ABSTRACT
Taking a minivan system as the research object, a process of kinematic characteristics analysis and optimisation design is presented. The simulation of parallel wheel travel of the suspension of the minicar is carried out and analysed. The characteristics curves of four front wheel alignment parameters including toe angle, camber angle, caster angle, and kingpin inclination angle are drawn, the unreasonable alignment parameters are drawn, and the non-ideal characteristics of the wheel alignment parameters are established. The objective function is then to reduce the variation of the unreasonable alignment parameters; the design variables are given by the sensitivity analysis, and the constraint condition is the change in the coordinate values of key hard points. By optimising wheel alignment parameters, and the original and optimised simulation results, a better solution is obtained and the system performance of the suspension is improved.
