COMPARISON OF CONTROLLERS FOR NONLINEAR ACTIVE SUSPENSION SYSTEM

Abstract

Backstepping controller and Sliding Mode controller are designed to control
the active nonlinear suspension system. By comparing the performance
between Backstepping, Sliding Mode, PID and passive suspension (controllerless
suspension) to find the best control method. Performance considerations are:
ride comfort, grip, suspension space and force saturation. Matlab Simulink is
used to simulate and produce results under a given pavement input. The results
show that the Sliding Mode controller gives the best results. Then there are
Backstepping and PID controllers. The suspension using the controller gives
better results than the passive suspension.