Automobile intelligent drive-by-wire chassis system and uncertainty optimization method thereof

Abstract

The invention discloses an automobile intelligent drive-by-wire chassis system and an uncertainty optimization method thereof. The automobile intelligent drive-by-wire chassis system comprises a drive-by-wire steering subsystem, a drive-by-wire braking subsystem, a drive-by-wire driving subsystem and a drive-by-wire chassis domain controller. The drive-by-wire driving subsystem comprises four electric wheels and four hub motors; each hub motor is installed in the corresponding electric wheel and drives the electric wheel to work. The steer-by-wire subsystem comprises a first steering motor assembly, a second steering motor assembly, a gear rack steering gear, a steering trapezoid and a lower steering column; the brake-by-wire subsystem comprises an executing mechanism and a brake motor assembly. The executing mechanism comprises brake calipers, a transmission device and a brake disc. The drive-by-wire chassis domain controller is used for generating a control instruction of each motor;the drive-by-wire steering, drive-by-wire braking and drive-by-wire driving functions are fused, the chassis structure is simplified, chassis light weight and arrangement space optimization are facilitated, the chassis integration degree is improved, and integrated control is facilitated.

Description

technical field [0001] The invention belongs to the technical field of automobile chassis systems, and in particular relates to an automobile intelligent wire-controlled chassis system and an uncertain optimization method thereof. Background technique [0002] The automobile chassis mainly includes the steering system, the braking system, the transmission system and the driving system. The traditional automobile chassis is assembled independently by the above systems, which are designed and controlled separately, and there is a complex coupling relationship. With the development of automobile intelligence, the traditional automobile chassis cannot fully realize electronic control due to the limitation of mechanical structure, nor can it work in coordination to play the best function. Therefore, the control-by-wire chassis has become a research hotspot. [0003] The control-by-wire chassis mainly includes modules such as brake-by-wire, steering-by-wire and drive-by-wire. Bra...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide an automobile intelligent control-by-wire chassis system and its uncertain optimization method. By setting redundant drive-by-wire actuators, it can provide the function realization and performance improvement of the control-by-wire chassis. It guarantees fault tolerance, and solves the problem that the optimal design of the chassis by wire in the prior art does not consider the influence of uncertain factors and cannot achieve optimal performance under all working conditions.

Images