Charge driven piezoelectric actuators for structural vibration control: issues and implementation
Piezoelectric actuators have been traditionally driven by voltage amplifiers. When driven at large voltages these actuators exhibit a significant amount of distortion, known as hysteresis, which may reduce the stability robustness of the system in feedback control applications. Electric charge is kn...
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Veröffentlicht in: | Smart materials and structures 2005-08, Vol.14 (4), p.575-586 |
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creator | Vautier, B J G Moheimani, S O R |
description | Piezoelectric actuators have been traditionally driven by voltage amplifiers. When driven at large voltages these actuators exhibit a significant amount of distortion, known as hysteresis, which may reduce the stability robustness of the system in feedback control applications. Electric charge is known to reduce the effects of this nonlinearity. To date little research has been done on the coupling between piezoelectric actuators and highly resonant structures when charge is used to drive the actuator. This arrangement was used in a control feedback scheme to reject disturbance vibrations acting on a cantilevered beam. During the analysis it is shown that the dynamics for the coupled 'piezoelectric-beam' system differs depending on whether voltage or charge is used to drive the piezoelectric actuator. Experimental results demonstrating the effectiveness of using electrical charge are included. |
doi_str_mv | 10.1088/0964-1726/14/4/016 |
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subjects | Exact sciences and technology Fundamental areas of phenomenology (including applications) General equipment and techniques Instruments, apparatus, components and techniques common to several branches of physics and astronomy Measurement and testing methods Physics Servo and control equipment robots Solid mechanics Structural and continuum mechanics Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...) |
title | Charge driven piezoelectric actuators for structural vibration control: issues and implementation |
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