CN115993865A - Power supply adjusting method, device, storage medium and image signal generator - Google Patents

Abstract

The application discloses a power supply adjusting method, a device, a storage medium and an image signal generator, which are applied to the technical field of electronic circuits. In this application, a voltage difference between a sampling value and a target value of the power supply output voltage is calculated, and a compensation value is determined based on the voltage difference, the compensation value being smaller than the voltage difference, that is, only a part of the voltage difference is compensated. The power supply regulating method can carry out feedback regulation on the voltage output by the power supply to partially compensate the voltage difference so as to lead the voltage output by the final power supply to reach the target value; and the output voltage inaccuracy caused by voltage compensation can be avoided when the burr noise is sampled. Therefore, the voltage actually output by the power supply can be more accurate.

Description

A power regulation method, device, storage medium and image signal generator

technical field

The present application relates to the technical field of electronic circuits, in particular to a power regulation method, device, storage medium and image signal generator.

Background technique

When the feedback control loop is used in the power supply, the output voltage of the power supply is sampled in real time by the sampling circuit, the sampling result of the output voltage is compared with the set voltage value, and the output voltage is compensated according to the voltage difference between the two. To maintain the output voltage of the power supply at the set voltage value.

In general, there may be glitch noise in the output voltage of the power supply. When the sampling circuit samples the output voltage of the power supply, it may obtain the sampling result of the glitch noise. When the sampling result of the glitch noise is used for compensation, it will As a result, the compensated output voltage is inaccurate, and the glitch noise may be further increased.

Contents of the invention

Based on the above problems, the present application provides a power regulation method, device, storage medium and image signal generator, which can make the actual output voltage of the power supply more accurate.

The embodiment of the application discloses the following technical solutions:

In a first aspect, the present application provides a power regulation method, including:

Sampling the output voltage of the power supply to obtain the sampled value;

determining a voltage difference between the sampled value and a target value of the output voltage;

Determine a compensation value smaller than the voltage difference according to the voltage difference, and determine a feedback voltage output to the power supply according to the compensation value, so as to control the output voltage of the power supply, so as to realize the The power supply performs feedback regulation.

Optionally, the determining the compensation value smaller than the voltage difference according to the voltage difference specifically includes:

A compensation value smaller than the voltage difference is determined according to the voltage difference and a preset calculation relationship.

Optionally, a plurality of different preset voltage difference ranges respectively correspond to a plurality of different preset calculation relationships;

The determining the compensation value smaller than the voltage difference according to the voltage difference and the preset calculation relationship specifically includes:

determining the voltage difference range where the voltage difference is located according to the voltage difference;

determining the corresponding preset calculation relationship according to the voltage difference range;

The compensation value smaller than the voltage difference is determined according to the determined preset calculation relationship and the voltage difference.

Optionally, the preset calculation relationship is a preset ratio calculation relationship.

Optionally, when a plurality of preset calculation relationships corresponding to a plurality of different voltage difference ranges are preset, the preset ratio corresponding to the voltage difference range with a larger voltage difference is greater than the voltage difference The preset ratio corresponding to the voltage difference range with a smaller value.

Optionally, the determining the voltage difference between the sampled value and the target value of the output voltage specifically includes:

Determine the real output voltage of the power supply according to the sampled value and a preset first calibration formula, where the preset first calibration formula is a calibration relationship between the sampled value and the output voltage of the power supply;

determining a real voltage difference according to the real power output voltage and the target value;

The determining the compensation value smaller than the voltage difference according to the voltage difference specifically includes:

A compensation value smaller than the real voltage difference is determined according to the real voltage difference.

Optionally, the determining outputting the feedback voltage to the power supply according to the compensation value specifically includes:

Substituting the compensation value as the output voltage of the power supply into a second preset calibration formula to calculate a control voltage corresponding to the compensation value; the second preset calibration formula is a calibration relationship between the output voltage of the power supply and the control voltage;

The feedback voltage is determined according to the calculated control voltage corresponding to the compensation value, and the feedback voltage is output to the power supply.

Optionally, a plurality of preset calibration formulas corresponding to the output voltage ranges are preset, and the preset calibration formulas include the preset first calibration formula or the preset second calibration formula .

Optionally, the sampling the output voltage of the power supply to obtain a sampled value specifically includes:

According to the parameters of the transmission line of the power supply, it is judged whether the voltage loss of the output voltage of the power supply is greater than a preset threshold, and if so, the output voltage of the power supply is sampled to obtain a sampled value.

In a second aspect, the present application provides a power regulation device, including:

The sampling module samples the output voltage of the power supply to obtain a sampled value;

A control module, configured to determine a voltage difference between the sampled value and the target value of the output voltage; determine a compensation value smaller than the voltage difference according to the voltage difference, and determine according to the compensation value Outputting a feedback voltage to the power supply to control the output voltage of the power supply to implement feedback regulation on the power supply.

In a third aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the power regulation method provided in the first aspect are implemented.

In a fourth aspect, the present application provides an image signal generator, which implements the steps of the power regulation method provided in the first aspect when executed.

Compared with the prior art, the present application has the following beneficial effects:

In this application, the voltage difference between the sampled value of the output voltage of the power supply and the target value is calculated, and the compensation value is determined according to the voltage difference. The compensation value is smaller than the voltage difference, that is, only a part of the voltage difference is compensated. Such a power regulation method can perform feedback adjustment (for example, PID feedback regulation) on the output voltage of the power supply to partially compensate the voltage difference, so that the final output voltage of the power supply can reach the target value; The output voltage will be inaccurate due to voltage compensation. Therefore, the actual output voltage of the power supply can be made more accurate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a flow chart of a power regulation method provided in an embodiment of the present application;

FIG. 2 is another flow chart of a power regulation method provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of output voltage segments of a power regulation method provided in an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a power regulating device provided by an embodiment of the present application.

Detailed ways

In order to make those skilled in the art understand the technical solution of the present application more clearly, the application scenarios of the solution of the present application are first described below.

The inherent defect of the power supply is that when the load current increases, the output voltage will start to drop, and there is a problem with the load regulation rate of the power supply. When the feedback control loop is used in the power supply, the problem of the load regulation rate of the power supply can be solved very well. The output voltage of the power supply is sampled in real time by using the sampling circuit, and the sampling result of the output voltage is compared with the set voltage value. According to The voltage difference between the two compensates the output voltage, regardless of the magnitude of the load current, the feedback control loop can maintain the output voltage at the set voltage value. A commonly used feedback control loop includes a PID control system, a proportional, integral, differential (Proportional, Integrating, Differentiation) control loop, referred to as a PID control loop.

At present, there may be glitch noise in the output voltage of the power supply. When the sampling circuit samples the output voltage of the power supply, it may sample glitch noise. If the sampling result of the glitch noise is used for compensation, it will not only lead to The output voltage is not accurate, and may further increase the glitch noise. For example, if the target value of the output voltage is 5V, the sampling result of the glitch noise is obtained during sampling, and the glitch noise is 4.5. If the sampling result of the glitch noise is compensated, the actual value of the output voltage will be 5.5V.

In order to solve the above technical problems, the present application provides a power regulation method, device, storage medium and image signal generator.

In this application, the voltage difference between the sampled value of the output voltage of the power supply and the target value is calculated, and the compensation value is determined according to the voltage difference, and the compensation value is smaller than the voltage difference, that is, only the compensation value of the voltage difference part. Such a power regulation method can perform feedback regulation on the output voltage of the power supply (for example, PID feedback regulation) to partially compensate for the voltage difference, so that the final output voltage of the power supply can reach the target value; The output voltage is inaccurate due to voltage compensation. Therefore, the actual output voltage of the power supply can be made more accurate.

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

FIG. 1 is a flowchart of a power regulation method provided by an embodiment of the present application. As shown in Figure 1, the method includes:

S101: Sampling the output voltage of the power supply to obtain a sampled value.

Generally, a power supply circuit has a target output voltage, and the power supply voltage is output at the target value of the output voltage. During the transmission process, due to the influence of various external factors, the magnitude of the output voltage will change. In the setting sampling section of the power supply circuit, the sampling module is used to sample the output voltage of the power supply at this time to obtain the sampled value of the output voltage of the power supply.

S102: Determine the voltage difference between the sampled value and the target value of the output voltage of the power supply.

The controller obtains the voltage difference between the sampled value of the output voltage of the power supply and the target value of the output voltage of the power supply obtained by calculating S101 , that is, the voltage difference.

S103: Determine a compensation value smaller than the voltage difference according to the voltage difference, and determine a feedback voltage output to the power supply according to the compensation value, so as to control the output voltage of the power supply to implement feedback regulation on the power supply.

In order to solve the sampling result of glitch noise when sampling the output voltage, the compensation of the power supply voltage is inaccurate. Therefore, when compensating the voltage difference, only a part of the voltage difference is compensated, that is, the compensation value of the output voltage is smaller than the voltage difference.

In this embodiment, there is a preset calculation relationship between the compensation value and the voltage difference, and in this case, the compensation value is determined according to the voltage difference.

Specifically, the compensation value may be determined according to the voltage difference and a preset calculation relationship. The compensation value can be calculated quickly and accurately by adopting the preset calculation relationship. Of course, in practical applications, it is also possible to use a data set instead of setting a preset calculation relationship.

Further, the preset calculation relationship may be a preset ratio calculation relationship.

For example, the preset ratio calculation relationship may be a linear ratio calculation relationship, such as in the form of y=kx. Set the proportional calculation coefficient k in advance, where k is less than 1, substitute the calculated voltage difference into x of the preset proportional calculation relationship, and calculate the compensation value y of the output voltage according to the preset calculation coefficient k, so that for The voltage difference is only partially compensated. Of course, in practical applications, the preset proportional calculation relationship may also be a nonlinear proportional calculation relationship, as long as the calculated compensation value y can be guaranteed to be smaller than the voltage difference x.

Preferably, a plurality of different voltage difference ranges can be preset, and the multiple voltage difference ranges can be divided equally or unequally. Multiple different voltage difference ranges correspond to different preset calculation relationships, for example, P different voltage difference ranges correspond to P different preset calculation relationships one by one; another example, Q different voltage difference ranges correspond to P Different preset calculation relationships, wherein Q is greater than P, and there are multiple preset calculation relationships with different voltage difference ranges are the same. In this case, the voltage difference range where the voltage difference is located is determined according to the voltage difference, the corresponding preset calculation relationship is determined according to the voltage difference range, and the voltage difference is substituted into the determined preset calculation relationship, A compensation value (that is, a partial voltage difference) is obtained. This method belongs to segmented partial compensation, which can flexibly set the corresponding partial compensation ratio and other parameters for different voltage difference ranges to further improve the stability of the output voltage of the power supply.

Further preferably, when multiple preset calculation relationships corresponding to multiple different voltage difference ranges are preset, the preset ratio corresponding to the voltage difference range with a larger voltage difference is greater than that corresponding to the voltage difference range with a smaller voltage difference Default scale.

For example, if the voltage difference is 8, and the calculation coefficient k of the voltage difference range where the voltage difference is 8 is set to 1/2, the voltage difference will only be compensated for 1/2 of the value, that is to say, the compensation The value is 4. Wherein, if the voltage difference is larger, the corresponding preset value of k is also adjusted to be larger. If the voltage difference is 4, the calculation coefficient k of the voltage difference range where the voltage difference is 4 is 1/4, Then the voltage difference is only compensated for a quarter, that is to say, the compensation value is 1V. In this way, the compensation ratio can be more when the voltage difference is large, and the compensation ratio can be smaller when the voltage difference is small, so that the voltage can be stabilized quickly.

It should be noted that after the compensation value of the output voltage is determined, it is converted into the corresponding code value and output to the DAC module. The DAC module then converts the compensation value of the output voltage into an analog value, and feeds back the analog value to the feedback of the power supply. end, so that the output voltage of the power supply is compensated and then output.

In this application, the voltage difference between the sampled value of the output voltage of the power supply and the target value is calculated, and the compensation value is determined according to the voltage difference, and the compensation value is smaller than the voltage difference, that is, only the compensation value of the voltage difference part. Such a power regulation method can perform feedback adjustment on the output voltage of the power supply to partially compensate for the voltage difference, so that the final output voltage of the power supply can reach the target value; The voltage is not accurate. Therefore, the actual output voltage of the power supply can be made more accurate.

FIG. 2 is another flow chart of a power regulation method provided by an embodiment of the present application. As shown in Figure 2, the method includes:

S201: Sampling the output voltage of the power supply to obtain a sampled value.

In the setting sampling section of the power supply circuit, the sampling module is used to sample the output voltage of the power supply at this time to obtain the sampled value of the output voltage of the power supply.

S202: Determine the real output voltage of the power supply according to the sampled value and a preset first calibration formula, wherein the preset first calibration formula is a calibration relationship between the sampled value and the output voltage of the power supply.

In the above step S102, due to the influence of uncertain factors in the circuit, the calibration can be performed by presetting the first calibration formula, so that the feedback adjustment result of the subsequent final output can be more accurate.

Preferably, in this embodiment, multiple preset first calibration formulas corresponding to multiple ranges of the output voltage are preset. In this case, step S202 further specifically includes:

S2021. Determine an output voltage range corresponding to the sampled value according to the sampled value.

S2022. Determine a corresponding preset first calibration formula according to the determined range of the output voltage;

S2023. Determine the real output voltage of the power supply according to the sampled value and the determined preset first calibration formula.

It can be understood that the total range of the output voltage of the power supply is divided into multiple ranges, and a corresponding preset first calibration formula is set for each range. For subsequent use, after obtaining the sampled value, the range of the output voltage corresponding to the output voltage to be obtained this time can be found according to the pre-divided range of the output voltage and the sampled value. Wherein, each output voltage range corresponds to a different preset first calibration formula.

By way of example, the total range of electrical output voltage is divided into 5 ranges (which may be referred to as stages in the following). When the maximum output voltage of the current power supply is 24V, the 24V is divided into five stages, as shown in FIG. 3 . The preset first calibration formulas corresponding to the ranges of each output voltage need to be simulated respectively.

In this embodiment, since the first calibration formula is preset as the calibration relationship between the sampled value and the output voltage of the power supply, the error caused by the front-end circuit (eg, the sampling circuit and the ADC circuit) on the feedback control loop is mainly calibrated.

The parameters of each preset first calibration formula can be determined through calibration experiments, and fixedly written in the controller.

How to determine the parameters of each preset first calibration formula through calibration experiments will be described in detail below. Specifically, the preset first calibration formula may be in the form of y ₁ =k _1n x ₁ +b _1n , and each divided stage has a preset first calibration formula, where n is the number of stages in the output voltage range. According to the stages of the pre-divided output voltage range, in each stage, the calibration controller controls the power supply to output two voltages within the voltage range. For each voltage, the voltage sampled by the sampling module and the voltage measured by the voltmeter on the power transmission line are established to establish the preset first calibration formula V _1m =k _1n v _1m +b _1n , which can be calculated by two formulas The parameters k _1n and b _1n are determined to preset the parameters of the first calibration formula in this stage. Among them, m indicates the number of voltages output by the calibration controller, and n indicates the number of stages in the output voltage range.

For example, in the first stage, firstly, the power supply outputs the first voltage to obtain the sampling voltage V ₁₁ , and use a voltmeter to measure the voltage V ₁₁ on the power transmission line before the sampling module. The preset first calibration formula between the voltage measured by the voltmeter and the sampled voltage is V ₁₁ =k ₁₁ v ₁₁ +b ₁₁ . If the output voltage range is divided into five stages, the value range of m is between 1-10 (2 for each calculation, and the maximum value of m is 10 for 5 ranges), and the value range of n is between Between 1-5.

Also in the first stage, similarly, the power supply outputs the second voltage to obtain the sampling voltage V ₁₂ , and use a voltmeter to measure the voltage V ₁₂ on the power transmission line before the sampling module. The mapping relationship between the voltage measured by the voltmeter and the sampling voltage is V ₁₂ =k ₁₁ v ₁₂ +b ₁₁ .

According to the preset first calibration formulas corresponding to the two output voltages, k ₁₁ and b ₁₁ can be calculated to determine the parameters of the preset first calibration formula in the first stage. According to the above method, the parameters of the preset first calibration formula corresponding to the remaining stages are calculated. Finally, the preset first calibration formulas corresponding to all stages can be obtained.

After the calibration parameters corresponding to the range of the output voltage corresponding to the preset first calibration formula are obtained, the preset first calibration formula is determined through a calibration experiment.

S203: Determine the real voltage difference according to the real power output voltage and the target value.

S204: Determine a compensation value smaller than the real voltage difference according to the real voltage difference.

In order to solve the burr noise when sampling the output voltage, the compensation of the power supply voltage is inaccurate. Therefore, when compensating the voltage difference, only part of the real voltage difference is compensated, and finally the compensation value of the output voltage is smaller than the real voltage difference. Preferably, there is a preset calculation relationship between the compensation value and the real voltage difference, and according to the preset calculation relationship, the compensation value of the output voltage can be obtained, and the specific method is referred to above.

S205: Determine the feedback voltage output to the power supply according to the compensation value.

Specifically include:

S2051, substituting the compensation value as the output voltage of the power supply into a preset second calibration formula to calculate a control voltage corresponding to the compensation value; the preset second calibration formula is a calibration relationship between the output voltage of the power supply and the control voltage;

S2052. Determine the feedback voltage according to the calculated control voltage corresponding to the compensation value, and output the feedback voltage to the power supply.

It can be understood that since the compensation value is △, the control voltage corresponding to the compensation value is the control voltage △, and according to the properties of the selected power supply, in step 2052, it is necessary to determine according to the control voltage △ and the original control voltage Of course, in practical applications, if the property of the power supply is based on the control voltage △ for feedback regulation, then the calculated control voltage △ is directly used as the feedback voltage.

In this embodiment, preferably, a plurality of preset second calibration formulas with a one-to-one correspondence between a plurality of output voltage ranges are preset, and the second calibration formula is the output voltage value of the power supply and the control voltage for controlling feedback regulation The calibration relationship of , mainly calibrates the error caused by the back-end circuit (for example, DAC circuit) on the feedback control loop.

In this case, step S2051 also includes:

S20511. Determine an output voltage range corresponding to the sampled value according to the sampled value.

S20512. Determine a corresponding preset second calibration formula according to the determined range of the output voltage;

S20513. Substitute the compensation value into the determined second preset calibration formula as the output voltage of the power supply, and calculate a control voltage corresponding to the compensation value.

It can be understood that the total range of the output voltage of the power supply is divided into multiple ranges, and a corresponding preset second calibration formula is set for each range. For subsequent use, after obtaining the sampled value, the range of the output voltage corresponding to the output voltage to be obtained this time can be found according to the pre-divided range of the output voltage and the sampled value. Wherein, each output voltage range corresponds to a different preset second calibration formula.

The parameters of each preset second calibration formula can be determined through calibration experiments, and are fixedly written in the controller.

Specifically, the preset second calibration formula may be in the form of y ₂ =k _2n x ₂ +b _2n , and each stage has a corresponding preset second calibration formula, where n is the number of stages in the pressure difference range. The stages divided by the preset second calibration formula are the same as the stages divided by the preset first calibration formula. According to the stage of the pre-divided range of the output voltage, in each stage, the calibration controller is made to output two control voltages within the voltage range. For each control voltage, the preset second calibration formula V _2m =k _2n v _2m +b _2n is respectively established by calibrating the control voltage customized by the controller and the voltage measured by the voltmeter on the power transmission line, through which 2 The parameters k _2n and b _2n are calculated by the first formula, which are the parameters of the second calibration formula in this stage. Among them, m indicates the number of control voltages output by the calibration controller, and n indicates the number of stages in the output voltage range.

For example, in the first stage, first define a code value corresponding to a control voltage value within the power supply voltage range, calibrate the control voltage v ₂₁ corresponding to the controller output code value, and use a voltmeter on the power transmission line before the sampling module , measure and obtain the voltage V ₂₁ measured by the voltmeter. The preset second calibration formula between the voltmeter measurement voltage and the control voltage is V ₂₁ =k ₂₁ v ₂₁ +b ₂₁ .

Also in the same stage, the power supply outputs the second voltage similarly, and the calibration controller outputs the control voltage v ₂₂ corresponding to the code value of the second control voltage value. Use a voltmeter on the power transmission line before the sampling module to measure and obtain A voltmeter measures voltage V ₂₂ . The preset second calibration formula between the voltage measured by the voltmeter and the sampled voltage is V ₂₂ =k ₂₁ v ₂₂ +b ₂₁ .

According to the preset second calibration formula of the two voltages, k ₂₁ and b ₂₁ are calculated. Therefore, the parameters of the corresponding preset second calibration formula in the first stage are obtained. According to the above method, the parameters of the second preset calibration formula corresponding to the remaining stages are calculated. The preset second calibration formulas corresponding to all stages can be obtained.

After the calibration parameters corresponding to the range of the output voltage corresponding to the preset second calibration formula are obtained, the preset second calibration formula is determined through a calibration experiment.

Finally, the determined feedback voltage is converted into a corresponding code value, and output to the DAC module, and the DAC module then feeds back the feedback voltage of the output voltage to the feedback terminal of the power supply, so that the power supply outputs according to the feedback voltage.

Further, for the feedback adjustment of the power supply, it is also possible to use a computer that can directly issue control commands, directly input the parameters of the power supply and the power transmission line, and automatically judge whether the voltage loss is greater than the preset threshold according to the parameters of the power transmission line, and if so, turn on the feedback adjustment ; If not, the supply voltage is not sampled.

Specifically, according to the parameters of the transmission line of the power supply, it is judged whether the voltage loss of the output voltage of the power supply is greater than a preset threshold, and if so, the output voltage of the power supply is sampled to obtain a sampled value. That is, whether to perform feedback adjustment is automatically determined according to the parameters of the transmission line, which improves flexibility.

Fig. 4 is a schematic structural diagram of a power regulating device provided by an embodiment of the present application. As shown in Figure 4, the device includes:

The sampling module 410 is configured to sample the power supply voltage output by the power supply module, and acquire the sampling value in the current circuit.

The control module 420 is used to determine a compensation value smaller than the voltage difference according to the voltage difference, and determine a feedback voltage output to the power supply according to the compensation value, so as to control the output voltage of the power supply and implement feedback regulation on the power supply.

Preferably, the control module 420 is specifically configured to determine a compensation value smaller than the voltage difference according to the voltage difference and a preset calculation relationship.

Further preferably, a plurality of different preset voltage difference ranges correspond to a plurality of different preset calculation relationships respectively. In this case, the control module 420 is specifically configured to determine the voltage difference range where the voltage difference is located according to the voltage difference; according to The corresponding preset calculation relationship is determined by the range of the voltage difference; according to the determined preset calculation relationship and the voltage difference, a compensation value smaller than the voltage difference is determined. That is to say: the preset calculation relationship is determined according to a plurality of preset different voltage difference ranges. The compensation value is obtained according to the preset calculation relationship corresponding to the voltage difference range and the voltage difference.

Also preferably, the preset calculation relationship is a preset ratio calculation relationship.

Also preferably, when a plurality of preset calculation relationships corresponding to a plurality of different voltage difference ranges are preset, the preset ratio corresponding to a voltage difference range with a larger voltage difference is greater than that corresponding to a voltage difference range with a smaller voltage difference default ratio of

Preferably, the control module 420 is specifically configured to determine the real power supply output voltage according to the sampled value and the preset first calibration formula; wherein the preset first calibration formula is the calibration relationship between the sampled value and the power supply output voltage; according to the real power supply outputting the voltage and the target value, and determining the real voltage difference; determining a compensation value smaller than the voltage difference according to the voltage difference, specifically including: determining a compensation value smaller than the real voltage difference according to the real voltage difference .

Preferably, the control module 420 is specifically configured to substitute the compensation value as the output voltage of the power supply into the preset second calibration formula to calculate the control voltage corresponding to the compensation value; the preset second calibration formula is the output voltage of the power supply and the control voltage Calibration relationship; determine the feedback voltage according to the calculated control voltage corresponding to the compensation value, and output the feedback voltage to the power supply.

Preferably, a plurality of preset calibration formulas corresponding to a plurality of output voltage ranges are preset, and the preset calibration formulas include a preset first calibration formula or a preset second calibration formula.

Preferably, the sampling module 410 is specifically configured to judge whether the voltage loss of the output voltage of the power supply is greater than a preset threshold according to the parameters of the transmission line of the power supply, and if so, sample the output voltage of the power supply to obtain a sample value.

The embodiment of the present application also provides a corresponding device and a computer storage medium, which are used to implement the solution provided in the embodiment of the present application.

Wherein, the device includes a memory and a processor, the memory is used to store instructions or codes, and the processor is used to execute the instructions or codes, so that the device executes the method in any embodiment of the present application.

Codes are stored in the computer storage medium, and when the codes are run, the device running the codes implements the method in any embodiment of the present application.

The embodiment of the present application also provides a corresponding device and an image signal generator, which are used to implement the solution provided in the embodiment of the present application.

The "first" and "second" in the names of "first" and "second" (if they exist) mentioned in the embodiment of the present application are only used for name identification, and do not represent the first, second.

It should be noted that each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. place. In particular, for the embodiments of the device, storage medium and image signal generator, since they are basically similar to the method embodiments, the description is relatively simple. For relevant parts, please refer to the part of the description of the method embodiments. The above-described embodiments of the device, storage medium, and image signal generator are only illustrative, and the units described as separate components may or may not be physically separated, and the components indicated as units may or may not be A physical unit can be located in one place, or it can be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or Replacement should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (12)

1. A power regulation method, characterized in that, comprising: Sampling the output voltage of the power supply to obtain the sampling value; determining a voltage difference between the sampled value and a target value of the output voltage; Determine a compensation value smaller than the voltage difference according to the voltage difference, and determine a feedback voltage output to the power supply according to the compensation value, so as to control the output voltage of the power supply, so as to realize the The power supply performs feedback regulation. 2. The power regulation method according to claim 1, wherein said determining a compensation value smaller than said voltage difference according to said voltage difference specifically comprises: A compensation value smaller than the voltage difference is determined according to the voltage difference and a preset calculation relationship. 3. The power regulation method according to claim 2, wherein a plurality of different preset voltage difference ranges correspond to a plurality of different preset calculation relationships; The determining the compensation value smaller than the voltage difference according to the voltage difference and the preset calculation relationship specifically includes: determining the voltage difference range where the voltage difference is located according to the voltage difference; determining the corresponding preset calculation relationship according to the voltage difference range; The compensation value smaller than the voltage difference is determined according to the determined preset calculation relationship and the voltage difference. 4. The power regulation method according to claim 2 or 3, wherein the preset calculation relationship is a preset ratio calculation relationship. 5. The power regulation method according to claim 4, wherein when a plurality of preset calculation relationships corresponding to a plurality of different voltage difference ranges are preset, the voltage with the larger voltage difference The preset ratio corresponding to the difference range is greater than the preset ratio corresponding to the voltage difference range with the smaller voltage difference. 6. The method for power regulation according to claim 1, wherein the determining the voltage difference between the sampled value and the target value of the output voltage comprises: Determine the real output voltage of the power supply according to the sampled value and a preset first calibration formula, where the preset first calibration formula is a calibration relationship between the sampled value and the output voltage of the power supply; determining a real voltage difference according to the real power output voltage and the target value; The determining the compensation value smaller than the voltage difference according to the voltage difference specifically includes: A compensation value smaller than the real voltage difference is determined according to the real voltage difference. 7. The power supply adjustment method according to claim 1, wherein the determining the output feedback voltage to the power supply according to the compensation value specifically comprises: Substituting the compensation value as the output voltage of the power supply into a second preset calibration formula to calculate a control voltage corresponding to the compensation value; the second preset calibration formula is a calibration relationship between the output voltage of the power supply and the control voltage; The feedback voltage is determined according to the calculated control voltage corresponding to the compensation value, and the feedback voltage is output to the power supply. 8. The power regulation method according to claim 6 or 7, characterized in that a plurality of preset calibration formulas corresponding to the ranges of the output voltages are preset, and the preset calibration formulas include the The preset first calibration formula or the preset second calibration formula. 9. The power regulation method according to claim 1, wherein said sampling the output voltage of said power supply to obtain a sampled value comprises: According to the parameters of the transmission line of the power supply, it is judged whether the voltage loss of the output voltage of the power supply is greater than a preset threshold, and if so, the output voltage of the power supply is sampled to obtain a sampled value. 10. A power regulating device, characterized in that it comprises: The sampling module samples the output voltage of the power supply to obtain a sampled value; A control module, configured to determine a voltage difference between the sampled value and the target value of the output voltage; determine a compensation value smaller than the voltage difference according to the voltage difference, and determine according to the compensation value Outputting a feedback voltage to the power supply to control the output voltage of the power supply to implement feedback regulation on the power supply. 11. A computer-readable storage medium, on which a computer program is stored, wherein, when the program is executed by a processor, the power regulation method according to any one of claims 1-9 is realized. 12. An image signal generator, characterized in that the image signal generator comprises at least one power regulation method according to any one of claims 1-9.

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