作者: Anthony Petrovich , Marc S. Weinberg
DOI:
关键词: Capacitive sensing 、 Electrode 、 Vibration 、 Common-mode rejection ratio 、 Sense (electronics) 、 Control theory 、 Materials science 、 Piezoelectricity 、 Optoelectronics 、 Tuning fork 、 Gyroscope
摘要: A resonantly vibrating or tuning fork rate sensor in which a quartz beam is instrumented with electrodes first and second regions forming respective sense drive wherein the piezoelectric resonance affect of material between used as element for an oscillator circuit. The are driven balanced voltage mode sensed common rejection differential amplifier while leads running to along placed at positions minimal field strength improving signal noise ratio device. utilizes multi-electrode pattern order make such lead placement possible. may be either one orientation proximate body resonator body. Both operate on principal, utilizing constriction induce vibration from sensing current generated effect resulting vibrational compression occurs out plane during inertial input. Alternatively, capacitive electrode structure utilized pick-off.