| 摘要 |
<p>PURPOSE:To obtain a gyro which is small in size and can prevent interference between vibrators, by preventing an oscillation frequency of a vibrator from overlapping with a band of another vibrator from a resonant frequency to an antiresonance frequency. CONSTITUTION:A vibrator 12 contains a vibrating body 14 shaped in a regular trigonal prism and piezoelectric elements 16a, 16b and 16c are formed on three lateral sides of the vibrating body 14. A vibrator 22 is provided in the vicinity of the vibrator 12 and piezoelectric elements 26a, 26b and 26c are formed on its vibrating body 24 as well. For the vibrators 12 and 22, vibrators of which the frequency ranges from a resonant frequency to an antiresonance frequency do not overlap with each other in terms of their frequency-impedance characteristics are used. In other words, the range of the vibrator 12 from the resonant frequency to the antiresonance frequency is lower than the range of the vibrator 22 from the resonant frequency to the antiresonance frequency. According to this constitution, the vibrators 12 and 22 are prevented substantially from interfering with each other, and therefore a vibrating gyro 10 is prevented substantially from interference between the vibrators without using a passive element and an active element, although it is small in size.</p> |
