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dc.contributor.authorBohannan, G.W.
dc.contributor.authorSchmidt, V. Hugo
dc.contributor.authorConant, R.J.
dc.contributor.authorHallenberg, J.
dc.contributor.authorNelson, C.
dc.contributor.authorChilds, Ashley E.
dc.contributor.authorLukes, C.
dc.contributor.authorBallensky, J.
dc.contributor.authorWehri, J.
dc.contributor.authorTikalsky, B.
dc.contributor.authorMcKenzie, E.
dc.identifier.citationG.W. Bohannan, V.H. Schmidt, R.J. Conant, J. Hallenberg, C. Nelson, A. Childs, C. Lukes, J. Ballensky, J. Wehri, B. Tikalsky, and E. McKenzie, “Piezoelectric polymer actuators in a vibration isolation application,” Proc. SPIE Conf. on Electroactive Polymer Actuators and Devices (EAPAD), SPIE Vol. 3987, 0277-786X/00, pp. 331-342 (2000).en_US
dc.description.abstractWe present results from development and testing of lightweight actuators made of the piezoelectric polymer PVDF. The prototype being developed is intended for microgravity applications in space and has been tested aboard NASA's Reduced Gravity Platform. The design has been driven by the requirements for a full 3D environment. Incorporation of additional electrical leads into the actuators themselves may remove the need for a separate umbilical to the suspended experiment. Linear equations describing the displacement of piezoelectric bimorphs were developed and applied to the bellows actuator including the epoxy layer. Properties for the piezoelectric layers were obtained from the literature; properties for the epoxy layer were obtained through ultrasonic testing. To assess the validity of the assumed linearity of the actuator, we conducted nonlinear finite element analysis, which indicated a high degree of linearity on contraction and up to a maximum of 5% deviation on expansion to full deflection (about 6 mm). We have developed and tested a proportional-plus-derivative (PD) control system for use with the actuator in 1D using a novel folded pendulum to simulate a zero-g environment. Passive and active characteristics are both in agreement with theoretical predictions.en_US
dc.titlePiezoelectric polymer actuators in a vibration isolation applicationen_US
mus.citation.conferenceSmart Structures and Materials 2000: Electroactive Polymer Actuators and Devices (EAPAD); Yoseph Bar-Cohen; Newport Beach, CA | March 06, 2000en_US
mus.citation.journaltitleProceedings of the SPIE: Smart Structures and Materials 2000: Electroactive Polymer Actuators and Devices (EAPAD)en_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.universityMontana State University - Bozemanen_US

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