EAP ACTUATOR AND DRIVE METHOD
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United States of America Patent
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Issued Date -
Oct 24, 2019
app pub date -
Jun 28, 2017
filing date -
Jun 29, 2016
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Abstract
An electroactive polymer actuator comprises an electroactive polymer structure and a driver for providing an actuation drive signal. In one aspect a first drive signal with an overdrive voltage is used to change the charge of the electroactive polymer structure needed for switching the structure from one to another actuation state. When or after the electroactive polymer structure actuation is near or at the another actuation state, a drive voltage is used to bring to and hold the electroactive polymer structure at the actuated state. This temporary overdrive scheme improves the speed response without damaging the electroactive polymer structure.
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