Noise Characteristics of MEMS Gyro’s Null Drift and Temperature Compensation
學年 101
學期 1
出版(發表)日期 2012-09-01
作品名稱 Noise Characteristics of MEMS Gyro’s Null Drift and Temperature Compensation
作品名稱(其他語言)
著者 Shiau, Jaw-Kuen; Huang, Chen-Xuan; Chang, Ming-Yu
單位 淡江大學航空太空工程學系
出版者 Taipei: Tamkang University
著錄名稱、卷期、頁數 Journal of Applied Science and Engineering 15(3), pp.239-246
摘要 Gyroscope is one of the primary sensors for air vehicle navigation and controls. This paper investigates the noise characteristics of microelectromechanical systems (MEMS) gyroscope null drift and temperature compensation. This study mainly focuses on temperature as a long-term error source. An in-house-designed inertial measurement unit (IMU) is used to perform temperature effect testing in the study. The IMU is placed into a temperature control chamber. The chamber temperature is controlled to increase from 25 C to 80 C at approximately 0.8 degrees per minute. After that, the temperature is decreased to -40 C and then returns to 25 C. The null voltage measurements clearly demonstrate the rapidly changing short-term random drift and slowly changing long-term drift due to temperature variations. The characteristics of the short-term random drifts are analyzed and represented in probability density functions. A temperature calibration mechanism is established by using an artificial neural network to compensate the long-term drift.With the temperature calibration, the attitude computation problem due to gyro drifts can be improved significantly.
關鍵字 MEMS Gyroscope;Null Drift;Inertial Measurement Unit;Temperature Compensation
語言 en
ISSN 1560-6686
期刊性質 國內
收錄於 EI
產學合作
通訊作者 Shiau, Jaw-Kuen
審稿制度
國別 TWN
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/83717 )

機構典藏連結