Controller Design for Active Suspension System for car with Unknown Mass by Using Routh-Hurwitz Criterion

Abstract

In this paper we consider the quarter car active suspension system with unknown mass and the road disturbance . A control law was derived 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 with unknown mass and road disturbances . Simulations were also performed for controlling quarter car suspension, where the results obtained from these simulations verify the validity of the proposed design.