Abstract
A cylindrical shell piezoelectric vibration gyroscope is a kind of Coriolis vibration gyroscope. Its core components are the cylindrical quartz resonator (CQR) and the piezoelectric ceramic electrodes (PCEs). In order to develop a high-precision Cylindrical shell piezoelectric vibration gyroscope, it is very important to reduce the influence of the PCEs and obtain a high-quality-factor CQR. To achieve this goal, a novel high-temperature sintering method is proposed to combine the CQR and the PCEs, and the corresponding sintered resonators are fabricated. After sintering, results of the acoustic excitation experiment and piezoelectric excitation experiment are tested, and the influence of the sintered PCEs on the CQR is determined. A complete gyroscope is obtained by vacuum packaging the sintered resonator. Through the open-loop and closed-loop tests, the performance parameters of gyroscope are obtained. The feasibility of the high-temperature sintering method is proved by experiments.
Highlights
A cylindrical resonator gyroscope (CRG) can detect the angular velocity of the inertial space object by the standing wave precession
To analyze influence of the electrodes sintering on the resonator, the vibration characteristics were obtained by the influence of the electrodes sintering on the resonator, the vibration characteristics were obtained the acoustic excitation experiment
The sound source used the ordinary loudspeaker, the rated by the acoustic excitation experiment
Summary
A cylindrical resonator gyroscope (CRG) can detect the angular velocity of the inertial space object by the standing wave precession. Compared with traditional gyroscopes, such as the mechanical rotor gyroscope and the liquid floated gyroscope, CRG has no rotating parts and avoids mechanical friction, so it has the advantages of low energy consumption, fast start-up, and high stability [1]. The cylindrical resonator is the core component of CRG, which determines the performance of the CRG [4]. Resonators are usually made of metal, ceramics, quartz, or other materials [2,3,4,5,6]. The quartz has excellent isotropy and is an ideal resonator material. By improving the processing technology, the quality factor (Q factor) of cylindrical quartz resonator (CQR) can be better than 8 × 105 in low vacuum [7]
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