Simulation of active vibration suppression using internal motor sensing

Abstract

Suppression of unnecessary vibration is an important aspect in control system design. Passive, semi active, and active suspension systems are used in vehicles to suppress vibrations and theoretically active suspension systems provide superior performance than the prior two types. This paper proposes a novel method to suppress vibrations using internal motor sensing method. The proposed active vibration suppression system uses a reaction force observer to measure and suppress vibrations acting on the system without using environmental sensors. The motor forcer acceleration and a current sensor measurements are used by the reaction force observer to measure the vibration forces in the system. The proposed system performed system performance, robustness, and applicability is evaluated using quarter car suspension system model. The proposed system is simulated for different conditions to measure the system vibration suppression capabilities. The simulation results provide evidence of robust vibration suppression capabilities and applicability of the controller for real world applications.