Electric wheel automobile chassis integration system and multi-disciplinary optimization method thereof

Abstract

The invention discloses an electric wheel automobile chassis integration system and a multi-disciplinary optimization method thereof. The electric wheel automobile chassis integration system comprisesa differential power-assisted steering system, a wheel hub motor driving system and a semi-active suspension system, and four independent hub motors are used for power-assisted steering and power driving. Movement of a complete automobile in all directions affects each other, subsystems interact, steering feel, steering sensitivity, steering energy consumption, driving energy consumption and suspension smoothness serve as subsystem-level objective functions, the comprehensive performance of the complete automobile serves as a system-level objective function, parts of structural parameters ofthe chassis integration system serve as optimization variables, and multi-disciplinary optimization is performed on the electric wheel automobile chassis integration system by the aid of the topological decoupling multi-disciplinary optimization method and a glowworm optimization algorithm.

Description

technical field [0001] The invention belongs to the technical fields of steering system, driving system and suspension system, and in particular relates to an electric wheel vehicle chassis integration system and a multidisciplinary optimization method thereof. Background technique [0002] The electric wheel vehicle is different from the traditional fuel vehicle, and the four wheels are driven independently by the hub motor integrating the motor and the wheel. The direct drive mode of the hub motor simplifies the traditional power transmission mechanism, improves the transmission efficiency, and is beneficial to the layout of the vehicle space and energy consumption, which makes the electric wheel vehicle have a good application prospect. [0003] The chassis integration system of electric wheel vehicles mainly includes steering, drive, suspension and other subsystems. The differential power steering system controls the output driving force of the left and right wheels acc...

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 electric wheel vehicle chassis integration system and its multi-disciplinary optimization method to solve the performance optimization results among subsystems of the electric wheel vehicle chassis integration system in the prior art The problem that simple superposition cannot obtain the optimal overall performance of the vehicle

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