A Novel Optimal Configuration form Redundant MEMS Inertial Sensors Based on the Orthogonal Rotation Method

Sensors

Jianhua Cheng¹  Jinlu Dong¹  Rene Jr. Landry² 

[1] Marine Navigation Research Institute, College of Automation, Harbin Engineering University, Harbin 150001, China; E-Mails:;LASSENA Laboratory, Ecole de Technologie Superieure, 1100 Notre-Dame Street West, Montreal, QC H3C 1K3, Canada; E-Mail:

关键词: MEMS;    redundancy configuration;    reliability;    navigation accuracy;    FDI;   

DOI  :  10.3390/s140813661

来源: mdpi

【 摘 要 】

In order to improve the accuracy and reliability of micro-electro mechanical systems (MEMS) navigation systems, an orthogonal rotation method-based nine-gyro redundant MEMS configuration is presented. By analyzing the accuracy and reliability characteristics of an inertial navigation system (INS), criteria for redundant configuration design are introduced. Then the orthogonal rotation configuration is formed through a two-rotation of a set of orthogonal inertial sensors around a space vector. A feasible installation method is given for the real engineering realization of this proposed configuration. The performances of the novel configuration and another six configurations are comprehensively compared and analyzed. Simulation and experimentation are also conducted, and the results show that the orthogonal rotation configuration has the best reliability, accuracy and fault detection and isolation (FDI) performance when the number of gyros is nine.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.