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美国卫生研究院文献>Sensors (Basel Switzerland)
>Accurate Simulation of Parametrically Excited Micromirrors via Direct Computation of the Electrostatic Stiffness
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Accurate Simulation of Parametrically Excited Micromirrors via Direct Computation of the Electrostatic Stiffness
Electrostatically actuated torsional micromirrors are key elements in Micro-Opto-Electro- Mechanical-Systems. When forced by means of in-plane comb-fingers, the dynamics of the main torsional response is known to be strongly non-linear and governed by parametric resonance. Here, in order to also trace unstable branches of the mirror response, we implement a simplified continuation method with arc-length control and propose an innovative technique based on Finite Elements and the concepts of material derivative in order to compute the electrostatic stiffness; i.e., the derivative of the torque with respect to the torsional angle, as required by the continuation approach.
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