Author： Sohn Hyun-Chul Hong Kyung-Tae Hong Keum-Shik Yoo Wan-Suk
Publisher： Inderscience Publishers
ISSN： 0143-3369
Source： International Journal of Vehicle Design, Vol.34, Iss.4, 2004-05, pp. : 309-326
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Abstract
In this paper, a road-adaptive LQG control for the semi-active Macpherson strut suspension system of hydraulic type is investigated. A new control-oriented model, which incorporates the rotational motion of the unsprung mass, is introduced. A semi-active suspension controller adapting to road variations is proposed. First, based on the extended least squares estimation algorithm, a LQG controller adapting to the estimated road characteristics is designed. Through the computer simulations, the performance of the proposed semi-active suspension is compared with that of a non-adaptive one. The results show better control performance of the proposed system over the compared one.
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