Due to very low power throughput and behavior as primarily capacitive loads, voltage conversion for micro-scale piezoelectric and electrostatic actuators can be very inefficient, while analog drive circuit supply currents may also exceed actuator power consumption. When limited instead to switching commands at discrete time instants to control micro-actuator motion, it may be advantageous to coordinate operating periods of any voltage conversion circuitry with actuators. A sample scenario of a traditional boost converter driving a thin-film piezoelectric micro-robotic appendage along a trajectory is considered through simulation studies. Some ranges of target motion accuracy are achieved using less energy, up to a 25% reduction at 30 V, for a 4 V battery, when coordinating voltage converter operation, even when conversion efficiency is very low.
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ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control
October 31–November 2, 2011
Arlington, Virginia, USA
Conference Sponsors:
- Dynamic Systems and Control Division
ISBN:
978-0-7918-5476-1
PROCEEDINGS PAPER
Coordinated Voltage Conversion and Low-Power Micro-Actuator Switching
Kenn Oldham,
Kenn Oldham
University of Michigan, Ann Arbor, MI
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Biju Edamana,
Biju Edamana
University of Michigan, Ann Arbor, MI
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Bongsu Hahn
Bongsu Hahn
University of Michigan, Ann Arbor, MI
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Kenn Oldham
University of Michigan, Ann Arbor, MI
Biju Edamana
University of Michigan, Ann Arbor, MI
Bongsu Hahn
University of Michigan, Ann Arbor, MI
Paper No:
DSCC2011-6150, pp. 33-40; 8 pages
Published Online:
May 5, 2012
Citation
Oldham, K, Edamana, B, & Hahn, B. "Coordinated Voltage Conversion and Low-Power Micro-Actuator Switching." Proceedings of the ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control. ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control, Volume 2. Arlington, Virginia, USA. October 31–November 2, 2011. pp. 33-40. ASME. https://doi.org/10.1115/DSCC2011-6150
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