Height Control Strategy of Electronic Control Air Suspension of Passenger Car
In order to improve the control precision of electronically controlled air suspension of passenger car in the process of body height adjustment,a PID controller based on particle swarm is designed.Through the analysis of the working mechanism of the air suspension system,the mathematical model of the single-wheel air suspension is established by using AMESim.Aiming at the problem of"overcharging and over-discharging"in the process of vehicle height adjustment,a PID controller based on particle swarm is designed,and a vehicle air suspension model is established based on the AMESim-Simulink-Carsim joint simulation platform to carry out its control effect verify.Finally,a real vehicle test is carried out.The results show that the steady-state errors of the designed PID controller based on particle swarm under different working conditions are less than 2 mm,and there is no obvious phenomenon of repeated height adjustment or control overshoot.
electronic control air suspensionPSO-PIDheight control
万方数据
维普
