Abstract
Previous studies have confirmed that an active suspension system with high speed ON/OFF solenoid valves could provide the same vibration isolation efficiency as that of system with pressure proportional valve. In this study, by using Linear—quadratic optimization technique and Kalman filter method, an optimal regulator controller with a state observer was designed for the proposed system. Simulation and experimental research was conducted on a quarter car model. The simulation analysis of the system frequency characteristic suggested that the peak value of magnitude response curve in the case of system with an optimal controller would be lowered significantly, and the experiment results also showed that an improvement in the vibration isolation effect was obtained in using the designed optimal controller over the sky hook damper controller.
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References
Liu Shaojun, Guo Shujuan. Application of high speed ON/OFF solenoid valve to active suspension system. J Cent South Univ Technol (in Chinese), 1996, 27(3): 331–334
Matushita. Optimal control of active air suspension. JSME, Ser C (in Japanese), 1990, 56(526): 1499–1504
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Project supported by the Natural Science Foundation of Hunan Province
Synopsis of the first author Liu Shaojun, associate professor, born on Nov. 14, 1955, majoring in automation and mechanical engineering.
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Liu, S., Zhong, J., Li, Q. et al. Optimal control of an active suspension system employing high speed ON/OFF solenoid valve. J Cent. South Univ. Technol. 4, 137–140 (1997). https://doi.org/10.1007/s11771-997-0016-1
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DOI: https://doi.org/10.1007/s11771-997-0016-1