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An Optimal Suspension for an Automobile on a Random Road
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English
Abstract
Optimal control theory is applied to the design of an active suspension system for a car on a random road. The performance index employed is a weighted sum of mean-squared values for the body forces, tyre dynamic deflections and relative wheel travels. The speed-dependent time delay between the road disturbance inputs is shown not to affect the optimal control law which is linear and time invariant. An explicit expression is obtained for the performance index. The practical realization of the optimal system is discussed and its characteristics compared with those of a conventional passive type suspension system.
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Citation
Thompson, A. and Pearce, C., "An Optimal Suspension for an Automobile on a Random Road," SAE Technical Paper 790478, 1979, https://doi.org/10.4271/790478.Also In
References
- Thompson A.G. “An Active Suspension with Optimal Linear State Feedback” Vehicle System Dynamics 5 1976 187 203
- Thompson A.G. “Quadratic Performance Indices and Optimum Suspension Design” Proc. Inst. of Mechanical Engineers 1973 187 9 129 139
- Kwakernaak H. Sivan R. “Linear Optimal Control Systems” Wiley Interscience 1972
- Anderson B.D.O. Moore J.B. “Linear Optimal Control” Prentice-Hall 1971
- Hedrick J.K. Firouztash H. “The Covariance Propagation Equation Including Time-Delayed Inputs” IEEE Trans. on Automatic Control Oct. 1974 587 589