Three-motor integrated high-reliability intelligent drive-by-wire system and control method thereof

Abstract

The invention provides a three-motor integrated high-reliability intelligent drive-by-wire system and a control method thereof. The drive-by-wire system comprises a signal input module, a brake module, a steering module, a redundancy module and an integrated ECU control module, and the signal input module is used for judging the operation intention of a driver for controlling steering and braking of a vehicle; the brake module is used for achieving a conventional braking function after a driver braking signal is received, the steering module is used for achieving a conventional steering function after a driver steering signal is received, and the redundancy module is used for being combined with a non-faulty module under the control of the ECU1 when one of the braking function or the steering function breaks down so as to carry out redundant work on a faulty module; the integrated ECU control module is used for receiving related signals, judging the states of all the modules and the braking or steering intention of the driver through calculation and analysis, and controlling all the modules to work so as to achieve the functions of steering, braking and mutual redundancy, so that the system requirements and safety under different working conditions and states are met.

Description

technical field [0001] The invention relates to the field of wire-control chassis technology, and in particular designs a three-motor integrated high-reliability intelligent wire-control system and a control method thereof. Background technique [0002] The main function of the car chassis is to realize functions such as acceleration, deceleration and steering of the car. The optimization of the component technology can effectively improve the overall performance of the car. Therefore, the current development of the automobile industry mainly focuses on the research issues of automobile chassis integration and control technology. With the development of intelligent and electronic automobiles, whether it is an electric vehicle or a fuel vehicle, the control-by-wire chassis technology has become a popular research topic at home and abroad. There are five main systems in the control-by-wire chassis, namely, steering-by-wire, brake-by-wire, shift-by-wire, drive-by-wire and sus...

AI Technical Summary

Problems solved by technology

For example, when considering the redundancy of the steering-by-wire system and the brake-by-wire system at the same time, both the steering-by-wire system and the brake-by-wire system adopt a dual-motor redundancy design, and a total of four motors are required to realize steering redundancy and braking respectively. Redundant functions, coupled with the controllers and circuits corresponding to each motor, the overall quality impact and space waste will be relatively large

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