The control of electrostatically actuated microsystems with open-loop strategies has the potential to reduce the switching time with immediate benefits on device performances and, on the other hand, to reduce the impact velocity between electrodes with benefits on the device lifetime and reliability. By applying to micro-electro-mechanical systems (MEMS) the controlled methods already validated on machines, it was demonstrated that the accuracy of the control is scalable with the dimensions. Residual vibrations of microstructures in the nanometer range are almost completely suppressed: they are reduced to 6% of the uncontrolled vibration amplitude. The reasons for implementing this kind of control are related to reliability enhancement, by reducing the impact velocity, and for the improvement of device dynamic performances. The robustness of the control method against errors in dynamic parameters evaluation was also demonstrated.
Preshaping Command Functions to Control the Dynamic Impacts in MEMS
and Aerospace Engineering,
Politecnico di Torino,
Corso Duca degli Abruzzi 24,
Torino 10129, Italy
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received April 14, 2014; final manuscript received September 30, 2015; published online November 4, 2015. Assoc. Editor: Jeffrey F. Rhoads.
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Somà, A., and De Pasquale, G. (November 4, 2015). "Preshaping Command Functions to Control the Dynamic Impacts in MEMS." ASME. J. Vib. Acoust. February 2016; 138(1): 011013. https://doi.org/10.1115/1.4031754
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