Modified Skyhook Control of Semi-Active Suspensions: A New Model, Gain Scheduling, and Hardware-in-the-Loop Tuning

[+] Author and Article Information
Keum-Shik Hong

School of Mechanical Engineeringe-mail: kshong@hyowon.pusan.ac.kr

Hyun-Chul Sohn

Department of Mechanical and Intelligent Systems Engineering, Pusan National University, 30 Changjeon-dong, Kumjeong-ku, Pusan 609-735, Koreae-mail: hcson@hyowon.pusan.ac.kr

J. Karl Hedrick

Department of Mechanical Engineering, University of California Berkeley, Berkeley, CA 94720-1740e-mail: khedrick@me.berkeley.edu

J. Dyn. Sys., Meas., Control 124(1), 158-167 (May 01, 2000) (10 pages) doi:10.1115/1.1434265 History: Received May 01, 2000
Copyright © 2002 by ASME
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A schematic diagram of the Macpherson suspension system: 1/4-car model
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A new model including the continuously variable damping force
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Control block diagram of the semi-active suspension system: a road adaptive modified skyhook control
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Damping force characteristics of a typical CVD: comparison between lookup table and polynomial
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Access time comparison: lookup table and polynomial
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Conflicting behavior between the ride comfort and the handling performance of vehicle
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Estimation of the ISO B, C, and D road classes (simulation results): sampling time ΔT=10 msec
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Configuration for the hardware-in-the-loop simulations
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Vertical acceleration comparison between a passive damper and a CVD with the modified skyhook control (experimental results): 1 Hz speed bump
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Current input applied to the CVD in Fig. 10: 1 Hz speed bump
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Tracking performance of the desired damping force: 1 Hz speed bump



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