Quarter Car Suspension System Modelling, Simulation, And Performance Analysis under Dynamic Conditions

Abstract The motor vehicle is constructed up of numerous systems. The suspension system is one of them. The primary purposes of the automotive suspension system are to effectively isolate the vehicle from road disturbances and to provide stability, directional control, and vehicle support during handling movements. The suspension system must strike a compromise between ride quality and handling ability of the car. This study uses a linear quadratic regulator (LQR) controller to analyse the active suspension system and the passive suspension system. This study aims to simulate and analysis of the vehicle performance by construct a MATLAB/SIMULINK on quarter automobile model. For this research, the sinusoidal roads and a random road inputs are used to study the effect of road irregularity and vehicle speeds on the performance of the suspension system. purposely 30,60,90 and 120km/hr are selected for this study. The passive suspension system and the LQR controller's performance are contrasted. The simulation's findings demonstrate how the LQR controller enhances ride comfort and wheel deflection in automobiles suspension system at all road inputs even at high vehicle speed the LQR controller help the system for better ride comfort of the passengers and help the system to better life of the vehicle.