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Unbalance and resonance elimination with active bearings on a Jeffcott Rotor

机译：Jeffcott转子上的主动轴承可消除不平衡和消除共振

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摘要

In this contribution we have proven theoretically and practically that active bearings are able to eliminate both bearing forces and the resonance of a Jeffcott Rotor system. Active bearings can displace a rotor such that its center of mass always stays in the rotational center. The proposed collocated controller is able to keep this state at any rotational speed, leading to an elimination of bearing forces and resonances. We analytically demonstrated that the closed-loop system is always stable, even without knowledge of the rotor's properties. The generalization of the proposed control approach for force-free operation either using displacement or force actuators enables its use for all kinds of active bearings. Moreover, the control approach allows a real time estimation of the rotor's eccentricity. The low parameter count and the unproblematic stability behavior qualify the controller for many applications.
机译：在这一贡献中，我们在理论上和实践上证明了主动轴承能够消除轴承力和Jeffcott转子系统的共振。主动轴承可以使转子移位，从而使其质心始终保持在旋转中心。提出的并置控制器能够在任何转速下保持该状态，从而消除了轴承力和共振。我们通过分析证明，即使不了解转子的性能，闭环系统也始终保持稳定。对于使用位移或力致动器的无力操作提出的控制方法的一般化，使其可用于所有类型的主动轴承。而且，该控制方法允许实时估计转子的偏心距。低参数数量和无问题的稳定性能使控制器适用于许多应用。

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