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发布时间：2022-11-13

发表时间：2022-10-06

发表刊物：振动与冲击

期号：5

页面范围：40-44

ISSN号：1000-3835

摘要：Piezoelectric self-sensing actuator can be applied in active vibration control. Space-sharing mode is a new way to implement the self-sensing actuator by dividing the electrode of one piezoelectric ceramic wafer into sensing and actuating sections. The actuation and sensing effect of two patterns of the dividing-electrode piezoelectric wafer on the cantilever beam are studied. The frequency responses of such a system under desired operating conditions prove the feasibility of a sensor and an actuator coexisting on a single piezoelectric wafer. Experiment results also show that there is a constant offset in the output of the sensor due to the parasitic actuator-sensor coupling. A method to determine the electrostatic coupling is proposed using the property of beam at the anti-resonant frequencies. Experiments are carried out to measure the electrostatic coupling coefficients under different electrode widths and electrode gaps. The groundwork is established for implementing space-sharing piezoelectric self-sensing in vibration reduction and motion control.

备注：新增回溯数据