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Firstly,in view of the respective defects of existing self-centering devices for vehicle suspension height,the design scheme of the proposed mechanical self-centering device for suspension height is described.Taking the rear suspension of a certain light bus as a research example,the structures and parameters of the novel device are designed and ascertained.Then,the road excitation models,the performance evaluation indexes and the half-vehicle model are built,the simulation outputs of time and frequency domain are obtained with the road excitations of random and pulse by using MATLAB/Simulink sofiware.So the main characteristics of the self-centering suspension are presented preliminarily.Finally,a multi-objective parameter design optimization model for the self-centering device is built by weighted sum approach,and optimal solution is obtained by adopting complex approach.The relevant choosing-type parameters for self-centering device components are deduced by using discrete variable optimal method,and the optimal results are verified and analyzed. So the performance potentials of the self-centering device are exerted fully in condition of ensuring overall suspension performances.
Firstly, in view of the different defects of the existing self-centering devices for vehicle suspension height, the design scheme of the proposed mechanical self-centering device for suspension height is described.Taking the rear suspension of a certain light bus as a research example, the structures and parameters of the novel device are designed and ascertained. Chen, the road excitation models, the performance evaluation indexes and the half-vehicle model are built, the simulation outputs of time and frequency domain are obtained with the road excitations of random and pulse by using MATLAB / Simulink sofiware.So the main characteristics of the self-centering suspension are presented preliminarily. Finally, a multi-objective parameter design optimization model for the self-centering device is built by weighted sum approach, and optimal solution is obtained by adopting complex approach. The relevant choosing-type parameters for self-centering device components are deduced by using discrete variable optimal method, and the optimal results are verified and analyzed. So the performance potentials of the self-centering device are exerted fully in condition of ensuring overall suspension performances.