Pure electric vehicle starting anti-shake control method

Abstract

The invention provides a pure electric vehicle starting anti-shake control method. The method comprises the steps that step 1, a high-voltage relay state, motor working mode information and current vehicle actuation information are collected by a vehicle control unit (VCU); step 2, the current vehicle state is judged through the vehicle control unit (VCU) according to the collected high-voltage relay state; step 3, the driving state of a motor system is judged through the vehicle control unit (VCU) according to the collected motor working mode information; step 4, the vehicle control unit (VCU) initiates a corresponding request torque T to the motor system according to the current vehicle state, the driving state of the motor system and the collected current vehicle actuation information;and step 5, the motor system directly executes the request torque T after receiving the request torque T, and the matching condition of gears is controlled by outputting the corresponding torque through the motor system. Through the method, the effect that the gear matching process of a transmission system is smooth is ensured, and impact in the starting process is reduced.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a control method for anti-vibration at the start of a pure electric vehicle. Background technique [0002] Due to the existence of gear gaps in the vehicle transmission system, when the pure electric vehicle starts from a standstill, the gears will have an impact during the fitting process, resulting in a sense of vibration during the starting process of the vehicle, which reduces the comfort of the vehicle and affects the driving of customers. experience. [0003] The Chinese invention with the application number 201510662301.5 filed on October 14, 2015 protects a pure electric drive start control method for hybrid electric vehicles. The method is to control the drive motor to perform closed-loop control of the speed when the vehicle is fully electric start. , the speed of the drive motor is required to be kept at the target speed, the clutch in the gearbox is controlled to...

AI Technical Summary

Problems solved by technology

[0002] Due to the existence of gear gaps in the vehicle transmission system, when the pure electric vehicle starts from a standstill, the gears will have an impact during the fitting process, resulting in a sense of vibration during the starting process of the vehicle, which reduces the comfort of the vehicle and affects the driving of customers. to experience

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