DefinePK

Abstract

The purpose of vehicle suspension system is to keep-off the vehicle main body from any road geometrical irregularities thereby improving the comfort as well as maintaining a good handling stability. This work aim at designing a double loop PID control of generated force and vehicle suspension parameters using a four degree of freedom, nonlinear, half vehicle active suspension system model with hydraulic actuator. The loops arrangement is made up of an inner hydraulic actuator PID force control loop and an outer suspension parameters PID control loop. Simulation study was carried out; comparisons were made between the nonlinear active PID base suspension systems with a nonlinear passive system. Results obtained show a better performance improvement in the active system when compared to the passive system at the expense of cost and power consuming.