This paper presents the control design and analysis of a non-linear model of a MacPherson suspension system equipped with a magnetorheological (MR) damper. The model suspension considered incorporates the kinematics of the suspension linkages. A state feedback controller is developed using an L 2-gain analysis based on the concept of energy dissipation. The controller is effectively a saturated PID. The performance of the closed-loop system is compared with a purely passive MacPherson suspension system and a semi-active damper, whose damping coefficient is tunned by a Skyhook-Acceleration Driven Damping (SH-ADD) method. Simulation results show that the developed controller outperforms the passive case at the rattle space, tire hop frequencies and the SH-ADD at tire hop frequency while showing a close performance to the SH-ADD at the rattle space frequency. Time domain simulation results confirm that the control strategy satisfies the dissipative constraint.
- Dynamic Systems and Control Division
Nonlinear Disturbance Rejection for Semi-Active MacPherson Suspension System
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Anubi, OM, Crane, CD, III, & Dixon, WE. "Nonlinear Disturbance Rejection for Semi-Active MacPherson Suspension System." Proceedings of the ASME 2012 5th Annual Dynamic Systems and Control Conference joint with the JSME 2012 11th Motion and Vibration Conference. Volume 3: Renewable Energy Systems; Robotics; Robust Control; Single Track Vehicle Dynamics and Control; Stochastic Models, Control and Algorithms in Robotics; Structure Dynamics and Smart Structures; Surgical Robotics; Tire and Suspension Systems Modeling; Vehicle Dynamics and Control; Vibration and Energy; Vibration Control. Fort Lauderdale, Florida, USA. October 17–19, 2012. pp. 513-522. ASME. https://doi.org/10.1115/DSCC2012-MOVIC2012-8702
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