TY - EJOU AU - Lee, Wan-Sul AU - Kwon, Kie-Chan AU - Kim, Bong-Kyu AU - Cho, Ji-Hyon AU - Youn, Sung-Kie TI - Frequency-Shifting Analysis of Electrostatically Tunable Micro-Mechanical Actuator T2 - Computer Modeling in Engineering \& Sciences PY - 2004 VL - 5 IS - 3 SN - 1526-1506 AB - A numerical approach for eigenvalue analysis of the electrostatically tunable micro-mechanical actuators is presented. An efficient algorithm for calculating the natural frequency shifting in the micro-mechanical actuators due to applied DC turning voltage is proposed. In the calculations of the coupled field problem, the three-dimensional FEM/BEM approaches and iterative staggered algorithm are employed. The numerical examples for actually fabricated actuators are presented and the numerical analysis results are compared with experimental data. KW - micro-mechanical actuator KW - electrostatic field KW - natural frequency shifting KW - coupled field analysis DO - 10.3970/cmes.2004.005.279