Research on Control Algorithm and Optimization of Multi-speed Damping Switchable Semi-active Suspension
A control algorithm is proposed in this paper for multi-damping setting switchable automobile semi-active suspensions.Based on differential-element method and the second generation non-dominated sorting genetic algorithm(NSGA-Ⅱ),a control law is designed and its parameters are optimized.Considering the nonlinear characteristics of spring and nonlinear damper,a nonlinear vehicle-suspension system simulation model is established firstly.Simulation results of system performance are obtained and the model precise is proved by result comparison.Then,a control algorithm for se-mi-active suspension with switchable damping sets is designed by using NSGA-Ⅱ to optimize damping coefficients respec-tively working in different motion conditions.The study results show that,compared with passive system,the vehicle perfor-mances of the switchable-damping semi-active suspension can be improved significantly.
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维普
