Coordination control system of four-wheel independent drive and independent steering electric automobile

Abstract

The invention discloses a coordination control system of a four-wheel independent drive and independent steering electric automobile. The coordination control system comprises a global signal feedback module, an entire vehicle control module, a coordination control module and a motor control module which are connected in sequence, wherein the entire vehicle control module comprises an entire vehicle controller, and a battery management system, a vehicle-mounted lighting device and a refrigerating and heating device which are connected with the entire vehicle controller. Since the coordination controller is arranged, over-complex design of the entire vehicle controller can be avoided, and the real-time response speed and the operation reliability of the entire vehicle controller, the coordination controller and the motor controller are improved. The energy utilization efficiency and the driving comfort of the four-wheel independent drive and independent steering electric automobile are improved by the coordination controller, and the safety in running is improved. A more scientific modular control is realized, the modular production of the electric automobile is facilitated, and the technical innovation of an electric automobile controller manufacturer is promoted, so that the development of the entire electric automobile industry is promoted.

Description

technical field [0001] The invention belongs to the field of complete vehicle control of electric vehicles, in particular to a coordinated control system for electric vehicles with four-wheel independent drive and independent steering. Background technique [0002] With the increasingly serious air pollution and energy crisis, the sustainable development of the traditional automobile industry is facing an increasingly severe situation. Electric vehicles are an effective way to solve the above problems, and have been researched and developed more and more widely. At present, most electric vehicles are driven by the rear two wheels or the front two wheels. Based on considerations of energy transfer efficiency and vehicle body space constraints, four-wheel independent drive and independent steering electric vehicles with brushless DC in-wheel motors have become a research hotspot at home and abroad in recent years. The emergence of the hub drive motor has changed the traditio...

AI Technical Summary

Problems solved by technology

[0007] However, compared with vehicles with other driving modes, four-wheel independent drive and independent steering electric vehicles have increased control volume and more complex control systems. More research work on current four-wheel independent drive and independent steering electric vehicles is mainly Concentrate on the control of the driving motor, the problem of differential speed control and the design of the vehicle controller

But there is no relevant optimization design for the vehicle control system with many control quantities

The control system of traditional electric vehicles mostly adopts the control scheme of vehicle controller plus motor controller, in which the vehicle controller not only handles a series of auxiliary functions such as on-board lighting, cooling and heating device switching, battery management, and regenerative braking system , but also accept the driver’s command set to control the operation of the electric vehicle in real time, which not only makes the structure design of the vehicle controller complex, the control strategy is relatively cumbersome, but also may cause the driver’s real-time operation response delay, and the control performance of the vehicle become worse, which hinders the further development of the entire electric vehicle industry

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