A Bistate Control of a Semiactive Automotive Suspension

Paper #:
  • 1999-01-0725

Published:
  • 1999-03-01
Citation:
Mo, C., Sunwoo, M., and Patten, W., "A Bistate Control of a Semiactive Automotive Suspension," SAE Technical Paper 1999-01-0725, 1999, https://doi.org/10.4271/1999-01-0725.
Pages:
9
Abstract:
The purpose of this paper is to develop and experimentally validate a practical and effective technique for the automatic regulation of a hydraulic semiactive vibration absorber (SAVA) for automobiles. The work relies on a consistent hydraulic model of the actuator dynamics that includes the effects of fluid compressibility and a nonlinear viscous loss characteristic. A bistate control algorithm is developed using a Lyapunov approach that seeks to dissipate the energy of the system. The performance of the proposed semiactive damper design on a quarter car model of an automobile suspension is established experimentally on a vibrating test stand. The work provides evidence that the inexpensive hardware design makes it possible to improve the ride and handling performance.
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