Driving/braking system and method of independent four-wheel electric automobile

Abstract

The invention relates to a driving / braking system of an independent four-wheel electric automobile, comprising a working condition detection device, a control device, a drive motor driver and a braking device driver, The working condition detection device respectively detects various working condition signals of the electric automobile; the control device processes and calculates the working condition signals to obtain driving control signals and / or braking control signals which correspond to wheels of the electric automobile; and the drive motor driver and the braking device driver respectively control the output of a drive motor and a braking device which respectively correspond to the wheels of the electric automobile according to the driving control signals and / or the braking control signals. The invention can flexibly and reasonably distribute the driving force and the braking force according to working conditions and realize the initiative safety driving / braking of the independent four-wheel electric automobile.

Description

technical field [0001] The invention relates to a control system of a four-wheel drive electric vehicle, in particular to a driving / braking system and method for an independent four-wheel drive electric vehicle. Background technique [0002] With the rapid development of high-power engines, four-wheel drive (4WD) control technology is widely used in order to maximize the transmission of driving force and improve the acceleration and passability of automobiles on various road surfaces. However, due to problems such as energy crisis and environmental pollution, electric vehicles have been more and more extensively researched and developed. Therefore, four-wheel independently driven electric vehicles with in-wheel motors have become a research hotspot. The hub drive motor has completely changed the traditional driving method of the car. The motor is installed in the hub of the wheel, and the rotor of the motor is an outer rotor. The output torque directly drives the wheel, and...

AI Technical Summary

Problems solved by technology

In the event of various failures such as motor failure of a certain wheel, wheel slippage, puncture or wheel lock, causing the wheel to deviate from its original direction, or due to uneven ground or obstacles under the wheel causing the vehicle to turn unintentionally, or the vehicle Under working conditions such as uphill and downhill, it is necessary to reasonably allocate or control the driving force / braking force of the four wheels according to the working conditions of the wheels, but currently there is no automatic and reasonable distribution of the driving force / braking force according to the working conditions of the wheels or control scheme to realize flexible and independent driving and / or braking of four wheels to assist the driver in safe driving and braking operations

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