B - Operations – Transporting – 64 – C
Patent
B - Operations, Transporting
64
C
244/63
B64C 17/06 (2006.01) G01C 19/02 (2006.01) G01C 25/00 (2006.01)
Patent
CA 2017726
-16- ABSTRACT OF THE DISCLOSURE A method for adjusting a spinning piezoelectric beam of a dual-axis angular rate sensor, in which the spinning piezoelectric beam is excited in a direction at right angles to the lengthwise direction of two piezoelectric sensors and to a rotary shaft; detected voltages of the two piezoelectric sensors are measured by a signal measuring circuit; a bending portion of at least one of the two piezoelectric sensors is ground so that the levels of the two measured signals and the difference therebetween become small; the spinning piezoelectric beam is excited again in the lengthwise direction of the piezoelectric sensors at right angles to the rotary shaft; detected voltages of the two piezoelectric sensors are measured by the signal measuring circuit; and a weight mounted on the free end of at least one of the two piezoelectric sensors is ground so that the levels of the two measured signals and the difference therebetween become small, Thus, acceleration components applied to the spinning piezoelectric beam, in the detected voltages of the two piezoelectric sensors, are rendered to have the same phase and the same amplitude. On both sides of each piezoelectric sensor there are formed electrodes which are spaced 1.5 times the thickness of the sensor from support washers.
Tamura Toshio
Umemoto Kaneyuki
Yano Teruo
Japan Aviation Electronics Industry Limited
Kirby Eades Gale Baker
Tamura Toshio
Umemoto Kaneyuki
Yano Teruo
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