Displacement and blocking force modeling for piezoelectric uniflex Microactuators

Hareesh K R Kommepalli, Christopher D. Rahn, Han G. Yu, Susan E. Trolier-McKinstry, Srinivas A. Tadigadapa, Christopher L. Muhlstein

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Microactuators provide controlled motion and force for applications ranging from RF switches to rate gyros. Large amplitude response in piezoelectric actuators requires amplification of their small strain. This paper studies a uniflex microactuator that combines the strain amplification mechanisms of a unimorph and flexural motion to produce large displacement and blocking force. An analytical model is developed with three connected beams and a reflective symmetric boundary condition that predicts actuator displacement and blocking force as a function of the applied voltage. The model shows that the uniflex design requires appropriate parameter ranges, especially the clearance between the unimorph and aluminum cap, to ensure that both the unimorph and flexural amplification effects are realized. With a weakened joint at the unimorph/cap interface, the model accurately predicts the displacement and blocking force of four actuators.

Original languageEnglish (US)
Title of host publication2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008
Pages547-552
Number of pages6
Volume4
StatePublished - 2009
Event2008 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008 - New York City, NY, United States
Duration: Aug 3 2008Aug 6 2008

Other

Other2008 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008
CountryUnited States
CityNew York City, NY
Period8/3/088/6/08

Fingerprint

Microactuators
Amplification
Actuators
Piezoelectric actuators
Analytical models
Switches
Boundary conditions
Aluminum
Electric potential

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Computational Theory and Mathematics
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

Cite this

Kommepalli, H. K. R., Rahn, C. D., Yu, H. G., Trolier-McKinstry, S. E., Tadigadapa, S. A., & Muhlstein, C. L. (2009). Displacement and blocking force modeling for piezoelectric uniflex Microactuators. In 2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008 (Vol. 4, pp. 547-552)
Kommepalli, Hareesh K R ; Rahn, Christopher D. ; Yu, Han G. ; Trolier-McKinstry, Susan E. ; Tadigadapa, Srinivas A. ; Muhlstein, Christopher L. / Displacement and blocking force modeling for piezoelectric uniflex Microactuators. 2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008. Vol. 4 2009. pp. 547-552
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Kommepalli, HKR, Rahn, CD, Yu, HG, Trolier-McKinstry, SE, Tadigadapa, SA & Muhlstein, CL 2009, Displacement and blocking force modeling for piezoelectric uniflex Microactuators. in 2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008. vol. 4, pp. 547-552, 2008 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008, New York City, NY, United States, 8/3/08.

Displacement and blocking force modeling for piezoelectric uniflex Microactuators. / Kommepalli, Hareesh K R; Rahn, Christopher D.; Yu, Han G.; Trolier-McKinstry, Susan E.; Tadigadapa, Srinivas A.; Muhlstein, Christopher L.

2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008. Vol. 4 2009. p. 547-552.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kommepalli HKR, Rahn CD, Yu HG, Trolier-McKinstry SE, Tadigadapa SA, Muhlstein CL. Displacement and blocking force modeling for piezoelectric uniflex Microactuators. In 2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008. Vol. 4. 2009. p. 547-552