Anti-shake control system of pure electric vehicle

Abstract

The invention discloses an anti-shake control system of a pure electric vehicle. The anti-shake control system of the pure electric vehicle comprises a motor controller, a MCU motor vector control system adopted by the motor controller comprises an active damping control module, the active damping control module is correspondingly connected with a decoding chip and a maximum torque current ratio control module in the MCU motor vector control system through circuits and an output port of a vehicle control unit, the active damping control module can receive a torque command Te _ ref output by the vehicle control unit and a motor rotating speed v output by the decoding chip, the active damping control module obtains a damping torque command Te according to a motor rotating speed vibration component vn and the torque command Te _ ref separated by the received motor rotating speed v, and transmits the damping torque command Te to the maximum torque current ratio control module, wherein thedamping torque command Te is equal to Te _ ref-K * vn and the K is damping coefficients. According to the anti-shake control system, by arranging the active damping control module, an oscillation signal of the system is separated, the damping is added to the system to inhibit oscillation of a transmission system, and the on-site effect is good.

Description

technical field [0001] The invention relates to the technical field of control of pure electric vehicles, in particular to a pure electric vehicle anti-shake control system that separates the oscillation signal of the system and adds damping to the system according to the oscillation signal to suppress the oscillation of the transmission system. Background technique [0002] The schematic diagram of pure electric vehicle control figure 1 As shown, after the driver depresses the accelerator pedal, the accelerator pedal converts the opening signal into an analog level signal U i , sent to the vehicle controller; the vehicle controller will collect the analog level signal U i , get the driver's torque command T by looking up the table e_ref (The corresponding relationship between the analog level signal and the torque command of the pure electric vehicle is as follows figure 2 shown); the vehicle controller will set the torque command T e_ref Send it to the motor controlle...

AI Technical Summary

Problems solved by technology

When the driver is stepping on the accelerator pedal, the motor responds to the torque faster; and the lack of damping in the transmission system will cause the vibration of the transmission system, resulting in vibration and noise of the vehicle body

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