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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 3    March 2016

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A novel ring vibrating gyroscope based on side piezo-electrodes
ZHOU Xin(周鑫)1, WU Yu-lie(吴宇列)1, WU Xue-zhong(吴学忠)1, ZHANG Yong-meng(张勇猛)1, ZHENG Yu(郑煜)2

1. College of Mechatronics Engineering and Automation,
National University of Defense Technology, Changsha 410073, China;
2. State Key Laboratory of High Performance Complex Manufacturing
(Central South University), Changsha 410083, China

Abstract:Solid-state wave gyroscope is one kind of high-performance vibrating gyroscopes. The present work develops a new type of solid-state wave gyroscope—a ring vibrating gyroscope driven by piezo-electrodes located on the sidewall of the structure. It has advantages of large vibrating amplitude, high energy conversion efficiency and compact structure. The working principle of the piezoelectric ring vibrating gyroscope is based on the inertia effect of the standing wave in the axisymmetric resonator caused by Coriolis force. The finite element method (FEM) analysis has been implemented to characterize the ring type resonator. The prototypal gyroscope was manufactured and has been trimmed by mechanical way. The harmonic response of the ring vibrating gyroscope has been tested. The resonating frequency of the ring type resonator is 3715.6Hz and the frequency split of the two working modes before trimming was about 5Hz and was reduced to sub-0.01Hz after trimming procedure. The Q-factor of the ring type resonator was 2504. Then, the turntable experiment was implemented. The measured scale factor k is 9.24mV/[(°)?s] and the full scale range of the gyroscope is larger than ±300 (°)/s.

 

Key words: solid-state wave gyroscope; piezoelectric gyroscope; side drive; ring vibrating gyroscope

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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