Simulation of Control System for a Half Car Model Suspension System for Passenger Car Application by Design an LQR Controller

Authors : Walelign Wudu Bezabh; Ayitenew Mogninet Getaneh

Volume/Issue : Volume 8 - 2023, Issue 10 - October

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The constantly growing topic of inventive vehicle system design is of interest to researchers. The difficulty stems from the ongoing requirement for advancement in vehicle handling, ride comfort, and driving dynamics. The present study proposed a mathematical model for a 4DOF half-car active suspension system (ASS) using a LQR (Linear Quadratic Regulator) controller, based on a control approach for ride comfort and vehicle handling. The task is simulated using MATLAB/Simulink software. The unsprung masses of the wheels' heave displacements, the vehicle's pitching dynamics, and the sprung masses of its body's heave displacements are the regulated parameters. Compared to the antiquated passive suspension technology, its performance is superior (PSS). The simulation uses two bumpy sinusoidal roads and a random road input. Finally, simulation software used to show how well the recommended controller performed. The simulation's outcomes show how this study modelled and control capabilities have improved.

Keywords : Active Suspension, LQR, 4 DOF, MATLAB/Simulink.


Paper Submission Last Date
31 - December - 2023

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