Numerical algorithm for quasi-static nonlinear simulation of touch-mode actuators with complex geometries and pre-stressed materials
2005 (English)In: Transducers '05, Digest of Technical Papers, Vols 1 and 2, New York: Ieee , 2005, 2119-2122 p.Conference paper (Refereed)
This paper reports on a numerical algorithm for quasistatic dynamic modeling of highly nonlinear electrostatic actuators with single-side clamped moving elements, such as curved-electrode actuators or zipperlike touch-mode actuators. The algorithm is capable of simulating pre-stressed materials and touching surfaces with complex geometries of the moving and the rigid structures, including stoppers and thickness variations of the moving parts. In contrast to conventional, very time-consuming simulation methods, the proposed algorithm takes only a fraction of a second which makes it a very powerful design tool for parameter-optimization of the actuator geometry. The paper describes the algorithm, implemented in MATLAB, and reports on its performance evaluation, comparing its simulation results with those obtained by other methods such as simplified analytical models, FEM/BEM/FCM/BCM-simulations and measurements of fabricated structures, including laterally moving MEMS switches and vertically closing pre-stressed thin-film zipper-actuators. The algorithm shows good agreement with measurements and results obtained by these methods.
Place, publisher, year, edition, pages
New York: Ieee , 2005. 2119-2122 p.
curved-electrode actuator, MEMS simulation, quasi-static modeling, touch-mode actuator, fabrication, mems
IdentifiersURN: urn:nbn:se:kth:diva-13792ISI: 000232189100524ScopusID: 2-s2.0-27544477829ISBN: 0-7803-8994-8OAI: oai:DiVA.org:kth-13792DiVA: diva2:327433
13th International Conference on Solid-State Sensors, Actuators and Microsystems Seoul, SOUTH KOREA, JUN 05-09, 2005
QC 2010-06-262010-06-292010-06-292010-07-01Bibliographically approved