Simulation Analysis Of Commercial Vehicle Seat Suspension Based On ADAMS And Simulink

Since the birth of the world's first car,research on the ride comfort of four-wheeled cars has gradually begun.The seat suspension is a vibration damping system that connects the driver and the vehicle,and its vibration damping performance has a direct impact on the driver's ride comfort.Through analysis of a large number of research data,it is found that optimizing the seat suspension is an effective way to alleviate the human discomfort caused by uneven input of the road surface.In this paper,based on the specific working conditions of commercial vehicles,the road surface excitation unevenness input of commercial vehicle seat suspension system is determined.Based on this,the simulation model of passive seat suspension system based on Simulink software and ADAMS and Simuink based are built.The passive seat suspension system combined simulation model was carried out,and the passive simulation model was analyzed in time domain and frequency domain to prepare for the simulation comparison of the active seat suspension system model.In this paper,the active controller of the commercial vehicle seat suspension system is designed,and the key parameters and control rules of the PID controller,fuzzy controller and adaptive fuzzy PID controller are determined in turn,and the three controllers are completed.Then the active controller is respectively connected to the seat suspension system simulation model of the separate Simulink environment and the joint simulation model of the seat suspension system based on ADAMS and Simuink,and run the simulation model and record the experimental simulation resultsFinally,the experimental simulation results of the seat suspension simulation model under different control states are analyzed,and the research conclusions are drawn.The results show:(1)Compared with the commercial vehicle simulation model with passive seat suspension,the commercial vehicle simulation model with active seat suspension can better isolate vehicle vibration and reduce driver and seat under the same road excitation.The vertical acceleration of the chair and the travel of the seat suspension demonstrate the effectiveness of improving the ride comfort of commercial vehicle drivers by optimizing the seat suspension.(2)The control effect of the adaptive fuzzy PID control technology is better than that of the single PID controller or the separate fuzzy controller.