Study On Control Technology And Performance Analysis Of Vehicle Suspension Base On Multi-Body Dynamics

This paper made a study on vehicle suspension base on multi_body dynamics and the dynamic analysis presented thus far uses the Lagrange's method to obtain the equation of motion aiming at an ordinary limousine. The multi_body mathematical model includes vehicle body, front wheel, rear wheel, three mumbers together, and is a system of thirteen equations and five freedoms. The number value default was solved, and the statical balance, the kinetics analysis, and the computer simulation investigation on vehicle suspension were proceeded. Furthermore, an active suspension control system simulation using a fuzzy control scheme, a PID control scheme and a fuzzy_PID compound control scheme was proceeded respectively. The computation results showed that the multi_body system model was accuracy, the fuzzy_PID compound control scheme was compact, both was just combined well, and this system had a good performance on improving the vehicle's ride comfort characteristics.