A Fault Detection Method of Redundant IMU Using Modified Principal Component Analysis

作者：Lee Wonhee; Park Chan Gook^*

来源：International Journal of Aeronautical and Space Sciences, 2012, 13(3): 398-404.

DOI：10.5139/IJASS.2012.13.3.398

• FDI
• Inertial Sensor
• Redundant IMU
• PCA
• Parity Space

A fault detection process is necessary for high integrity systems like satellites, missiles and aircrafts. Especially, the satellite has to be expected to detect faults autonomously because it cannot be fixed by an expert in the space. Faults can cause critical errors to the entire system and the satellite does not have sufficient computation power to operate a large scale fault management system. Thus, a fault detection method, which has less computational burden, is required. In this paper, we proposed a modified RCA (Principal Component Analysis) as a powerful fault detection method of redundant IMU (Inertial Measurement Unit). The proposed method combines PCA with the parity space approach and it is much more efficient than the others. The proposed fault deception algorithm, modified PCA, is shown to outperform fault detection through a simulation example.

• 出版日期2012-9