperature.

S102, performing feedforward temperature compensation on the current actual temperature to obtain disturbance temperature deviation.

After the current actual temperature is obtained, performing feed-forward temperature compensation on the current actual temperature according to the method flowchart shown in fig. 2 to obtain a disturbance temperature deviation, wherein the specific steps include S201-S203.

S201, calculating the current actual temperature and the last actual temperature to obtain the current temperature deviation.

Optionally, the current actual temperature in the torpedo at the current sampling moment is obtained

And the last actual temperature in the torpedo at the previous sampling time from the log or database

Calculating the current actual temperature and the last actual temperature by the following formula (1) to obtain the current temperature deviation

。

（1）

Wherein,

which is indicative of the current temperature deviation and,

which is indicative of the current actual temperature of the temperature,

representing the actual temperature.

Furthermore, the current temperature deviation of the current sampling moment can be recorded

And recording the last temperature deviation of the last sampling time

Calculating the current temperature deviation and the last temperature deviation through the following formula (2) to obtain the temperature deviation change rate of the torpedo tank

。

（2）

Wherein,

the rate of change of the temperature deviation is indicated,

indicating the last temperature deviation.

S202, taking the difference value between the current temperature deviation and a preset threshold value as a disturbance temperature deviation under the condition that the current temperature deviation is larger than the preset threshold value; the preset threshold is the product of the standard temperature and the overshoot of the current baking stage.

And S203, taking the sum of the current temperature deviation and a preset threshold as the disturbance temperature deviation under the condition that the current temperature deviation is less than or equal to the preset threshold.

Optionally, after obtaining the current temperature deviation, comparing the current temperature deviation with a preset threshold, where the preset threshold is a product of a standard temperature of the current baking stage and the overshoot.

Taking the difference value between the current temperature deviation and a preset threshold value as a disturbance temperature deviation under the condition that the current temperature deviation is larger than the preset threshold value; and taking the sum of the current temperature deviation and the preset threshold as the disturbance temperature deviation under the condition that the current temperature deviation is less than or equal to the preset threshold.

It should be noted that the baking curves corresponding to torpedo cars of different specifications or different types are different, and optionally, the baking curve meeting the baking process of the current type of torpedo car may be selected according to the different specifications of torpedo cars or from models. The refractory material baking curve of the torpedo tank generally comprises a plurality of temperature rise sections and a plurality of heat preservation sections, for example, the baking curve disclosed by the invention comprises 3 temperature rise sections (0-300 ℃, 300-600 ℃, 600-900 ℃) and 3 heat preservation sections (300 ℃,600 ℃,900 ℃).

If the baking curve of a certain specification torpedo tank consists of N sections of heating and heat preservation sections, the current baking curve operates at

Segment of a baking curve having an onset temperature of

The end temperature of the baking curve of the segment is

And the duration of the baking process is

Then, the standard temperature of the current baking stage or the current baking time can be calculated according to the following formula (3)

。

（3）

Wherein,

the standard temperature is expressed in terms of the temperature,

indicating the baking process entered into

The time of continuous operation after the segment,

is shown as

The starting temperature of the segment baking curve;

is shown as

The end temperature of the segment baking curve,

indicating the duration of the toasting process.

Here, since the baking temperature rise process includes a plurality of temperature rise sections, the temperature rise speed of each temperature rise section is different, and the adjustment of each temperature rise process cannot be completed by simply selecting a group of proportional-integral-derivative controller (PID) parameters with high indexes, three values of proportion P, integral I and derivative D of the outer ring temperature loop, the inner ring gas loop and the air loop need to be respectively set according to the temperature ranges of each temperature rise section and each heat preservation section, so that the optimal combination of three groups of data P, I, D is obtained according to the debugging result, and the temperature control precision can be ensured. At this time, when the baking process is in the j-th section of the temperature rising section, the temperature rising speed of the current temperature rising baking section is calculated by the following formula (4).

（4）

Wherein,

j represents when the baking process is in the j-th stage, in the above formula

Represents the baking curve model enters the j section settingThe duration of the operation time of the mobile terminal,

represents the starting temperature of the j-th section baking curve,

the end temperature of the j-th baking curve is shown. Wherein,

。

in practical application, in the normal baking process of the torpedo cars, if sudden large disturbance does not occur, the temperature PID controller of the control system controls the heating rate of the torpedo cars according to different baking stages

The PID parameters of each stage of value setting can meet the temperature rise change of the system, and the method has quick dynamic response capability and system steady-state performance. Wherein, the control system of the disclosure is provided with a temperature feedforward fuzzy disturbance rejection controller to eliminate and inhibit overshoot of the PID controller which is higher than the temperature and suddenly appears in the baking process through the temperature feedforward fuzzy disturbance rejection controller

The disturbance deviation of (1). Further, whether the current temperature deviation meets the formula (5) or not is judged, that is, the current temperature deviation is compared with a preset threshold value.

（5）

Wherein,

which is indicative of the current temperature deviation and,

the amount of overshoot is indicated,

the standard temperature is indicated.

Optionally, if the current temperature deviation satisfies formula (5), that is, if the absolute value of the current temperature deviation is smaller than the preset threshold, adjusting the error of the current actual temperature by using the temperature PID controller; and if the current temperature deviation meets the following formula (6), namely the absolute value of the current temperature deviation is greater than or equal to a preset threshold value, adjusting the error of the current actual temperature through the temperature feedforward fuzzy disturbance rejection controller.

（6）

Wherein,

which is indicative of the current temperature deviation and,

the amount of overshoot is indicated,

the standard temperature is indicated.

Wherein the value is when the system temperature is less than 200 ℃ after the temperature PID controller is debugged

Set to 5% when the system temperature is greater than 200 deg.C

The setting was 3%.

Further, the disturbance temperature deviation is calculated by the following formula (7).

（7）

Wherein,

the temperature deviation of the disturbance is represented,

which is indicative of the current temperature deviation and,

the amount of overshoot is indicated,

the standard temperature is indicated.

And S103, determining gas air inflow and air inflow based on the disturbance temperature deviation.

And after obtaining the disturbance temperature deviation, respectively determining the gas intake quantity and the air intake quantity based on the disturbance temperature deviation. Alternatively, the gas inlet amount may be determined by referring to a method flowchart shown in fig. 3, and the specific steps include S301 to S304.

S301, acquiring the standard temperature of the current baking stage.

S302, calculating to obtain a first opening degree of the gas regulating valve based on the standard temperature and the current actual temperature.

And S303, correcting the first opening degree by using the disturbance temperature deviation to obtain a second opening degree.

And S304, determining the gas inlet quantity based on the second opening degree of the gas regulating valve.

In a specific implementation, the standard temperature for the current stage of toasting is determined based on a toasting profile. In the case where the baking stage is in the j-th stage, the actual deviation temperature deviation and the actual temperature deviation change rate are determined by the following equations (8) and (9), respectively.

（8）

（9）

Wherein,

the actual deviation temperature deviation is represented by a deviation,

the rate of change of the actual temperature deviation is indicated,

the standard temperature is expressed in terms of the temperature,

representing the current actual temperature as a feedback value to the temperature PID controller.

Further, the actual deviation temperature deviation is calculated through a temperature PID controller, and a first opening degree of the gas regulating valve is obtained, wherein the control system in the disclosure is a periodic discrete control system controlled by a PLC, and therefore the first opening degree is calculated through the following formula (10) according to a discrete PID control principle.

（10）

Wherein,

which indicates the first opening degree of the liquid crystal,

represents the scaling factor of the outer loop temperature PID controller,

the value of the integral coefficient is represented by,

denotes a differential coefficient, k denotes controlSystem for providing a visual indication of the location of a user

Is the sampling interval of the sampling period.

The roasting and temperature rising process of the torpedo ladle is a process with large inertia, more disturbance and complex interference factors. When the conditions such as gas pressure, flow change or heat value disturbance occur in the baking process, the PID controller is singly used for adjusting the temperature change of the system, the system disturbance is difficult to rapidly eliminate, and the oscillation of the temperature control process is easy to cause.

Considering that the disturbance size, the change speed and the temperature rise stage in the torpedo ladle baking process all have certain influence on the opening degree, the fuzzy language set and the fuzzy domain of the fuzzy input quantity of the temperature feedforward fuzzy disturbance rejection controller can be comprehensively considered. To meet the fast response of the system to the disturbance and the accuracy of the control, the disturbance temperature deviation in this disclosure

The simulation language of (1) includes the following 7 levels: over-large temperature difference

Temperature difference is positive

The temperature difference is small

Zero, zero

Small temperature difference

Large temperature difference

Excessive temperature difference

. Therefore, the current temperature deviation

The fuzzy language set of (a) is expressed as:

its domain of ambiguity

Comprises the following steps:

. At this time, the temperature deviation is disturbed

Has a value range of

Corresponding universe of ambiguity

Then perturb the temperature deviation

To its domain of ambiguity

The mapping formula (2) can be expressed as the following formula (11).

（11）

Wherein,

a domain of ambiguity that represents the temperature deviation of the disturbance,

the temperature deviation of the disturbance is shown,

a constant for defining the temperature deviation of the disturbance,

the value of the number is 2,

the amount of overshoot is indicated,

the standard temperature is indicated.

Optionally, the fuzzy discourse field in the previous step is taken

The membership function of (a) is a triangular membership function and the deviation is at zero (a)

) The vicinity requires higher response sensitivity and adjustment accuracy, and hence, the value of zero (c) ((m))

) The slope of the nearby triangular membership function should be larger and biased toward zero (

) The domain is centralized. The membership function selection in this disclosure refers to fig. 4.

Here, the rate of change of temperature deviation

Has a basic discourse of

，

To define constants for the range of variation of the rate of change of the temperature deviation, here

. Rate of change of temperature deviation

Fuzzy universe of

Is composed of

Rate of change of temperature deviation

The fuzzy language set of (1) is:

. Further, rate of change of temperature deviation

To its domain of ambiguity

Can be expressed as the following formula (12).

（12）

Wherein,

a domain of ambiguity that represents the rate of change of the temperature deviation,

the rate of change of the temperature deviation is indicated,

a constant for defining a range of variation of the rate of change of the temperature deviation,

the value of the number is 2,

the amount of overshoot is indicated and,

the standard temperature is indicated.

In the implementation, the fuzzy domain of the temperature deviation change rate of the control system is taken

、NS、ZO、

、

Is a triangular function, zero of the deviation

) The larger gradient of the membership function of the language near the domain meets the rapid dynamic response of the system in the range, and the language near the positive and negative boundaries of the domain of interest

、

The membership function of the system is in an inclined trapezoid shape and represents the actual systemThe fuzzy language always has the value of

Or

The specific membership function is shown in FIG. 5.

Next, the first opening degree is corrected by the disturbance temperature deviation to obtain a second opening degree.

Optionally, the gas flow compensation coefficient output by the PID controller for controlling the outer ring temperature of the system

The output value of the temperature feedforward fuzzy disturbance rejection controller is basically the output range

In the fundamental field of this disclosure

Is 0.15. At this time, the gas flow compensation coefficient

Is a fuzzy language set of

Its domain of ambiguity

In the range of

And simultaneously selecting the membership function on the fuzzy universe as a triangular membership function. Therefore, disturbance in the baking temperature rise process can be well inhibited.

As one example, a mapping equation in which the gas flow compensation coefficient is mapped to a value domain by a fuzzy domain may be expressed as equation (13) below.

（13）

Wherein,

compensation coefficient for indicating gas flow

And (4) defuzzifying the mapping value obtained on the fuzzy domain.

It is worth to say that the control rule of the temperature feedforward fuzzy disturbance rejection controller is in the form of if

and

then

The control rule adopts a fuzzy reasoning and synthesizing rule. The fuzzy control rule is shown in table 1 below.

TABLE 1

The fuzzy control rule base can determine the total fuzzy relation R, and the fuzzy set on the output linguistic variable domain can be obtained according to the Mamdani reasoning and synthesizing rule, specifically referring to the formula (14).

（14）

Wherein,

compensation coefficient for indicating gas flow

Mapping values obtained by defuzzification over a universe of ambiguity "

"synthetic operation for representing fuzzy relation"

"represents a small operation in the blur estimation.

The output quantity obtained from the above is a fuzzy set

The fuzzy set is subjected to sharpening operation by the gravity center method, and the formula for the sharpening output quantity refers to the formula (15).

（15）

Wherein,

is a fuzzy language value of the gas flow compensation coefficient,

is composed of

Degree of membership.

Further, the second opening degree is calculated by the following equation (16):

（16）

wherein,

it is indicated that the second opening degree is,

which indicates the first opening degree of the liquid crystal,

the gas flow compensation factor is shown.

After determining the corrected second opening degree, determining the gas inlet air quantity based on the second opening degree of the gas regulating valve. Alternatively, the gas intake amount is determined based on the second gas amount with reference to the method flowchart shown in fig. 6, and the steps thereof include S601-S604.

And S601, acquiring the real-time opening degree.

And S602, calculating the real-time opening degree and the second opening degree to obtain the current gas flow deviation.

And S603, determining a target opening degree based on the second opening degree, the current gas flow deviation and the real-time opening degree.

And S604, determining the gas inlet quantity based on the target opening degree.

In the specific implementation, if the current baking stage is in the j-th stage, the real-time opening degree of the gas regulating valve detected by the gas flow detection unit

As a feedback value of the gas flow PID controller, the real-time opening degree of the gas flow PID controller is utilized

Second opening degree

Calculating to obtain the deviation of the gas flow

And rate of change of gas flow deviation

. In particular, reference may be made to equations (17) and (18), respectively.

（17）

（18）

Wherein,

the deviation of the gas flow is shown,

the rate of change of the deviation of the gas flow is represented,

indicating the current gas flow deviation recorded in the control system,

the last gas flow deviation is indicated.

Based on discrete PID control principle, the gas flow deviation is controlled by an inner ring gas flow PID controller

The calculation is performed to obtain the target opening degree, specifically referring to equation (19).

（19）

Wherein,

which indicates the target opening degree of the air conditioner,

the deviation of the gas flow is shown,

the proportionality coefficient of the PID controller of the inner ring gas regulating loop is represented,

the value of the integral coefficient is represented by,

representing the differential coefficient, k representing the control system to

Is the sampling interval of the sampling period.

After the target opening degree is determined, the gas regulating valve is regulated through the gas regulating mechanism, so that the gas inflow is determined, namely the gas inflow supplied by the baking system can be dynamically regulated according to the temperature rise change state detected by the control system.

The gas inlet quantity is determined, and meanwhile, the air inlet quantity also needs to be determined. Referring to the method flowchart shown in fig. 7, the step of determining the air intake amount based on the second gas amount includes S701 and S702.

S701, acquiring a standard air-fuel ratio of the current baking stage.

S702, an air intake quantity is determined based on the standard air-fuel ratio, the second opening degree and the current air flow.

In the disclosure, the standard air-fuel ratio corresponding to the control system can be determined according to the repair or overhaul of the torpedo ladle and the current baking stage.

The torpedo ladle baking temperature rise process involved in the method can be generally divided into a slow temperature rise section and an optimal air-fuel ratio temperature regulation section according to the baking process. The slow temperature rise section refers to the period that the baking temperature in the tank rises from room temperature to the marked temperature value in the section

(this value is generally 300 ℃) and the effect of baking in this stageThe method mainly comprises the steps of gradually removing moisture and gas in refractory bricks and a binder in the tank, and simultaneously avoiding damage to refractory materials of the tank due to rapid evaporation of the moisture and massive overflow of the gas, so that the temperature rise speed of baking is required to be controlled in a lower range. In order to meet the purpose of slow temperature rise in baking, the system gas is generally required to be in an oxygen-rich state in the stage, the actual air-fuel ratio is larger than the theoretical air-fuel ratio, and the heated hot air is mainly used for carrying away the moisture in the refractory material.

In the slow heating stage, the temperature rise control is realized by adjusting the gas flow, and meanwhile, the air-fuel ratio is slowly adjusted through the air-fuel ratio gating unit according to the set segmented temperature threshold value, so that the air-fuel ratio of the system is close to the theoretical air-fuel ratio when the baking temperature in the tank reaches the stage mark temperature value. Wherein, the standard air-fuel ratio of the current roasting stage is determined by the air-fuel ratio gating unit according to the following formula (20).

（20）

Wherein,

indicating the standard air-fuel ratio for the current stage of toasting,

which shows the theoretical air-fuel ratio determined based on the gas intake amount,

the default air-fuel ratio of the control system at the beginning of combustion is 10,

the remainder is taken as 5,

a value indicative of a segment temperature threshold value,

representing the current actual temperature.

After the standard air-fuel ratio of the current roasting stage is determined, the air intake amount is determined according to the method flow chart shown in FIG. 8, and the specific steps include S801-S803.

S801, a third opening degree of the air regulating valve is determined based on the standard air-fuel ratio and the second opening degree.

And S802, calculating the third opening and the current opening of the air regulating valve to obtain a current air flow deviation value.

And S803, determining the air intake quantity based on the standard air-fuel ratio, the current air flow deviation value and the current air flow.

And calculating the second opening according to the standard air-fuel ratio to obtain a third opening of the air regulating valve.

After the baking temperature enters the rapid heating stage, the water content of the refractory material in the tank is greatly reduced, and at the moment, if the system is still burnt in an peroxy state, a large amount of heat can be taken away by air, so that the baking efficiency is reduced. Meanwhile, in the process of quickly heating up the control system, the baking combustion is not in an oxygen deficiency state, the problem that the heat value is lost and the pollution is caused by the black smoke is easily caused is avoided, and therefore the current air-fuel ratio is required to be ensured within a certain range of the theoretical air-fuel ratio after the baking temperature is higher than the stage mark temperature value. Wherein, in order to avoid the oxygen deficiency state in the baking process and the heat loss is not great, the air is required to meet a certain excess rate

，

，

. After that, the third opening degree is calculated by the following equations (21) and (22).

（21）

。（22）

Wherein,

it indicates the third opening degree of the valve,

which indicates the second opening degree of the liquid crystal panel,

indicating the standard air-fuel ratio for the current stage of toasting,

indicating the excess air ratio.

If the current baking stage is in the j-th stage, calculating the current air flow deviation value and the current air flow deviation value change rate through the formulas (23) and (24).

（23）

（24）

Wherein,

a current air flow deviation value is indicated,

it indicates the third opening degree of the liquid crystal,

which indicates the current opening degree of the air conditioner,

indicates the rate of change in the current airflow deviation value,

the previous air flow offset value is indicated.

As one example, the air intake amount is determined according to a method flowchart shown in fig. 9, and specific steps include S901 to S905.

And S901, acquiring the current actual air-fuel ratio.

And S902, calculating the current actual air-fuel ratio and the standard air-fuel ratio to obtain the current air-fuel ratio deviation.

And S903, calculating the current air-fuel ratio deviation and the previous air-fuel ratio deviation to obtain the change rate of the current air-fuel ratio deviation.

And S904, determining a compensation coefficient based on the fuzzy control rule base, the current air-fuel ratio deviation and the current air-fuel ratio deviation change rate.

And S905, determining the air intake quantity based on the compensation coefficient, the current air flow deviation value and the current air flow.

Alternatively, the opening degree of the air adjusting valve is calculated by the following formula (25).

（25）

Wherein,

which indicates the opening degree of the air adjustment valve,

a scaling factor representing the PID controller of the inner loop air conditioning loop,

means product ofThe coefficient of the component is divided into a plurality of coefficients,

representing the differential coefficient, k representing the system to

Is the sampling interval of the sampling period,

indicating the current air flow offset value.

Considering that the air inflow in the combustion process is adjusted only by the inner ring air flow PID controller, the air-fuel ratio value is difficult to ensure in the dynamic baking process of the torpedo tank

Within a desired range, i.e. to ensure an air excess coefficient

. The conventional method is to add double-crossing amplitude limiting control to a gas and air flow controller of a torpedo ladle baking control system so as to meet the requirement of the amplitude limiting of the change of the air-fuel ratio. However, for the case that the temperature rising speed is large or large disturbance occurs, the controller using double-cross amplitude limiting is difficult to meet the tracking speed, and the adjustment process is easy to fluctuate for a long time, so the air-fuel ratio is further dynamically adjusted by the air-fuel ratio fuzzy compensation controller.

Optionally, the current real-time air-fuel ratio is obtained through the real-time gas flow and the real-time air flow detected by a gas flow detection unit and an air flow detection unit included in the control system

Specifically, the calculation can be performed by the following formula (26).

（26）

Wherein,

indicating the current actual air-fuel ratio,

indicates the current opening degree of the air adjustment valve,

and the real-time opening of the gas regulating valve is shown.

Further, the current actual air-fuel ratio is calculated from the standard air-fuel ratio by the following formula (27), and the current air-fuel ratio deviation is obtained.

（27）

Wherein,

indicates the deviation of the current air-fuel ratio,

which indicates the standard air-fuel ratio,

indicating the current actual air-fuel ratio.

The control system can record the current actual air-fuel ratio at each time, the current air-fuel ratio deviation, and the like, and therefore, the current air-fuel ratio deviation change rate can be calculated by the following equation (28).

（28）

Wherein,

indicates the current air-fuel ratio deviation change rate,

indicates the deviation of the current air-fuel ratio,

indicating the last air-fuel ratio deviation.

The control system is also provided with an air-fuel ratio fuzzy compensation controller, and after the current air-fuel ratio deviation and the current air-fuel ratio deviation change rate are obtained, the current air-fuel ratio deviation and the current air-fuel ratio deviation change rate are used as the input of the air-fuel ratio fuzzy compensation controller for adjustment. Wherein, based on the process and operation experience of torpedo tank baking, the universe of input quantity of the air-fuel ratio fuzzy compensation controller is selected as

Fuzzy quantization processing is carried out on the input of the controller, and fuzzy domains of the air-fuel ratio deviation and the deviation change rate are obtained

And, the set of languages of the discourse domain is

. At this time, the mapping expressions of the current air-fuel ratio deviation and the current air-fuel ratio deviation change rate to the fuzzy domain are formula (29) and formula (30), respectively.

（29）

（30）

Wherein,

representThe rate of change of the current air-fuel ratio deviation,

indicates the deviation of the current air-fuel ratio,

a map value representing the current air-fuel ratio deviation over the fuzzy domain,

and a mapped value representing the current air-fuel ratio deviation change rate on the fuzzy domain.

Here, the fuzzy universe

And

the membership function is a triangular membership function and a trapezoidal membership function to avoid the output of the fuzzy compensation controller being zero

And if the system is excessively adjusted nearby, selecting a membership function near the zero of the fuzzy language as a trapezoidal membership function, and selecting triangular membership functions on other language domains.

According to the field debugging experience, determining the output value proportional compensation coefficient of the air-fuel ratio fuzzy compensation controller

Has a domain of discourse of

Wherein

The value is 1. The fuzzy domain of the proportional compensation coefficient is

The language set in the fuzzy domain selects 7 language values as:

。

and, determining an output value proportional compensation coefficient of the air-fuel ratio fuzzy compensation controller

Has a domain of discourse of

At this time

The value is 0.4. The fuzzy domain of the proportional compensation coefficient is

The language set in the fuzzy domain selects 7 language values as follows:

。

optionally, the air-fuel ratio fuzzy compensation controller output value

In the form of if

ER_ and

then

The fuzzy control rule adopts a fuzzy reasoning synthesis rule, and is shown in table 2.

TABLE 2

And, the air-fuel ratio fuzzy compensation controller output value

In the form of if

and

then

The control rule adopts a fuzzy reasoning synthesis rule. The fuzzy control rule is shown in table 3.

TABLE 3

In the present disclosure, the output linguistic variables may be found according to the Mamdani inferential synthesis rules

And

fuzzy sets on the domain of discourse. Output of fuzzy using method of center of gravity

And

performing sharpening processing to obtain the output value of the air-fuel ratio fuzzy compensation controller

And

。

obtaining the output value of the fuzzy compensation controller of the air-fuel ratio

And

the proportion and the differential coefficient related to the air PID controller are compensated in real time according to the dynamic change of the air-fuel ratio in the baking process, and the proportion coefficient and the differential coefficient of the compensated inner ring air PID are respectively determined by the following formulas (31) and (32).

（31）

（32）

Wherein,

a proportional output value representing the air-fuel ratio blur compensation controller,

a differential output value representing the air-fuel ratio blur compensation controller,

represents the proportionality coefficient of the compensated inner loop air PID,

represents the differential coefficient of the compensated inner loop air PID,

representing the differential coefficient of the PID controller of the inner loop air conditioning circuit.

After the inner loop air PID controller of the control system is dynamically adjusted by the air-fuel ratio fuzzy compensator, the air intake quantity is determined by the following formula (33).

（33）

Therefore, the control system can realize quick response to temperature adjustment under the conditions of quick temperature rise and disturbance, and meanwhile, the air-fuel ratio is stabilized within a system expected range.

As an example, table 4 shows segment optimization PID parameters for controlling the baking process of the medium and large segments, and the specific parameters are as follows:

TABLE 4

And S104, conveying the coal gas and the air to the torpedo tank according to the coal gas intake amount and the air intake amount.

After the gas inlet amount and the air inlet amount are determined, gas and air are conveyed to the torpedo tank according to the gas inlet amount and the air inlet amount so as to bake the torpedo tank.

In conclusion, the outer ring of the control system of the embodiment of the disclosure adopts a segmented optimization PID method to design a system temperature rise main controller; according to the change of the actual temperature detection value and the change rate thereof, an intelligent temperature disturbance rejection controller is designed by adopting a fuzzy control and feedforward control method, the output of the intelligent temperature disturbance rejection controller is used as the adjustment input of the main adjustment quantity (gas flow) of the inner ring of the system, and the intelligent temperature disturbance rejection controller can quickly respond to the temperature mutation caused by the fluctuation of gas (gas) components, pressure and the like; the inner ring of the system respectively designs respective PID controllers optimized by sectional parameters for a gas (fuel gas) regulating loop and an air regulating loop according to different temperature rising stages; in order to ensure the full combustion of the fuel gas, an air-fuel ratio gating device is designed according to a specific temperature rise stage, and the input value of an air-fuel regulation loop when the gating device is switched on is determined by the product of the gas input quantity and the air-fuel ratio; in order to ensure that the air-fuel ratio of the system is not severely disturbed in the rapid heating stage, the fuzzy control method is adopted to design the air-fuel ratio dynamic compensation controller, and the proportion and the differential coefficient of the air PID controller are dynamically compensated according to the change information of the air-fuel ratio so as to obtain a good temperature control target and a good control effect.

In the embodiment of the disclosure, feedforward temperature compensation is carried out on the current actual temperature to correct the gas air inflow and the air inflow, further, fuzzy compensation is carried out on the air-fuel ratio, the final gas air inflow and the air inflow are further corrected, so that the gas air inflow and the air inflow are more accurate and matched, when a torpedo tank is baked, the thorough combustion of fuel can be ensured, the fuel utilization rate can be effectively improved, the emission of harmful gas is reduced, the adopted air-fuel ratio fuzzy compensation control technology can limit the air-fuel ratio in the baking combustion process within a theoretical value range, and the fuzzy compensation control technology has a quick response characteristic to quick temperature rise and disturbance, and avoids the problems of energy waste, environmental pollution and the like; and under the dynamic regulation of the PID double closed-loop cascade fuzzy control system, the regulation and control of the baking temperature are accurate, the disturbance resistance is strong, and the baking quality is greatly improved.

Based on the same inventive concept, the second aspect of the present disclosure further provides a control system for torpedo ladle baking, and since the principle of the control system in the present disclosure for solving the problem is similar to the control method described above in the present disclosure, the implementation of the control system may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 10, the control system provided by the embodiment of the present disclosure includes an acquisition module and a processing module, where the acquisition module is configured to acquire a current actual temperature; the processing module is configured to perform feedforward temperature compensation on the current actual temperature to obtain disturbance temperature deviation; determining gas air inflow and air inflow based on the disturbance temperature deviation; and conveying the coal gas and the air to the torpedo tank according to the air inflow of the coal gas and the air inflow of the air. Continuing, referring to fig. 10, the collection module includes a chimney 1, a flue gas adjusting component 2, a waste heat recovery component 3, a moving trolley component 4, a flue gas collecting component 5, a tank cover 6, a temperature thermocouple 7, a "T" type burner 8, a gas stop valve 9, a gas adjusting component 10, a combustion fan 11, an air adjusting component 12, a nitrogen adjusting component 13, a nitrogen stop valve 14 and a processing module 15, which are connected into a whole through pipe sections and bolts. The T-shaped burner 8 is inserted into the torpedo tank body and generates high-temperature gas through combustion to bake the torpedo tank refractory, and the flue gas collecting component 5, the waste heat recovery component 3 and the flue gas adjusting component 2 connect a waste gas interface of the T-shaped burner 8 with the chimney 1; the waste heat recovery component 3 and the air conditioning component 12 connect an air interface of the T-shaped combustor 8 with the combustion fan 11; the gas regulating component 10 connects the gas interface of the T-shaped burner 8 with the gas pipe network, and the nitrogen regulating component 12 connects the nitrogen interface of the T-shaped burner 8 and the gas regulating component 10 with the nitrogen pipe network. The gas regulating component 10, the air regulating component 12 and the nitrogen regulating component 13 are provided with necessary control valves and instruments such as regulating valves, cut-off valves, quick-cut valves, stop valves, pressure transmitters, flow meters, pressure gauges and the like. The processing module is electrically connected with the moving trolley component 4, the air conditioning component 12 and the gas conditioning component 10 so as to respectively control the supply of the combustion air by the air conditioning component, the supply of the gas by the gas conditioning component and the operation of the moving trolley component.

Optionally, the preheated air and gas are conveyed to a T-shaped burner, and the torpedo ladle refractory is heated and baked according to a preset temperature model; then the following processes are executed in sequence: a coal gas conveying process: the gas is conveyed to the gas regulating component 10 through an energy pipe network, the gas flow is regulated by the gas regulating component to meet the temperature rise requirement of a baking curve, and then the gas is conveyed to the T-shaped combustor 8; an air conveying flow: the high-pressure centrifugal fan 11 conveys combustion-supporting air to a combustion-supporting air regulating system, the combustion-supporting air is regulated to proper flow and then conveyed to the waste heat recovery assembly 3, and the preheated high-temperature air is finally conveyed to the T-shaped combustor 8; and (3) ignition process: opening the flue gas adjusting component 2, starting the combustion-supporting fan 11, opening the air adjusting component 12, opening the coal gas adjusting component 10, igniting by adopting a handheld ignition gun, burning flame at two sides of a T-shaped burner, spraying high-temperature flue gas generated by burning to two sides in the middle of a torpedo tank, and carrying out heating and baking operation according to a heating curve set by a model; air-gas mixed combustion process: the combustor adopts a premixing mode and an internal combustion structure, the spraying speed of flame can be improved, the disturbance of high-temperature air flow in the tank is increased, the uniformity of the temperature in the tank is improved, and the air-fuel ratio is adjusted in a staged mode in combustion; the high-temperature flue gas collection system comprises an upper collection cover, a lower movable sealing device and a connecting rod jacking device, wherein the sealing is butt-joint annular soft sealing, a sealing material is a zirconium-containing fiber block, the sealing device is moved to ascend by shaking a hand wheel before the torpedo ladle is baked, the collection cover is attached, and after baking is finished, the movable sealing device descends and separates from the collection cover, so that the sealing performance of flue gas circulation is ensured, and the requirement of a high-temperature use environment is met; the working process of the waste heat recovery system comprises the following steps: the high-temperature flue gas collection device is provided with a high-temperature flue gas inlet, a high-temperature flue gas outlet, a combustion-supporting air inlet and a combustion-supporting air outlet, wherein the high-temperature flue gas inlet is connected with a flue gas collection assembly 5, the flue gas outlet is connected with a chimney 1 through a flue, the combustion-supporting air inlet is connected with a combustion-supporting fan 11 through an air conditioning assembly 12, and the combustion-supporting air outlet is connected with a connecting type combustor 8 through a hot air pipeline; the waste heat recovery system can preheat the hot air to 250-450 ℃, so that the fuel is saved by more than or equal to the energy (compared with the waste heat recovery system not adopted);

furthermore, the control system is also provided with a safety interlocking protection device. When the conditions that the flame of a nozzle of the burner is extinguished, the air pressure is lower than a set value and the pressure in the tank is higher than the set value are detected, the gas alarm is over-limited and the like, the safety interlocking protection device automatically cuts off the gas supply within set time and sends out an alarm prompt.

Here, the processing module of the embodiment of the present disclosure includes a high performance PLC, a network communication module, a frequency converter driving module, a man-machine interface module, etc., and realizes the control of the baking temperature in the tank, the output of the baking temperature lifting model, the adjustment of the gas and air flow, and the safety interlocking function in the baking process; the signal acquisition system comprises various sensors of temperature, pressure, flow and the like, a flame detection unit, a CO detection alarm unit and the like, and is mainly responsible for acquiring and detecting information of temperature, gas flow, air flow, pressure and the like in the baking process; the operation monitoring system comprises a plurality of industrial personal computers serving as an upper computer operation platform, a video monitoring device, a network management distribution unit and a data output printing device, and mainly realizes the functions of remotely controlling the baking process of the torpedo ladle, monitoring the state of the system, safely alarming, storing, recording, baking data, outputting and printing and the like.

The third aspect of the present disclosure also provides a storage medium, which is a computer-readable medium storing a computer program, and when the computer program is executed by a processor, the computer program implements the method provided in any embodiment of the present disclosure, including the following steps:

s11, acquiring the current actual temperature;

s12, performing feedforward temperature compensation on the current actual temperature to obtain disturbance temperature deviation;

s13, determining gas air inflow and air inflow based on the disturbance temperature deviation;

and S14, conveying the coal gas and the air to the torpedo tank according to the coal gas air inflow and the air inflow.

It should be noted that the storage medium of the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any storage medium that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.

The fourth aspect of the present disclosure also provides an electronic device, as shown in fig. 11, the electronic device at least includes a memory 1101 and a processor 1102, the memory 1101 stores a computer program, and the processor 1102 realizes the method provided by any embodiment of the present disclosure when executing the computer program on the memory 1101. Illustratively, the method performed by the electronic device computer program is as follows:

s21, acquiring the current actual temperature;

s22, performing feedforward temperature compensation on the current actual temperature to obtain disturbance temperature deviation;

s23, determining gas air inflow and air inflow based on the disturbance temperature deviation;

and S24, conveying the coal gas and the air to the torpedo tank according to the coal gas intake amount and the air intake amount.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.

Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

The above detailed description of the embodiments of the present disclosure is not limited to these specific embodiments, and those skilled in the art can make various modifications and alterations on the basis of the concept of the present disclosure, and these modifications and alterations should fall within the scope of the present disclosure.

Claims

1. A control method for torpedo ladle baking is characterized by comprising the following steps:

acquiring the current actual temperature;

according to the gas inflow and the air inflow, conveying gas and air to a torpedo tank;

the feedforward temperature compensation is performed on the current actual temperature to obtain a disturbance temperature deviation, and the method comprises the following steps:

taking the difference value between the current temperature deviation and a preset threshold value as the disturbance temperature deviation under the condition that the current temperature deviation is larger than the preset threshold value; the preset threshold is the product of the standard temperature and the overshoot of the current baking stage;

taking the sum of the current temperature deviation and the preset threshold as the disturbance temperature deviation under the condition that the current temperature deviation is smaller than or equal to the preset threshold;

the determining of the gas inlet quantity based on the disturbance temperature deviation comprises the following steps:

acquiring the standard temperature of the current baking stage;

calculating to obtain a first opening degree of the gas regulating valve based on the standard temperature and the current actual temperature, wherein a formula for calculating to obtain the first opening degree of the gas regulating valve is as follows:

e _t ＝t _r -t _now

wherein e is _t Representing the actual deviation temperature deviation, t _r Denotes the standard temperature, t _now Representing the current actual temperature, Q _t Indicating a first opening degree, KP _t (j) Expressing the proportionality coefficient, KI, of the outer loop temperature PID controller _t (j) Representing the integral coefficient, KD _t (j) Denotes the differential coefficient, k denotes the control system by T _sc A sampling interval that is a sampling period;

determining gas air inflow and air inflow based on the second opening degree of the gas regulating valve;

the correcting the first opening degree by using the disturbance temperature deviation to obtain a second opening degree comprises:

acquiring a basic universe of output of the temperature feedforward fuzzy disturbance rejection controller, a universe of ambiguity of the disturbance temperature deviation and a universe of ambiguity of the temperature deviation change rate;

determining a gas flow compensation coefficient based on the maximum value in the fundamental domain, the ambiguity domain of the disturbance temperature deviation and the ambiguity domain of the temperature deviation change rate;

and determining the second opening degree based on the gas flow compensation coefficient and the first opening degree.

2. The control method according to claim 1, wherein the determining the gas intake amount based on the second opening degree of the gas regulating valve includes:

acquiring a real-time opening degree;

and determining the gas inlet quantity based on the target opening degree.

3. The control method according to claim 1, wherein determining an air intake amount based on the second opening degree of the gas regulating valve comprises:

acquiring a standard air-fuel ratio of a current baking stage;

4. The control method according to claim 3, wherein the determining the air intake amount based on the standard air-fuel ratio, the second opening degree, and the current air flow rate includes:

5. The control method according to claim 4, wherein the determining the air intake amount based on the standard air-fuel ratio, the current air flow deviation value, and the current air flow rate includes:

acquiring a current actual air-fuel ratio;

calculating the current air-fuel ratio deviation and the previous air-fuel ratio deviation to obtain the change rate of the current air-fuel ratio deviation;

6. The utility model provides a control system for torpedo ladle toasts which characterized in that includes collection module and processing module:

the acquisition module is configured to acquire a current actual temperature;

the processing module is configured to perform feedforward temperature compensation on the current actual temperature to obtain a disturbance temperature deviation; determining gas air inflow and air inflow based on the disturbance temperature deviation; conveying the coal gas and the air to a torpedo tank according to the coal gas air inflow and the air inflow;

the processing module is specifically configured to:

carrying out feedforward temperature compensation on the current actual temperature to obtain disturbance temperature deviation, wherein the method comprises the following steps:

when confirming the coal gas air input based on the disturbance temperature deviation, include:

acquiring the standard temperature of the current baking stage;

e _t ＝t _r -t _now

wherein e is _t Representing the actual deviation temperature deviation, t _r Denotes the standard temperature, t _now Representing the current actual temperature, Q _t Indicating a first opening degree, KP _t (j) Indicating the proportionality coefficient, KI, of the outer loop temperature PID controller _t (j) Representing the integral coefficient, KD _t (j) Denotes the differential coefficient, k denotes the control system by T _sc A sampling interval that is a sampling period;

the processing module corrects the first opening degree by using the disturbance temperature deviation to obtain a second opening degree, and the method comprises the following steps:

acquiring a basic discourse domain of the output quantity of the temperature feedforward fuzzy disturbance rejection controller, a fuzzy discourse domain of the disturbance temperature deviation and a fuzzy discourse domain of the temperature deviation change rate;

7. A storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:

acquiring the current actual temperature;

conveying the coal gas and the air to a torpedo tank according to the coal gas air inflow and the air inflow;

acquiring the standard temperature of the current baking stage;

e _t ＝t _r -t _now

8. An electronic device, comprising: a processor and a memory, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating over a bus when an electronic device is operating, the machine-readable instructions when executed by the processor performing the steps of:

acquiring the current actual temperature;

the step of determining the gas inlet quantity based on the disturbance temperature deviation comprises the following steps:

acquiring the standard temperature of the current baking stage;

e _t ＝t _r -t _now