Regenerative and conventional brake integrated controller and its control based on ABS for automobile

Abstract

The invention is concerned with integrated controller of vehicle regenerative braking and routine braking based ABC. Motor braking joins the ABC braking system and the braking motor takes part in the ABC braking. The integrated controller gathers the energy regenerative braking and routine ABC braking. The controller confirms the braking requirement on the signal of braking footplate and speed state of vehicle, and confirms the biggest regenerative braking moment on the state of energy storage equipment and the power of motor. When the braking ability of motor reaches to the requirement of braking former axis, the motor can finish the brake of the former axis, and works out the braking power of back axis according to braking power distributing curve and realizes by routine braking system. When the requirement of former axis braking is bigger than the braking ability of motor, the routine braking and motor braking work together to realize the correspond of regenerative braking and ABC braking system of hydraulic pressure. It enhances the callback ratio of braking energy and the responding speed is quick for using motor braking to control the ABC control of vehicle.

Description

technical field [0001] The invention relates to an ABS-based integrated controller and control method for automotive regenerative braking and conventional braking, which integrates motor braking into the ABS braking system, and the braking motor itself also participates in ABS braking, which not only realizes regenerative braking The dynamic and hydraulic ABS braking system are coordinated and compatible, which improves the braking energy recovery rate, and can also make full use of the advantages of fast braking response of the motor to better realize the anti-lock braking control of the vehicle. Background technique [0002] The ABS hydraulic braking system determines the slip rate of the vehicle according to the parameters such as wheel speed and vehicle speed. When the slip rate exceeds the reference value, the brake is in an unstable state, and the braking torque should be reduced to prevent the wheels from locking; When it is lower than the reference value, in order to...

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Problems solved by technology

[0003] According to the relevant technical literature search, there are mainly two coordination methods of regenerative braking and conventional braking. One is that the driver manually activates or stops coasting energy feedback charging. The regenerative braking torque is determined by the vehicle speed and the state of battery SOC. The operation is complicated and can only reflect the function, the feedback energy is small, and the switching transition is not soft; the other is to judge the total braking force demand according to the vehicle speed, brake pedal travel, and brake hydraulic pressure sensor, and through the regenerative braking torque and mechanical braking. Reasonable distribution of torque to achieve compatibility between the two. This method is complex to control and cannot achieve compatibility with the ABS system. See Zhang Yi, Yang Lin, etc. Vehicle Control of Energy Feedback for Electric Vehicles. Automotive Engineering. 2005(7) : 24~27

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