This paper presents a semi-active seat suspension with an electrorheological (ER) fluid damper. A cylindrical ER seat damper is devised on the basis of a Bingham model of an arabic gum-based ER fluid and its field-dependent damping characteristics are empirically evaluated. A semi-active seat suspension is then constructed, and the governing equations of motion are derived by treating the driver mass as a parameter uncertainty. A sliding mode controller, which has inherent robustness to system uncertainties, is formulated to attenuate seat vibration due to external excitations. The controller is then experimentally realized, and controlled responses are presented in both time and frequency domains. In addition, a full-car model consisting of primary, cabin, and seat suspensions is established, and a hardware-in-the-loop simulation is undertaken to demonstrate a practical feasibility of the proposed seat suspension system showing ride comfort quality under various road conditions.
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e-mail: seungbok@inha.ac.kr
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March 2003
Technical Papers
Vibration Control of an ER Seat Suspension for a Commercial Vehicle
S. B. Choi,
e-mail: seungbok@inha.ac.kr
S. B. Choi
Smart Structures and Systems Laboratory, Department of Mechanical Engineering, Inha University, Incheon 402-751, Korea
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J. H. Choi,
J. H. Choi
Smart Structures and Systems Laboratory, Department of Mechanical Engineering, Inha University, Incheon 402-751, Korea
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Y. S. Lee,
Y. S. Lee
Faculty of Mechanical and Automotive Engineering, Keimyung University, Daegu 704-701, Korea
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M. S. Han
M. S. Han
Faculty of Mechanical and Automotive Engineering, Keimyung University, Daegu 704-701, Korea
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S. B. Choi
Smart Structures and Systems Laboratory, Department of Mechanical Engineering, Inha University, Incheon 402-751, Korea
e-mail: seungbok@inha.ac.kr
J. H. Choi
Smart Structures and Systems Laboratory, Department of Mechanical Engineering, Inha University, Incheon 402-751, Korea
Y. S. Lee
Faculty of Mechanical and Automotive Engineering, Keimyung University, Daegu 704-701, Korea
M. S. Han
Faculty of Mechanical and Automotive Engineering, Keimyung University, Daegu 704-701, Korea
Contributed by the Dynamic Systems and Control Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the ASME Dynamic Systems and Control Division, March 1998; final revision, Sept. 2002. Associate Editor: G. Rizzoni.
J. Dyn. Sys., Meas., Control. Mar 2003, 125(1): 60-68 (9 pages)
Published Online: March 10, 2003
Article history
Received:
March 1, 1998
Revised:
September 1, 2002
Online:
March 10, 2003
Citation
Choi, S. B., Choi, J. H., Lee , Y. S., and Han, M. S. (March 10, 2003). "Vibration Control of an ER Seat Suspension for a Commercial Vehicle ." ASME. J. Dyn. Sys., Meas., Control. March 2003; 125(1): 60–68. https://doi.org/10.1115/1.1542639
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