Electric vehicle, active safety control system for electric vehicle and control method for active safety control system

Abstract

The invention discloses an electric vehicle, an active safety control system for the electric vehicle and a control method for the active safety control system. The electric vehicle comprises multiple wheels, multiple motors corresponding to the multiple wheels, a wheel speed detection module for generating wheel speed signals, a steering wheel angle sensor for detecting direction information of the electric vehicle, a yaw rate sensor for detecting yaw information of the electric vehicle and a battery pack. The active safety control system comprises an obtaining module for obtaining the wheel speed signals, the direction information of the electric vehicle, the yaw information of the electric vehicle, state information of the battery pack and state information of the multiple motors, a state confirming module for confirming the state of the electric vehicle, and a control module for generating control commands and sending the control commands to at least one motor, so that at least one motor conducts drive control over at least one corresponding wheel when sideslip happens and before the vehicle is in a sideslip limit interval and conducts brake control over at least one corresponding wheel when the vehicle is in the sideslip limit interval.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an active safety control system of an electric vehicle, a control method of the active safety control system of an electric vehicle, and an electric vehicle. Background technique [0002] ESP (Electronic Stability Program, electronic vehicle stability control system) is an automotive electronic control system that can help the driver maintain vehicle stability under extreme conditions. Usually it consists of sensor system (including steering wheel angle sensor, yaw rate sensor, lateral acceleration sensor, wheel speed sensor), hydraulic actuator system and ECU (ElectronicControlUnit, electronic control unit). The basic principle of ESP is to prevent the vehicle from entering an uncontrollable unstable state by implementing longitudinal dynamics control (indirect lateral force control) on the vehicle in a critically stable state according to the driver's manipulation int...

AI Technical Summary

Problems solved by technology

[0003] At present, in traditional vehicles, the hydraulic braking system is indispensable. Therefore, the ESP on the current vehicle is based on the hydraulic braking to achieve stable control of the vehicle. However, the hydraulic braking system is relatively complicated, and the response is slow. high cost

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