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Discrete event system fault diagnosis method

A technology of system faults and diagnostic methods, applied in general control systems, control/regulation systems, test/monitoring control systems, etc., can solve time-consuming problems and achieve the effect of low computational complexity

Inactive Publication Date: 2015-07-29
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is quite time consuming to generate such a diagnosis

Method used

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  • Discrete event system fault diagnosis method
  • Discrete event system fault diagnosis method
  • Discrete event system fault diagnosis method

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Embodiment 1

[0033] The present invention provides a discrete event system fault diagnosis method, such as figure 1 , 2 , 3, the method first obtains the observed event sequence of each component, and then obtains the fault events associated with the observed event sequence of each component through the fault system model, and then prunes the fault sequence associated with the fault event. On the basis of the above , according to the pruned fault sequence, fault diagnosis is carried out. In the above process, only the fault events associated with the component observation event sequence are used for fault diagnosis, so most of the fault events can be excluded from the diagnosis, so the calculation complexity of this method is low, and its diagnostic efficiency is higher than that of the existing technology In terms of language, it has been greatly improved.

[0034] The technical scheme adopted is as follows:

[0035]S1. Establish a fault system model, and obtain the observation event s...

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Abstract

The invention relates to a discrete event system fault diagnosis method, which comprises the following steps: S1, a fault system model is built, an observation event sequence of each element of the system is acquired via an observation set, and according to the observation event sequence of each element, fault events related to each element observation event sequence are acquired and recorded via the fault system model; S2, a possible fault sequence of the fault events related to each element is enumerated, a pruning rule is applied, and pruning treatment is carried out on the possible fault sequence of each element; and S3, whether the fault sequence through pruning treatment coincides with an observation event sequence of a corresponding element is judged, and in the case of coincidence, the fault sequence and the corresponding element serve as a diagnosis result to be outputted. According to the method provided by the invention, computation complexity is low, and compared with the prior art, the diagnosis efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of artificial intelligence control, and more specifically, to a fault diagnosis method for a discrete event system. Background technique [0002] Discrete event systems, also known as discrete event systems or discrete event dynamic systems. With the development of science and technology and the gradual improvement of the level of automation, large-scale power grids, communication networks, and intelligent control equipment all use large and complex discrete event systems. Different from the traditional continuous system, the state of the discrete event system does not change continuously with time, but changes at some discrete time points due to some action or event drive. Therefore, its mathematical model is often difficult to express with mathematical equations. [0003] However, the fault diagnosis of discrete event systems is of profound significance. On the one hand, real systems often operate dynamically, and...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0248
Inventor 万海曾娟
Owner SUN YAT SEN UNIV
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