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TECHNICAL PAPERS

Nonlinear Model Reduction for Dynamic and Automotive System Descriptions

[+] Author and Article Information
Zeyu Liu, John Wagner

Automotive Research Laboratory, Department of Mechanical Engineering, 212 Fluor Daniel Engineering Building, Clemson University, Clemson, SC 29634-0921

J. Dyn. Sys., Meas., Control 124(4), 637-647 (Dec 16, 2002) (11 pages) doi:10.1115/1.1515327 History: Received June 01, 2001; Revised January 01, 2002; Online December 16, 2002
Copyright © 2002 by ASME
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Figures

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Model reduction strategies for linear and nonlinear systems
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Balanced realization based model reduction method
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Empirical gramian balancing method for nonlinear systems
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Vehicle suspension system with sprung and unsprung masses
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Comparison of the nonlinear and linearized full-order systems for the vehicle suspension (solid: nonlinear; dashed: linearized)
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Transient response of the linearized full-order and reduced-order systems for the vehicle suspension (solid: full-order; dashed: reduced-order)
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Summary of the vehicle suspension system transient responses (solid:full-order nonlinear; dashed: reduced nonlinear; dash-dot: reduced linear)
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Exhaust gas recirculation (EGR) valve schematic
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Comparison of the nonlinear and linearized full-order systems for the EGR valve (solid: nonlinear; dashed: linearized)
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Transient response of the linearized full-order and reduced order systems for the EGR valve (solid: full-order; dashed: reduced-order)
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Summary of the exhaust gas recirculation valve transient responses (solid: full-order nonlinear; dotted: reduced nonlinear; dash-dot: reduced linear)
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Powertrain control systems functions

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