On ultrasonic squeeze film levitation: modeling and feedback control of ultrasonic bearing systems

On ultrasonic squeeze film levitation: modeling and feedback control of ultrasonic bearing systems
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超声波挤压油膜悬浮:超声波轴承系统的建模和反馈控制

DOI:
10.1117/12.2010257
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Twiefel
Twiefel
中科院分区:
--
文献类型:
--
作者:
Mojrzisch;Twiefel

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本文介绍了非接触超声挤压油膜悬浮轴承的建模和反馈控制。简单的模型被用来描述悬浮效应,以使其获得广泛的应用。超声换能器是超声悬浮系统中的主要滞后元件。为了分析超声换能器的动态特性,本文采用平均法对换能器的瞬态特性进行了研究。最后给出了整个反馈控制系统的设计。这适用于线性挤压膜悬浮轴承。对于手头的系统的理论模型进行了实验验证。结果表明,理论模型与实验结果吻合较好。
In this paper the modelling and feedback control of non-contact ultrasonic squeeze film levitation bearings are presented. Simple models are employed to describe the levitation effect in order to make it accessible to a wide range of applications. The ultrasonic transducer acts as the dominating lag element in the ultrasonic levitation system. Thus the transient behavior of the ultrasonic transducer is investigated by averaging method in order to analyse the dynamic behavior. Finally the design of the overall feedback control system is presented. This is applied to a linear squeeze film levitation bearing. For the system at hand the theoretical model is validated experimentally. It turns out that the theoretical model is in good agreement with the obtained experimental results.
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