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首页> 外文期刊>Journal of vibration and control: JVC >Vibration Control of a Suspension System via a Magnetorheological Fluid Damper
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Vibration Control of a Suspension System via a Magnetorheological Fluid Damper

机译：通过磁流变阻尼器控制悬架系统的振动

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摘要

Semi-active control systems are becoming more popular because they offer both the reliability of passive systems and the versatility of active control without imposing heavy power demands. It has been found that magneto-rheological (MR) fluids can be designed to be very effective vibration control actuators. The MR fluid damper is a semi-active control device that uses MR fluids to produce a controllable damping force. The objective of this paper is to study a single-degree-of-freedom suspension system with an MR fluid damper for the purpose of vibration control. A mathematical model for the MR fluid damper is adopted. The model is compared with experimental results for a prototype damper through finding suitable model parameters. In this study, a sliding mode controller is developed by considering loading uncertainty to result in a robust control system. Two kinds of excitations are inputted in order to investigate the performance of the suspension system. The vibration responses are evaluated in both time and frequency domains. Compared to the passive system, the acceleration of the sprung mass is significantly reduced for the system with a controlled MR damper. Under random excitation, the ability of the MR fluid damper to reduce both peak response and root-mean-square response is also shown.
机译：半主动控制系统之所以变得越来越流行，是因为它们既提供了被动系统的可靠性，又提供了主动控制的多功能性，同时又不增加功率需求。已经发现，磁流变（MR）流体可以被设计为非常有效的振动控制致动器。 MR流体阻尼器是一种半主动控制设备，它使用MR流体产生可控制的阻尼力。本文的目的是研究带有MR流体阻尼器的单自由度悬架系统，以进行振动控制。采用了MR流体阻尼器的数学模型。通过找到合适的模型参数，将模型与原型减震器的实验结果进行比较。在这项研究中，通过考虑负载的不确定性来开发一种滑模控制器，以实现鲁棒的控制系统。为了研究悬架系统的性能，输入了两种激励。在时域和频域都评估了振动响应。与无源系统相比，对于带有受控MR阻尼器的系统，簧载质量的加速度显着降低。在随机激励下，还显示了MR流体阻尼器降低峰值响应和均方根响应的能力。

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