LONG Yi-fu1,2,WANG Xi1,2.A Promoted Design Approach for Unknown Input Observer[J].航空发动机,2017,43(5):7-13 |
A Promoted Design Approach for Unknown Input Observer |
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Key Words:UIO fault diagnosis linear correlation sensor |
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Abstract:This paper presents a promoted Unknown Input Observer (UIO) design approach to solve linear correlation problem while
designing UIO. It is a generalized method in UIO designing. Through the linear correlation analysis of measurement output, the measured
output can be reasonable grouping so that each group contains partially linearly independent output and ensure that these groups cover all
the measurement output sensors that need to be diagnosed. Based on those conditions above, the existence condition of those UIOs are met
and they were designed for different groups, those UIOs were used to carry out on the sensor fault diagnosis algorithm. Ultimately, a case
study in aero engine has employed for confirming the feasibility of this new approach. It has been certificated that the new approach has
extensively good engineering application result. |
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