A NEW CALIBRATION METHOD FOR LOW COST MEMS INERTIAL SENSOR MODULE

Authors

Sheng-Chih Shen, Department of Systems and Naval Mechatronic Engineering, National Cheng Kung University, Tainan 701, Taiwan, R.O.C.Follow
Chia-Jung Chen, Department of Systems and Naval Mechatronic Engineering, National Cheng Kung University, Tainan 701, Taiwan, R.O.C
Hsin-Jung Huang, Department of Systems and Naval Mechatronic Engineering, National Cheng Kung University, Tainan 701, Taiwan, R.O.C

Abstract

This paper presents a new calibration method to overcome the challenges of MEMS inertial sensors for underwater navigation. The MEMS inertial sensor module is composed of an accelerometer, a gyroscope and a circuit of signal process. For navigation estimation, it is easy to be influenced by errors which come from MEMS inertial sensors. In general, the sources of error can be categorized into two groups, deterministic type and stochastic type. The former primarily includes bias errors, misalignment and nonlinearity; the latter contains temperature effect and signal drifting. Subsequently, the linearity calibration is used to modify the deterministic error and the wavelet analysis can suppress the stochastic noise. Therefore, the new calibration method integrated of linearity calibration and wavelet signal processing is utilized to enhance the accuracy and performance of MEMS inertial sensor module. The experimental results demonstrate that the output signal can be corrected suitability by means of the proposed method.

Recommended Citation

Shen, Sheng-Chih; Chen, Chia-Jung; and Huang, Hsin-Jung (2010) "A NEW CALIBRATION METHOD FOR LOW COST MEMS INERTIAL SENSOR MODULE," Journal of Marine Science and Technology: Vol. 18: Iss. 6, Article 5.
DOI: 10.51400/2709-6998.1939
Available at: https://jmstt.ntou.edu.tw/journal/vol18/iss6/5