Observer-Based Adaptive L2 Disturbance Attenuation Control of Semi-Active Suspension with MR Damper
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- 作者：Ming-Xing Cheng and Xiao-Hong Jiao
- 刊名：Asian Journal of Control
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：19
- 期：1
- 页码：346-355
- 全文大小：704K
- ISSN：1934-6093
文摘
A novel nonlinear observer-based adaptive disturbance attenuation control strategy was proposed for a quarter semi-active suspension system with a magneto-rheological (MR) damper in light of the intrinsic nonlinearity, parameter uncertainty, state immeasurability and road randomness. Adaptive adjusting parameters were adopted to avoid the curve fitting and identification of the system parameters by a great deal of experimental data for shortening the development cycle of the control system. Based on the reduced-order observer, the system states including the immeasurable virtual state of MR damper and inconveniently measured states of suspension system were estimated for the realistic frame of the proposed controller in practice. The dissipative system theory was utilized to reduce the influence of the road disturbance on the system control performance. Simulation results in the bump road and B-class road indicate that, whether there are perturbations of the system parameters or not, the proposed control scheme always ensures a better performance on the suspension travel, ride comfort and handling stability in comparison with other existing methods.