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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/933208

Title: Passive shunt damping of a piezoelectric stack nanopositioner
Author/Creator: Eielsen, Arnfinn Aas; Fleming, Andrew J.
Institution: The University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science
Description: The speed and accuracy of nanopositioning systems is heavily influenced by the presence of lightly damped mechanical resonances. In this work, an electrical impedance is connected in series with the driving piezoelectric stack actuator to damp the first mechanical resonance. The electrical shunt is shown to act equivalently to an output feedback controller except that no sensor is required. A simple inductor-resistor shunt circuit is demonstrated to damp the first mechanical resonance of a high-speed nanopositioner by 19.6 dB. The technique of shunt damping is low-cost, simple, guaranteed to be stable, and significantly improves the system response.
Relation: 2010 American Control Conference (ACC 2010). Proceedings of the 2010 American Control Conference (Baltimore, MD 30 Jun - 2 Jul, 2010) p. 4963-4968
Relation: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=5530938
Date: 2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Keyword(s): damping; electric impedance; nanopositioning; piezoelectric actuators
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.13/933208
Identifier: ISBN:9781424474264

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