Vibration analysis of automotive seating systems with additional nonlinear energy sink

In order to improve the driving comfort of the car, this paper establishes a damping control model of the car seat with nonlinear energy sink. The simulation model is created by Matlab/Simulink software, and the fuzzy control parameters are optimized by improved particle swarm algorithm to fuzzy control the acceleration response in the vertical direction of the seat under random road and step excitation, and the comparison of the car seat under passive control of suspension, passive control of power absorber, passive control of nonlinear energy trap and active control of nonlinear energy sink with fuzzy algorithm is derived. The simulation results prove that the additional power absorber and nonlinear energy sink can effectively reduce the acceleration response amplitude in the vertical direction of the seat compared with the passive control of the car seat suspension; the vibration control effect of the nonlinear energy sink is better than that of the power absorber, and the nonlinear energy sink under fuzzy control can provide better damping effect.