Comparison of adaptive LQG and nonlinear controllers for vehicle suspension systems

Gordon, T. J. and Marsh, C. and Milsted, M. G. (1991) Comparison of adaptive LQG and nonlinear controllers for vehicle suspension systems. Vehicle System Dynamics, 20 (6). pp. 321-340. ISSN 0042-3114

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Item Type:Article
Item Status:Live Archive

Abstract

A design feature of many computer-controlled suspension systems, is their ability to adapt control law parameters to suit prevailing road conditions. Here, for systems employing high bandwidth actuators and state variable feedback control, the benefits of such adaptation are shown to be at best marginal. An optimal adaptive LQG system is compared with a fixed structure nonlinear feedback controller in the context of a simple quarter-vehicle suspension model. Performance comparisons are made, and trends considered under more realistic conditions. In consequence the overall usefulness of this type of adaptation is called into question.

Keywords:Control Systems, Adaptive - Optimization, Adaptive LQG Controllers, Nonlinear Controller Analysis, Optimal Adaptive LQG System, Quarter-Vehicle Suspension Model, Variable Feedback Control, Vehicle Suspension Systems, Vehicles
Subjects:H Engineering > H660 Control Systems
H Engineering > H330 Automotive Engineering
Divisions:College of Science > School of Engineering
ID Code:11700
Deposited On:01 Oct 2013 17:55

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