Improved Accuracy Metallic Resonator CVG
Improved Accuracy Metallic Resonator CVG
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DOI：
10.1109/maes.2009.5109952
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发表时间：
2009-05-01
影响因子：
3.6
通讯作者：
Taturin, V. N.
中科院分区：
文献类型：
--
作者：
Chikovani, V. V.;Yatsenko, Yu. A.;Taturin, V. N.
金属谐振器Q因子对谐振器的材料、其热处理和化学处理、设计和环境非常敏感;即，压力和温度。谐振腔质量对角速率敏感性、振动稳定性、对环境条件变化的响应以及抗外界振动和冲击等方面起着非常重要的作用。Innalabs控股公司使用圆柱形谐振器，其边缘厚度增加到2 mm或更大。这涉及谐振器材料和设计参数选择、材料热处理以增加谐振器Q因子以及改进的控制算法以增加金属CVG精度。结果，CVG偏置不稳定性为0.025度/小时和随机游走为0.008度/小时的谐振器直径43毫米，和0.2度/小时的谐振器直径25毫米。本文还讨论了Innalabs CVG的未来机会。给出了CVG 43和CVG 25的测试结果。预测了单DSP Sharc控制下的三轴CVG单元和IMU的参数。
Metallic resonator Q-factor is very sensitive to the resonator's material, its thermal and chemical treatment, design, and environment; i.e., pressure and temperature. In order to obtain higher accuracy for CVG it is necessary to use resonator evacuation.Resonator mass plays a very important role in sensitivity to angle rate, in stability of vibration, in response to environmental condition changes, and also to external vibration and shock resistance. Innalabs Holding Inc. uses a cylindrical resonator with increased rim thickness of up to 2 mm and more.This concerns resonator material and design parameters selection, material thermal treatment to increase resonator Q-factor, and improved control algorithms in order to increase metallic CVG accuracy. As a result, CVG bias instability of 0.025 deg/h and random walk of 0.008 degvh for the resonator diameter 43 mm, and 0.2 deg/h for the resonator diameter 25 mm were obtained. Future opportunities for Innalabs CVG is also discussed herein.Test results are presented for CVG43 and CVG25. Three-axis CVG unit under control of one DSP "Sharc" and IMU parameters are forecasted.