Controller design for active suspension system for car with unknown time-delay and road disturbances

Abstract EN

In this paper we consider the quarter car active suspension system suffering from unknown timedelay and external road disturbances.

We derived a control law for achieving stability of the system and convergence that can considerably improved the ride comfort and road disturbance handling.

This is accomplished by using Routh-Herwitz criterion and based on some assumptions.

A mathematical proof is given to show the ability of the designed controller to ensure stability and convergence of the active suspension system and dispersion fast oscillation of system despite unknown time-delay and road disturbances.

Simulations were also performed for controlling quarter car suspension, where the results obtained from these simulations verify the efficiency of the proposed design to faster suppression oscillation and obtain stability although present of unknown time-delay and road disturbance.