CN115257693A - Starting assembly abnormal sound control method based on motor control for dual-motor hybrid vehicle - Google Patents

Abstract

The invention discloses a method for controlling abnormal noise of a starting assembly of a dual-motor hybrid vehicle based on motor control, and belongs to the field of vehicle power control. S100, the MCU identifies the speed fluctuation of the generator; S200, after the MCU completes the identification of the speed characteristics of the generator, it optimizes the torque model according to the speed characteristics; S300, obtains the torque model, and the MCU suppresses the assembly speed through the torque model fluctuation. The invention reduces vehicle manufacturing cost and vehicle weight, has greater advantages in general adaptability, can be achieved based on current hybrid vehicle motor control accuracy, has outstanding adaptability, and has better survivability and promotion value.

Description

Abnormal noise control of starter assembly based on motor control for a dual-motor hybrid vehicle method

technical field

The invention relates to a method for controlling abnormal noise of a starting assembly of a dual-motor hybrid vehicle based on motor control, and belongs to the field of vehicle power control.

Background technique

For the dual-motor hybrid configuration, the engine starter structure is canceled due to the structural design of the whole vehicle, and the engine is directly driven by the generator to start. The difference between the inertia of the generator and the inertia of the engine crankshaft leads to the existence of a shock absorber to reduce the impact under the excitation of the engine cylinder pressure and the structure itself when the generator drives the engine to start, and the speed fluctuation between the generator and the engine causes the transmission Gears and splines are reversed and knocked, producing abnormal noise, which seriously affects the driving experience of customers.

Due to the fixed hardware structure (the inertia of the two is difficult to modify, and the existence of buffer and shock absorbers is inevitable), the engine control strategy is relatively rough, and the accuracy and quick response performance are insufficient. Active control is used to suppress the speed fluctuations generated by the generator and engine during the starting process, so as to solve the problem of abnormal starting noise of the dual-motor hybrid configuration.

The main solution to this problem is achieved by modifying the hardware. Based on the development direction of hybrid vehicles in the future, the improvement of engine efficiency will inevitably lead to the increase of engine cylinder pressure and other factors that stimulate the abnormal noise of the engine. The influence of computer problems is more serious, and to make up for the incentive factors, more modifications to the hardware structure are required to make up for it.

Contents of the invention

The invention proposes a method for controlling the abnormal sound of the starting assembly of a dual-motor hybrid vehicle based on motor control, so as to solve the problems existing in the prior art.

A two-motor hybrid system, the two-motor hybrid system includes an engine, a generator, a torsional shock absorber, a reduction gear mechanism, a clutch, a driving motor and a differential, and the engine communicates with the generator through the torsional shock absorber and the reduction gear mechanism Transmission connection, reduction gear mechanism, clutch, drive motor and differential transmission connection in sequence.

A method for controlling abnormal noise of a starter assembly of a dual-motor hybrid vehicle based on motor control. Based on the above-mentioned dual-motor hybrid system, the method for controlling abnormal noise of a starter assembly of a dual-motor hybrid vehicle based on motor control includes the following steps:

S100, the MCU identifies the characteristics of the rotational speed signal of the generator;

S200. After the MCU completes the recognition of the characteristics of the rotational speed signal of the generator, optimize the torque model according to the characteristics of the signal;

S300. A torque model is obtained, and the MCU uses the torque model to suppress the fluctuation of the rotational speed of the assembly.

Further, in S100, the following steps are included:

S110. When the vehicle is started at a fixed position or at a low vehicle speed, the generator is used as a starter to drive the engine to start;

S120, the output torque of the generator first increases and then decreases, and the generator outputs negative torque after the engine is ignited, and the generator is driven by the engine to generate electricity;

S130. In the generator torque reduction stage, the MCU identifies the generator speed data, and identifies and optimizes the generator speed data;

S140. Process the optimized generator speed data to identify generator speed characteristic signals.

Further, in S200, the following steps are included:

S210, performing smooth liner processing on the generator speed characteristic signal;

S220. Perform modulation processing according to the processed result as the speed calculation value;

S230. Adjust the time delay caused by the MCU calculation for the speed calculation value, and use it as the input parameter speed to toque data for the generator torque model control;

S240. Under the existing MCU torque model structure, add the parameter speed to toque data to the output value of the original model, and use the calculated result as a generator control parameter to control the generator.

Further, in S230, the method for adjusting the time delay caused by MCU calculation is:

S231. Analyze the speed and time characteristics of the Speed calculation value, and calculate the real-time period t0;

S232. Analyze and obtain the time t1 taken by the theoretical MCU to process the generator speed and input it into the original torque model;

S233, t0/2-t1 is the time to be adjusted, delay the time to be adjusted when the Speed calculation value is input, and then execute S240.

A motor control-based abnormal noise control system for a starter assembly of a dual-motor hybrid vehicle, which is applied to the above-mentioned method for controlling the abnormal noise of a starter assembly for a dual-motor hybrid vehicle based on motor control. The starter assembly abnormal noise control system includes The speed feature recognition module, the torque model optimization module and the assembly speed fluctuation suppression module, the speed feature recognition module, the torque model optimization module and the assembly speed fluctuation suppression module are connected in sequence, wherein,

The speed fluctuation identification module is used for the MCU to identify the speed characteristics of the generator;

The torque model optimization module is used to optimize the torque model according to the speed characteristics after the MCU completes the identification of the speed characteristics of the generator;

The torque model is obtained, which is used by the MCU to suppress the fluctuation of the assembly speed through the torque model.

Further, the rotational speed feature recognition module includes an engine driving unit, a generator driving unit, a generator speed data identification and optimization unit, and a generator speed characteristic signal recognition unit, wherein,

The engine driving unit is used for the generator to drive the engine as a starter when the vehicle is started at a fixed position or at a low speed;

The generator driving unit is used for the generator to output negative torque after the engine is ignited, and the generator is driven by the engine to generate electricity;

The generator speed data identification and optimization unit is used for the MCU to identify the generator speed data during the generator torque reduction stage, and to identify and optimize the generator speed data;

The generator speed characteristic signal identification unit is used to perform characteristic processing on the optimized generator speed data and identify the generator speed characteristic signal.

Further, the torque model optimization module includes a generator speed characteristic signal processing unit, a speedcalculation value generation unit, a speed to toque data generation unit and a generator control parameter generation unit, a generator speed characteristic signal processing unit, a speed calculation value generation unit, a speed The toquedata generating unit and the generator control parameter generating unit are connected sequentially, wherein,

The generator speed characteristic signal processing unit is used to perform smooth liner processing on the generator speed characteristic signal;

The speed calculation value generation unit is used to perform modulation processing according to the result processed by the generator speed characteristic signal processing unit as the speed calculation value;

The speed to toque data generation unit is used to adjust the time delay caused by the MCU calculation for the speed calculation value, as the input parameter speed to toquedata for the generator torque model control;

The generator control parameter generation unit is used to add the parameter speed totoque data and the output value of the original model under the existing MCU torque model structure, and the calculation result is used as the generator control parameter to control the generator.

A storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned method for controlling abnormal noise of a starter assembly of a dual-motor hybrid vehicle based on motor control is realized.

A vehicle, comprising: a memory, a processor, and a computer program stored in the memory and operable on the processor, and the processor executes the program, so as to realize the above-mentioned starter assembly based on motor control of a dual-motor hybrid vehicle. sound control method.

Beneficial effects of the present invention: the present invention proposes a method for controlling the abnormal sound of the starter assembly of a dual-motor hybrid vehicle based on motor control. Compared with the modification of the hardware structure in the prior art, this solution not only reduces the manufacturing cost of the whole vehicle and Vehicle weight has a greater advantage in general adaptability. Based on the current hybrid vehicle motor control accuracy can be achieved, it has outstanding adaptability, better survivability, and promotion value.

Description of drawings

Fig. 1 is the structural representation of a kind of dual-motor hybrid power system of the present invention;

FIG. 2 is a flow chart of a method for controlling abnormal noise of a starter assembly based on motor control for a dual-motor hybrid vehicle according to the present invention.

Wherein, 1 is an engine, 2 is a generator, 3 is a torsional shock absorber, 4 is a reduction gear mechanism, 5 is a clutch, 6 is a driving motor, and 7 is a differential.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment 1, with reference to Fig. 1-shown in Fig. 2, the present invention proposes a kind of dual-motor hybrid power system, dual-motor hybrid power system comprises engine 1, generator 2, torsional shock absorber 3, reduction gear mechanism 4, clutch 5. Drive motor 6 and differential 7. Engine 1 is connected to generator 2 through torsional shock absorber 3 and reduction gear mechanism 4. Reduction gear mechanism 4, clutch 5, drive motor 6 and differential 7 are sequentially connected by transmission. .

Embodiment 2. A method for controlling the abnormal sound of the starting assembly of a dual-motor hybrid vehicle based on motor control, based on the above-mentioned dual-motor hybrid system, a method for controlling the abnormal noise of the starting assembly of a dual-motor hybrid vehicle based on motor control Include the following steps:

S100, the MCU identifies the rotational speed characteristics of the generator;

S200. After the MCU completes the identification of the rotational speed characteristics of the generator, optimize the torque model against the characteristic rotational speed;

S300. A torque model is obtained, and the MCU uses the torque model to suppress the fluctuation of the rotational speed of the assembly.

Embodiment 3. Further, in S100, the following steps are included:

S110. When the vehicle is started at a fixed position or at a low vehicle speed, the generator is used as a starter to drive the engine to start;

S120, the output torque of the generator first increases and then decreases, and the generator outputs negative torque after the engine is ignited, and the generator is driven by the engine to generate electricity;

S130. In the generator torque reduction stage, the MCU identifies the generator speed data, and identifies and optimizes the generator speed data;

S140. Perform feature processing on the optimized generator speed data to identify generator speed characteristic signals.

Embodiment 4. Further, in S200, the following steps are included:

S210, performing smooth liner processing on the generator speed characteristic signal;

S220. Perform modulation processing according to the processed result as the speed calculation value;

S230. Adjust the time delay caused by the MCU calculation for the speed calculation value, and use it as the input parameter speed to toque data for the generator torque model control;

S240. Under the existing MCU torque model structure, add the parameter speed to toque data to the output value of the original model, and use the calculated result as a generator control parameter to control the generator.

Embodiment 5. Further, in S230, the method for adjusting the time delay caused by MCU calculation is:

S231. Perform time characteristic analysis on the Speed calculation value, and calculate the real-time period t0;

S232. Analyze and obtain the time t1 taken by the theoretical MCU to process the generator speed and input it into the original torque model;

S233, t0/2-t1 is the adjustment time. When inputting the Speed calculation value, delay the adjustment time, and then execute S240. The final torque model can suppress the fluctuation of the assembly speed.

Embodiment 6. A motor control-based abnormal noise control system for a starter assembly of a dual-motor hybrid vehicle is applied to the above-mentioned method for controlling the abnormal noise of a starter assembly based on motor control for a dual-motor hybrid vehicle. The noise control system includes a speed fluctuation identification module, a torque model optimization module, and an assembly speed fluctuation suppression module. The speed fluctuation identification module, the torque model optimization module, and the assembly speed fluctuation suppression module are connected in sequence.

The speed fluctuation identification module is used for the MCU to identify the speed characteristics of the generator;

The torque model optimization module is used to optimize the torque model against the characteristic speed after the MCU completes the identification of the speed characteristics of the generator;

The torque model is obtained, which is used by the MCU to suppress the fluctuation of the assembly speed through the torque model.

Embodiment 7. Further, the speed fluctuation identification module includes an engine driving unit, a generator driving unit, a generator speed data identification and optimization unit, and a generator speed characteristic signal identification unit, wherein,

The engine driving unit is used for the generator to drive the engine as a starter when the vehicle is started at a fixed position or at a low speed;

The generator driving unit is used for the generator to output negative torque after the engine is ignited, and the generator is driven by the engine to generate electricity;

The generator speed data identification and optimization unit is used for the MCU to identify the generator speed data during the generator torque reduction stage, and to identify and optimize the generator speed data;

The generator speed characteristic signal identification unit is used to perform characteristic processing on the optimized generator speed data and identify the generator speed characteristic signal.

Embodiment 8. Further, the torque model optimization module includes a generator speed characteristic signal processing unit, a speed calculation value generation unit, a speed to toque data generation unit and a generator control parameter generation unit, a generator speed characteristic signal processing unit, and a speed calculation The value generation unit, the speed totoque data generation unit and the generator control parameter generation unit are connected in sequence, wherein,

The generator speed characteristic signal processing unit is used to perform smooth liner processing on the generator speed characteristic signal;

The speed calculation value generation unit is used to perform modulation processing according to the result processed by the generator speed characteristic signal processing unit as the speed calculation value;

The speed to toque data generation unit is used to adjust the time delay caused by the MCU calculation for the speed calculation value, as the input parameter speed to toquedata for the generator torque model control;

The generator control parameter generation unit is used to add the parameter speed totoque data and the output value of the original model under the existing MCU torque model structure, and the calculation result is used as the generator control parameter to control the generator.

Embodiment 9. A storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned method for controlling abnormal noise of a starter assembly of a dual-motor hybrid vehicle based on motor control is realized.

Embodiment 10. A vehicle, comprising: a memory, a processor, and a computer program stored in the memory and operable on the processor, and the processor executes the program to realize the motor-controlled motor control of the above-mentioned dual-motor hybrid vehicle. A method for controlling the abnormal sound of the starter assembly.

Compared with the modification of the hardware structure, this solution not only reduces the manufacturing cost and weight of the vehicle, but also has greater advantages in general adaptability. Based on the current hybrid vehicle motor control accuracy can be achieved, it has outstanding adaptability and comparative Good survivability, and promotional value.

The memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read only memory (read only memory, ROM), programmable read only memory (programmable ROM, PROM), erasable programmable read only memory (erasable PROM, EPROM), electrically erasable Programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM ), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and Direct memory bus random access memory (direct rambusRAM, DR RAM). It should be noted that the memory of the methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disc, SSD)) etc.

In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components . Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

Claims (10)

1. a kind of dual-motor hybrid system, it is characterized in that, described dual-motor hybrid system comprises engine (1), generator (2), torsional shock absorber (3), reduction gear mechanism (4), clutch ( 5), drive motor (6) and differential gear (7), described engine (1) is connected with generator (2) through torsion shock absorber (3) and reduction gear mechanism (4), and described reduction gear The mechanism (4), the clutch (5), the drive motor (6) and the differential (7) are sequentially connected by transmission. 2. A method for controlling the abnormal sound of the starter assembly of a dual-motor hybrid vehicle based on motor control, based on the dual-motor hybrid system according to claim 1, wherein the dual-motor hybrid vehicle is based on motor control The starting assembly abnormal sound control method includes the following steps: S100, the MCU identifies the rotational speed characteristics of the generator; S200. After the MCU completes the recognition of the rotational speed characteristics of the generator, optimize the torque model according to the rotational speed characteristics; S300. A torque model is obtained, and the MCU uses the torque model to suppress the fluctuation of the rotational speed of the assembly. 3. A method for controlling abnormal noise of a starter assembly of a dual-motor hybrid vehicle based on motor control according to claim 2, characterized in that, in S100, comprising the following steps: S110. When the vehicle is started at a fixed position or at a low vehicle speed, the generator is used as a starter to drive the engine to start; S120, the output torque of the generator first increases and then decreases, and the generator outputs negative torque after the engine is ignited, and the generator is driven by the engine to generate electricity; S130. In the generator torque reduction stage, the MCU identifies the generator speed data, and identifies and optimizes the generator speed data; S140. Process the optimized generator speed data to identify a characteristic signal of the generator speed. 4. The method for controlling the abnormal noise of the starter assembly of a dual-motor hybrid vehicle based on motor control according to claim 3, characterized in that, in S200, comprising the following steps: S210. Optimizing the generator speed characteristic signal; S220. Perform modulation processing according to the processed result as the speed calculation value; S230. Adjusting the time delay caused by the MCU calculation for the speed calculation value as an input parameter speed to toque data for the generator torque model control; S240. Under the existing MCU torque model structure, add the parameter speed to toque data to the output value of the original model, and use the calculation result as a generator control parameter to control the generator. 5. The method for controlling the abnormal noise of the starter assembly of a dual-motor hybrid vehicle based on motor control according to claim 4, wherein in S230, the method for adjusting the time delay caused by MCU calculation is: S231. Screening and analyzing the Speed calculation value to calculate the real-time period t0; S232. Analyze and obtain the time t1 taken by the theoretical MCU to process the generator speed and input it into the original torque model; S233, t0/2-t1 is the time to be adjusted, and the Speed calculation value is delayed by the time to be adjusted when inputting, and then S240 is executed. 6. A motor-controlled starting assembly abnormal sound control system for a dual-motor hybrid vehicle, which is applied to the motor-controlled starting assembly abnormal sound of a dual-motor hybrid vehicle described in any one of claims 2-5. The control method is characterized in that the abnormal sound control system of the starting assembly includes a rotation speed fluctuation identification module, a torque model optimization module and an assembly rotation speed fluctuation suppression module, and the rotation speed fluctuation identification module, torque model optimization module and assembly rotation speed suppression module The wave modules are connected sequentially, where, The rotational speed fluctuation identification module is used for the MCU to identify the rotational speed fluctuation of the generator; The torque model optimization module is used to optimize the torque model against the fluctuating speed after the MCU completes the identification of the speed fluctuation of the generator; The obtained torque model is used for the MCU to suppress the fluctuation of the rotational speed of the assembly through the torque model. 7. A dual-motor hybrid vehicle control system based on motor-controlled starter assembly abnormal sound according to claim 6, wherein the rotational speed fluctuation identification module includes an engine drive unit, a generator drive unit, Generator speed data identification optimization unit and generator speed fluctuation signal identification unit, wherein, The engine driving unit is used for starting the engine as a starter when the vehicle is started at a fixed position or at a low speed; The generator driving unit is used for the generator to output negative torque after the engine is ignited, and the generator is driven by the engine to generate electricity; The generator speed data identification and optimization unit is used to identify and optimize the generator speed data by the MCU during the generator torque reduction phase; The generator speed fluctuation signal identification unit is used for optimizing the optimized generator speed data and identifying the generator speed fluctuation signal. 8. A dual-motor hybrid vehicle based on motor control abnormal sound control system of starter assembly according to claim 7, characterized in that the torque model optimization module includes a generator speed signal processing unit and a speedcalculation value generating unit , a speed to toque data generation unit and a generator control parameter generation unit, the generator speed fluctuation signal processing unit, the speed calculation value generation unit, the speed totoque data generation unit and the generator control parameter generation unit are connected in sequence, wherein, The generator speed fluctuation signal processing unit is configured to perform smoothliner processing on the generator speed fluctuation signal; The speed calculation value generation unit is used to perform modulation processing as the speed calculation value according to the result processed by the generator speed signal processing unit; The speed to toque data generation unit is used to adjust the time delay caused by the MCU calculation for the speed calculation value as the input parameter speed totoque data for the generator torque model control; The generator control parameter generation unit is used to add the parameter speedto toque data to the output value of the original model under the existing MCU torque model structure, and the calculation result is used as the generator control parameter to control the generator. 9. A storage medium, on which a computer program is stored, wherein the computer program implements the method according to any one of claims 2 to 5 when executed by a processor. 10. A vehicle, characterized in that it comprises: a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor executes the program, so as to realize the A method for controlling the abnormal sound of the starter assembly of a dual-motor hybrid vehicle based on motor control described in any one of 2-5.

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