CAN (controller area network) bus-based driving-driven distribution type control system of electric vehicle driven by hub motors

Abstract

The invention relates to a CAN (controller area network) bus-based driving-driven distribution type controlled four-wheel-drive electric vehicle control system. A vehicle controller and four hub motor drive controllers form a driving-driven distribution type control system, the vehicle controller receives a control command of a driver to carry out differential computation of operation of the vehicle and sends the rotation speed, obtained through the computation, of each wheel to the hub motor drive controllers, and the hub motor drive controllers control motors to rotate, so that the running or braking energy recovery of the whole vehicle is realized; when the vehicle carries out a steering operation, the vehicle controller utilizes electronic differential control to replace a mechanical differential device of the traditional vehicle according to signals of a steering angle sensor to carry out the regulation on the running speed of each hub motor, so that an expected running state is realized; the CAN bus-based driving-driven distribution type controlled four-wheel-drive electric vehicle control system simplifies the driving structure of the traditional vehicle, has the advantages of light weight of the whole vehicle, flexibility in control, safety, energy-saving and environment friendliness, and is suitable for the control of electric vehicles.

Description

technical field [0001] The invention relates to a master-slave distributed control control system for an electric vehicle driven by a hub motor based on a CAN bus, and belongs to the field of electric vehicle control. Background technique [0002] Since the beginning of the 21st century, due to the rapid development of the automobile industry in developing countries, the number of automobiles has exploded. With the rapid growth of the number of automobiles, the proportion of automobile fuel consumption in all oil production is also increasing. The global energy crisis is becoming more and more obvious, and the ecological environment is deteriorating day by day. At the same time, under the background of the continuous development of the automobile industry, new energy vehicles that do not rely on petroleum fuels, have high efficiency, low pollution or even no pollution will gradually become the most competitive products in the future society. The harmonious coexistence of hu...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes an effective, simple, practical, safe and reliable distributed network-controlled electric vehicle control system for the current electric four-wheel drive electric vehicle, which conveniently solves the problems of complex control and low real-time performance of four-wheel independent drive electric vehicles

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