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标 题: 1-Dof Bearing Arrangement with Passive Radial Bearings and Highly Efficient Integrated Electrodynamic Dampers, EDD
采用被动径向轴承和高效集成电磁阻尼器(EDD)的单自由度轴承结构
作 者: Torbjorn A. Lembke
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出版年: 2012
会议名: 13th International Symposium on Magnetic Bearings (ISMB 13)
第13届磁悬浮轴承国际研讨会(ISMB 13)
届 次: 13th
摘 要: This paper briefly describes a novel 1-DOF bearing arrangement with integrated passive electrodynamic dampers. A general problem with passive magnetic bearings is that sufficient damping in the radial direction is difficult to provide, without using additional rubber bushings or squeeze film dampers. Electrodynamic damping schemes are sometimes proposed, but they tend to have either weak or nonlinear properties, or they contribute to additional bearing instability in terms of negative stiffness. The proposed bearing arrangement is inherently stable in terms of positive stiffness in radial direction. For dynamic stability it comprehends short circuit coils with geometries that allow for both damping coefficient and cut-off frequency to be chosen at will. A discussion on alternative coil winding schemes and possible active control is done, and finally some preliminary test results from the first prototype are presented, indicating both a stable and a linear behavior.

本文简要介绍了一种新型的一自由度轴承结构,该结构集成了被动式电磁阻尼器。被动磁轴承的一个普遍问题是,在不使用额外橡胶衬套或压膜阻尼器的情况下,难以在径向方向提供足够的阻尼。虽然有时会提出电磁阻尼方案,但这些方案往往具有较弱的阻尼特性或非线性特性,或者会导致负刚度,从而加剧轴承的不稳定性。所提出的轴承结构在径向方向上固有地表现出正刚度,具备良好的动态稳定性。该结构包含短路线圈,其几何形状允许用户自由选择阻尼系数和截止频率。文中还讨论了其他线圈绕制方案以及可能的主动控制方法,并最后展示了首个原型机的初步测试结果,表明其具有稳定且线性的行为表现。
中文内容为网络AI翻译,专业术语未必准确,仅供参考。

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