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Fast contracting polypyrrole actuators
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DOI：10.1016/S0379-6779(00)00195-8.png)
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摘要
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Conducting polymer-based actuators are capable of producing at least 10 times more force for a given cross-sectional area (active stress) than skeletal muscle, and potentially 1000 times more, with strains typically between 1% and 10%. Low operating voltages make them particularly attractive for use in micro-electromechanical systems, in place of electrostatic and piezoelectric actuators. A drawback of conducting polymer actuators is their relatively slow speed, and hence low power-to-mass ratio. In this paper, shaped voltage pulses are applied to generate strain rates of up to 3% s(-1), with peak power to mass ratios of 39 W kg(-1) of polymer, nearly matching mammalian skeletal muscle. Results are obtained from polypyrrole linear and bilayer actuators and employ both liquid and gel electrolytes. (C) 2000 Elsevier Science S.A. All rights reserved.
Keyword:
actuator
polypyrrole
power
strain rate
muscle
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4.6
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1.4W
被引数:
1.3W
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