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首页> 外文期刊>Journal of intelligent material systems and structures >Active vibration control of a rotor bearing system using flexible piezoelectric patch actuators
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Active vibration control of a rotor bearing system using flexible piezoelectric patch actuators

机译：使用柔性压电贴片致动器的转子轴承系统的主动振动控制

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摘要

Rotor vibration control is crucial for the reliability of rotating machines. This article applies active vibration control to reduce the vibration of a rotor bearing system using flexible piezoelectric patches as actuators mounted on the shaft external surface. The patches reduce the vibration due to unbalance forces by generating bending moments to counteract rotor deformation. An active vibration control system is designed based on a full-state linear quadratic regulator controller. Since proximity probes are used to measure the lateral vibrations of the rotor at few shaft positions, an observer is designed to estimate the unmeasured vibrations. The weighting matrices required by the linear quadratic regulator controller are selected by trial and error so that the displacement amplitudes are reduced to a minimum and the actuation voltages remain within the limitations defined by the manufacturer of the used patches. Simulated responses demonstrate the effectiveness of the designed controller in attenuating the lateral vibration of the rotor bearing system when using two actuating voltages. The vibration response is reduced for the steady-state condition and during run-up particularly at the first critical speed.
机译：转子振动控制对于旋转机器的可靠性至关重要。本文适用有源振动控制，以减少使用柔性压电贴片的转子轴承系统的振动，作为安装在轴外表面上的致动器。通过产生弯矩以抵消转子变形，贴片由于不平衡力而导致的振动减小。基于全态线性二次调节器控制器设计了一个有源振动控制系统。由于接近探针用于在少量轴位置测量转子的横向振动，因此设计观察者以估计未测量的振动。线性二次调节器控制器所需的加权矩阵被试验和误差选择，使得位移幅度减小到最小，并且致动电压仍然在由所用斑块的制造商定义的限制内。模拟响应证明了设计控制器在使用两个致动电压时在转子轴承系统的横向振动中的有效性。振动响应在稳态条件下减小，特别是在第一临界速度下。

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