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High-precision synchronous test method of vibration performance parameters for fused quartz hemispherical resonator
•Each manufacturing process will affect hemispherical resonator vibration performance.•Frequency drift is responsible for the failure of traditional vibration test method.•The envelope of free vibration signal contains information of vibration performance.•Synchronous test of vibration parameters ca...
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Published in: | Measurement : journal of the International Measurement Confederation 2021-11, Vol.185, p.109924, Article 109924 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | •Each manufacturing process will affect hemispherical resonator vibration performance.•Frequency drift is responsible for the failure of traditional vibration test method.•The envelope of free vibration signal contains information of vibration performance.•Synchronous test of vibration parameters can be realized by nonlinear optimization.•Proposed method is suitable for the test of all kinds of axisymmetric resonator.
Hemispherical resonator is a critical component of Hemispherical Resonator Gyro (HRG), and its quality could be evaluated by vibration test. In this paper, a novel synchronous test method is proposed, and the Quality-Factor, Frequency-Split and Rigid-Axis-Angle could be measured simultaneously in a single test. Firstly, the processes influence on resonator is discussed, and the dilemma of traditional test methods is analyzed. Secondly, a Frequency Split Signal model containing resonator vibration performance parameters and its estimation method is proposed. Next, a special resonator vibration performance test system is designed and implemented. Finally, the simulation data and real resonator test results show that the accuracy and efficiency of the proposed method and system are significantly better than traditional methods and can meet the test requirements for large-scale application and manufacturing of HRG. Furthermore, the test method and system implemented can also meet the test requirements for all kinds of axisymmetric shell resonator. |
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ISSN: | 0263-2241 1873-412X |
DOI: | 10.1016/j.measurement.2021.109924 |