TY - GEN
T1 - Accuracy analysis of digital closed-loop quartz flex accelerometer based on differential capacitance detection technology
AU - Zhang, Shengyan
AU - Zhang, Xi
AU - Li, Deyan
PY - 2013
Y1 - 2013
N2 - The digital closed-loop quartz flex accelerometer (DCLA) can acquire higher measuring accuracy, which plays an important role in the inertia navigation system while noise is one of the main factors to restrict the precision of DCLA. In this paper, the working principle and noise characteristics of DCLA are introduced and analyzed. According to the system mathematical transfer function and equivalent noise model, the accuracy caused by each error source is calculated based on the noise transmission and comprehensive rules, and the theoretical accuracy is 12.65μg. Building a DCLA experimental prototype, under the 0g/±1g stability test, the bias stability of 0g/±1g is 17.278μg, 16.629μg and 18.201μg, respectively. The result shows that theoretical analysis is basically in consistent with experimental results, and the error is less than 6μg, which provides the theoretical and practical guidance for improving the accuracy of DCLA. Moreover, the research method can be used for the noise analysis of other weak signal detection system.
AB - The digital closed-loop quartz flex accelerometer (DCLA) can acquire higher measuring accuracy, which plays an important role in the inertia navigation system while noise is one of the main factors to restrict the precision of DCLA. In this paper, the working principle and noise characteristics of DCLA are introduced and analyzed. According to the system mathematical transfer function and equivalent noise model, the accuracy caused by each error source is calculated based on the noise transmission and comprehensive rules, and the theoretical accuracy is 12.65μg. Building a DCLA experimental prototype, under the 0g/±1g stability test, the bias stability of 0g/±1g is 17.278μg, 16.629μg and 18.201μg, respectively. The result shows that theoretical analysis is basically in consistent with experimental results, and the error is less than 6μg, which provides the theoretical and practical guidance for improving the accuracy of DCLA. Moreover, the research method can be used for the noise analysis of other weak signal detection system.
KW - Differential capacitance detection
KW - Digital closed-loop
KW - Noise analysis
KW - Quartz flex accelerometer
KW - Stability test
UR - https://www.scopus.com/pages/publications/84890868306
U2 - 10.1109/ICCIS.2013.58
DO - 10.1109/ICCIS.2013.58
M3 - 会议稿件
AN - SCOPUS:84890868306
SN - 9780769550046
T3 - Proceedings - 2013 International Conference on Computational and Information Sciences, ICCIS 2013
SP - 191
EP - 194
BT - Proceedings - 2013 International Conference on Computational and Information Sciences, ICCIS 2013
T2 - 2013 5th International Conference on Computational and Information Sciences, ICCIS 2013
Y2 - 21 June 2013 through 23 June 2013
ER -