Active fault diagnosis for uncertain systems using optimal test designs and detection through classification

Active Fault Diagnosis Based on Stochastic TestsThe focus of this paper is on stochastic change detection applied in connection with active fault diagnosis (AFD). An auxiliary input signal is applied in AFD. This signal injection in the system will in general allow us to obtain a fast change detection/isolation by considering the output or an error output from the system. The classical cumulative sum (CUSUM) test will be modified with respect to the AFD approach applied. The CUSUM method will be altered such that it will be able to detect a change in the signature from the auxiliary input signal in an (error) output signal. It will be shown how it is possible to apply both the gain and the phase change of the output signal in CUSUM tests. The method is demonstrated using an example.

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Active Fault Diagnosis Based on Consistencies to a Class of Hybrid Systems by Using Genetic Algorithms and Markov Decision Process

2020 IEEE ANDESCON ◽

10.1109/andescon50619.2020.9272124 ◽

2020 ◽

Author(s):

Ivan Escandon ◽

Mariela Cerrada

Keyword(s):

Genetic Algorithms ◽

Fault Diagnosis ◽

Hybrid Systems ◽

Markov Decision Process ◽

Decision Process ◽

Active Fault ◽

Markov Decision

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Design of Automatic Test Platform for the Gyroscope Group Based on Pertinence Matrix

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.556-562.2567 ◽

2014 ◽

Vol 556-562 ◽

pp. 2567-2570

Author(s):

He Jia Li ◽

Xue Wang ◽

Hai Feng Xu ◽

Cheng Yao ◽

Wen Ju Gao ◽

...

Keyword(s):

Fault Diagnosis ◽

Performance Test ◽

Gun Control ◽

Automatic Test ◽

Optimal Test ◽

Fault Dictionary ◽

Dependency Matrix ◽

Optimal Criterion ◽

Test Platform ◽

Test Points

Aiming the problem of the armored vehicle's gun control system that there are many kinds of internal devices, complex fault reasons ,but no all-around and online fault diagnosis and state inspection mean, The automatic test platform for the gyroscope group with performance test and fault diagnosis for component and circuit is designed .The platform based on dependency matrix and optimal criterion of the maximum failure feature information entropy optimize test points ,choose optimal test points design. Performance test module is created and provides test result information for fault dictionary in fault diagnosis module. Automatic test platform is able to locate the circuit component failure.The platform is tested by actual vehicle experiment, and the results prove the reliability and validity of the platform.

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