A piezoelectric element can be used separately as a sensor or an actuator. A self-sensing strategy based on a charge driver can utilize a piezoelectric element as a sensor while actuating. The strategy was proven via experiments on a cantilever vibrator using a piezoelectric plate with both sensing and actuating functions. The amplitude of the vibration was actively damped by a factor exceeding 90%. The method can be used in numerous fields, including scanning probe microscopy, vibration suppression, and monitoring the health of structures.
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Note: Self-sensing based on charge control improves the performance of active damping using piezoelements
Liu, Yong Bin; Zhang, Lian Sheng; Feng, Zhi Hua
Follow Review of Scientific Instruments
, Volume 83 (2)
American Institute of Physics – Feb 1, 2012
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