Disturbance Attenuation in Fault Detection of Gas Turbine Engines: A Discrete Robust Observer Design

作者：Dai Xuewu^*; Gao Zhiwei; Breikin Tim; Wang Hong

来源：IEEE Transactions on Systems, Man, and Cybernetics - Part C: Applications and Reviews , 2009, 39(2): 234-239.

DOI：10.1109/TSMCC.2008.2005845

• Fast Fourier transformation (FFT)
• fault detection
• gas turbine engine (GTE)
• robust observer design

This study is motivated by the onboard fault detection of gas turbine engines (GTEs), where the computation resources are limited and the disturbance is assumed to be band-limited. A fast Fourier transformation (FFT)-based disturbance frequency estimation approach is proposed and performance indexes are improved by integrating such frequency information. Furthermore, in the left eigenvector assignment, both eigenvalues and free parameters are optimized. As illustrated in the application to the actuator fault detection of a GTE, significant improvements are achieved compared to the existing methods. By combining the frequency estimation and eigenvalue optimization, the main contribution of the paper is the reduction of the computation complexity and the avoidance of the local optimal solution due to fixed eigenvalues.

• 出版日期2009-3
• 单位天津大学; 西南大学