Quick fault detection system for spacecrafts

Abstract

The invention discloses a quick fault detection system for spacecrafts. The quick fault detection system comprises a measurement module, a fault detection and diagnosis module, an interface module and an output module. State signals of sensors can be received by the measurement module and can be inputted into signal conditioning circuits of a LABVIEW platform in the measurement module so as to obtain measurement data of electric analog signals; the measurement data can be received by the interface module and can be integrated according to the time so as to obtain matrix forms; information fusion can be carried out on the integrated measurement data by the fault detection and diagnosis module so that the measurement data can be converted into CLIPS fact structures, eligible measurement data can be deduced by inference machines according to rules of an expert knowledge base, positioning and detection can be carried out by the aid of fault tree rules, and maintenance suggestion can be obtained; positioning and detection results and the maintenance suggestion can be displayed by the output module. The quick fault detection system has the advantages that knowledge is easy to acquire and analyze, and the quick fault detection system is high in rule inference efficiency; effects of predicting faults can be realized according to judgment on current working states of the spacecrafts, accordingly, possible consequence can be eliminated in advance, and the quick fault detection system has low hardware requirements.

Description

technical field [0001] The invention relates to a technology in the field of aerospace measurement and control, in particular to a rapid detection system for spacecraft faults. Background technique [0002] The cost of spacecraft is expensive, and most of them are unique. High reliability is the basic requirement for the operation of spacecraft. At present, the high reliability of spacecraft is generally guaranteed by the high reliability and redundancy of software and hardware. However, due to the complexity of the space environment and the limitations of spacecraft testing, abnormal operation of spacecraft or system failures still occur. In addition, research on spacecraft fault detection technology, in addition to ensuring the safe and reliable operation of spacecraft, is of great significance for reducing the workload of ground staff, training time for astronauts, and launching and operating costs. [0003] Most of the traditional fault detection technologies use a sin...

AI Technical Summary

Problems solved by technology

[0003] Most of the traditional fault detection technologies use a single detection method, but as the structure of the system becomes more and more complex, many fault symptoms are difficult to measure and obtain, and it is difficult to establish a dynamic model for automatic fault detection. Decreased availability of detection methods for analytical models

In view of the intricate relationship between the fault symptoms and the cause of the fault of the aerospace measurement and control system equipment, many fault information is uncertain, and the traditional single fault detection method is difficult to obtain satisfactory detection results

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