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Optimal Control of Vehicle Active Suspension System

Vivek Kumar Maurya and Narinder Singh Bhangal
Instrumentation and Control Engg.,BR.Ambedkar National Institute of Technology,Jalandhar,India

Abstract—The main aim of Suspension System is to provide the passenger comfort by minimizing the vertical acceleration of the body and to isolate the body irrespective of road profile. A linear model of active suspension system has been developed since it contains all the basic parameters of its performance body deflection, suspension deflection and body acceleration. Two control techniques PID and LQR are used to suppress the vibrations of the system. A comparison between passive and active suspension system using PID and LQR control technique with road disturbance as input has been made. Simulation study has been made on the active suspension system using MATLAB/SIMULINK. Based on the simulation, it has been found that LQR control is better in suppressing the vibrations as compared to PID control as well as Passive suspension system. 

Index Terms—Vehicle Active Suspenion system(VASS), Proportional-Integral-Derivative (PID), Linear Quadratic Regulator (LQR)

Cite: Vivek Kumar Maurya and Narinder Singh Bhangal, "Optimal Control of Vehicle Active Suspension System," Journal of Automation and Control Engineering, Vol. 6, No. 1, pp. 22-26, June, 2018. doi: 10.18178/joace.6.1.22-26
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