Study of a High Sensitivity Transverse Comb-Drive As Small Force Sensor
محل انتشار: بیست و یکمین کنفرانس مهندسی برق ایران
سال انتشار: 1392
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 984
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شناسه ملی سند علمی:
ICEE21_392
تاریخ نمایه سازی: 27 مرداد 1392
چکیده مقاله:
A MEMS based capacitive sensor for high sensitivity micro-force measurement is proposed and discussed. A 3Dmodel is considered for only one equivalent capacitance, whichresulted outputs can be extracted to the entire device, when multiplied by the number of the combs. The effects of varioussemiconductors as the base material are studied and the output results are compared. The ratio of the calculated differential capacitance to the value of applied force is suggested as the device sensitivity. It is resulted that Gallium Arsenide has faster response and higher resolution in an equal bias voltage range.The suggested comb-drive sensor could be used to measure the input applied force lower than 0.32 milli-Newton, with thesensitivity higher than 3.14 fF/mN. The device sensitivity can be enhanced again with increasing the number of combs
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