Rear wheel independent drive control system and method for electric automobile

Abstract

The invention discloses a rear wheel independent drive control system and method for an electric automobile. The system comprises a steering wheel rotation angle sensor, a yaw velocity sensor, an electronic accelerator pedal, a whole automobile drive controller, a CAN communication network, a rear right hub motor, a rear right hub motor controller, a rear left hub motor controller and a rear left hub motor. The whole automobile drive controller is connected with the steering wheel rotation angle sensor, the yaw velocity sensor, the electronic accelerator pedal, the rear right hub motor controller and the rear left hub motor controller through the CAN communication network. The rear right hub motor controller is connected with the rear right hub motor. The rear left hub motor controller is connected with the rear left hub motor. Electronic differential and drive skid prevention are combined to conduct comprehensive control, the novel integrated drive control method which integrates electronic differential, drive skid prevention and torque coordination control is put forward, operation stability and driving safety are improved when the electric automobile driven by rear wheels independently is under various actual complex working conditions.

Description

technical field [0001] The invention belongs to an electric vehicle drive control system, in particular to a rear wheel independent drive control system and method for an electric vehicle. Background technique [0002] Multi-wheel independent drive pure electric vehicles have many advantages such as improving the power and stability of the whole vehicle. However, due to their high requirements on motor performance and drive control system, they are mostly seen in concept cars or experimental vehicles at present. In terms of research on the key technology of multi-wheel independent drive electric vehicle vehicle control, although there have been many related studies on electronic differential and drive anti-skid, they are often studied as a separate control strategy, and the research on implementing comprehensive control together is more difficult. There are few researches on torque coordination control based on drive anti-slip. If the specific control functions such as diff...

AI Technical Summary

Problems solved by technology

In terms of research on the key technology of multi-wheel independent drive electric vehicle vehicle control, although there have been many related studies on electronic differential and drive anti-skid, they are often studied as a separate control strategy, and the research on implementing comprehensive control together is more difficult. There are few researches on torque coordination control based on drive anti-slip

If the specific control functions such as differential speed or drive anti-skid cannot be organically unified, it will not be able to meet the requirements of multi-wheel independent drive electric vehicles for normal driving under various complex working conditions, which restricts the practical application and development of multi-wheel independent drive electric vehicles. develop

Images