Research on a system controller fault detection method based on correlation matrix

TLDR: Based on the correlation matrix, the fault detection method of controller is studied based on the fault diagnosis characteristics of environment control and life support system (ECLSS), combined with the characteristics of actual system fault diagnosis, the reasons for the existence of the feedback loop are analyzed, the different diagnostic effects caused by voltage and current detection methods are compared, and the detection method is proposed as discussed by the authors .

Abstract: In this paper, based on the correlation matrix, the fault detection method of controller is studied based on the fault diagnosis characteristics of environment control and life support system(ECLSS). Combined with the characteristics of actual system fault diagnosis, the reasons for the existence of the feedback loop are analyzed, the different diagnostic effects caused by voltage and current detection methods are compared, and the detection method of breaking the feedback loop by manual testing is proposed. Through modeling and analysis, complete design ideas and methods are provided for improving testability design of controller products, which can help guide Built-In-Test(BIT) design of controllers.