Motor torque control method and system

A technology of motor torque and control method, which is applied in the direction of control drive, control device, electric vehicle, etc., to prevent slope slippage and improve the timeliness of dynamic response.

Inactive Publication Date: 2020-09-11
摩登汽车有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem in the prior art that there will be a certain time delay when the brake is completely released and enters the creeping condition until the vehicle controller calculates and outputs the torque.

Method used

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  • Motor torque control method and system

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Embodiment 1

[0036] In order to solve the problem in the prior art that the brake is completely released and enters the creeping working condition, there will be a certain time delay until the vehicle controller calculates and outputs the torque, such as figure 1 As shown, the implementation of this embodiment discloses a motor torque control method, judging whether the car is in the parking idle state according to the working condition signal; wherein, the working condition signal includes the accelerator pedal signal, the brake pedal signal B, the vehicle speed signal and the gear Bit signal; when the car is in the parking idle state, first output the pre-torque T of the motor; obtain the actual torque T1 of the motor according to the pre-torque T of the motor and the signal B of the brake pedal.

[0037] Specifically, the accelerator pedal signal can be obtained through the accelerator pedal sensor; the brake pedal signal B can be obtained through the brake pedal sensor; the vehicle spee...

Embodiment 2

[0048] Such as figure 2 As shown, the present embodiment provides a motor torque control system, including a vehicle control unit 100 and a computing unit 200 connected by communication, and the vehicle control unit 100 detects the working condition signal to determine whether the vehicle is in a parking idle state; wherein, the working Condition signal includes accelerator pedal signal, brake pedal signal B, vehicle speed signal and gear position signal; The pedal signal B obtains the actual torque T1 of the motor.

[0049] Specifically, the vehicle control unit 100 detects the working condition signal to determine whether the vehicle is in a parked idle state; wherein the working condition signal includes an accelerator pedal signal, a brake pedal signal B, a vehicle speed signal and a gear position signal. Therefore, the vehicle control unit 100 may include an accelerator pedal sensor for obtaining the accelerator pedal signal; the vehicle control unit 100 may also includ...

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Abstract

The invention discloses a motor torque control method and system. The motor torque control method comprises the steps that whether an automobile is in a parking idling state or not is judged accordingto a working condition signal; when the automobile is in a parking idling state, the pre-torque T of the motor is output firstly; and the actual torque T1 of the motor is obtained according to the pre-torque T of the motor and the brake pedal signal B. According to the control method of the motor torque, the actual torque T1 of the motor is obtained according to the pre-torque T of the motor andthe brake pedal signal B, and the problem that certain time delay exists when a brake is completely loosened to enter a creeping working condition to a whole automobile controller to calculate and output the torque can be effectively solved. Therefore, when the automobile is on a flat road, the actual torque T1 can improve the power response timeliness of creeping starting; and when the automobileis on a ramp, the actual torque T1 can counteract a certain degree of ramp load to prevent the automobile from sliding on the ramp or relieve the degree of slope sliding on the ramp.

Description

technical field [0001] The invention relates to the technical field of automobile torque control, in particular to a motor torque control method and system. Background technique [0002] Creeping refers to a control condition in which the vehicle's gear is already in the driving gear, and the driver has completely released the brakes, but has not stepped on the accelerator, and the vehicle controller controls the vehicle to crawl slowly. Usually in the torque control of electric vehicles, when the vehicle is stationary and the driver steps on the brake, the vehicle controller (VCU) has no torque output. Only when the driver fully releases the brake and the VCU judges that it has entered the creeping condition, it starts to calculate and output the torque to drive the vehicle. However, this motor torque control method is not conducive to the timely response of power when the vehicle creeps and starts. Because there will be a certain time delay from when the brake is fully r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/2063B60L15/2081B60L2240/12B60L2240/423B60L2240/486B60L2260/44Y02T10/72
Inventor 柏安明
Owner 摩登汽车有限公司
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