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Design method of industrial alarm based on multi-objective optimization and evidence iterative update

A technology of multi-objective optimization and iterative update, applied in the direction of instruments, comprehensive factory control, comprehensive factory control, etc., can solve problems such as the deterioration of alarm performance

Active Publication Date: 2020-07-24
HANGZHOU DIANZI UNIV
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AI Technical Summary

Problems solved by technology

The traditional alarm method adopts the mechanism that the alarm will be issued immediately when the process variable exceeds the threshold, and the alarm will be released immediately when the process variable is lower than the threshold. However, considering other uncertain influencing factors and complex operating conditions in practice, the traditional method cannot handle various uncertainties well. , resulting in poor performance of the alarm

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  • Design method of industrial alarm based on multi-objective optimization and evidence iterative update
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  • Design method of industrial alarm based on multi-objective optimization and evidence iterative update

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Embodiment Construction

[0091] The present invention adopts the evidence fusion technology different from the traditional alarm, and uses the heuristic criterion library to update the reliability of the alarm evidence in real time by combining the alarm evidence with uncertainty obtained at the current moment with the global alarm evidence at all previous moments. Use the fusion rules to fuse the alarm evidence, and optimize other related parameters offline, so as to reduce the influence of uncertainty factors on the alarm performance in practice. The flow chart is as follows: figure 1 shown, including the following steps:

[0092] (1) Set the identification frame of the alarm as Θ={NA,A}, where NA=0 indicates that the equipment is in normal operation, and A=1 indicates that the equipment is in abnormal operation.

[0093] (2) Let the input of the alarm be x, where x(t), t=1, 2, 3..., is the online sequence of the sensor monitoring equipment, t is the sampling time, and the number of samples is deter...

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Abstract

The invention relates to a design method of an industrial alarm based on multi-objective optimization and evidence iterative update, and belongs to the technical field of industrial alarm design. In the method proposed by the invention, a historical data set is firstly converted into alarm evidence with the projection point mapping transformation method; the reliability of the evidence is updatedin real time with a heuristic criterion base; the alarm evidence is fused by using fusion criteria; evidence weight and input reference values are optimized offline with the multi-dimensional bee colony algorithm; and it is determined whether to issue an alarm under the criteria. The invention can effectively reduce the influence of uncertainty and improves the accuracy of the alarm.

Description

technical field [0001] The invention relates to an industrial alarm design method based on multi-objective optimization and evidence iterative update, belonging to the technical field of industrial alarm design. Background technique [0002] Today, with the rapid development of high-tech, informatization has promoted the rapid development of enterprise industrialization, industrialization, and modernization, and all industries are accelerating the pace of informatization. The field of information communication and exchange is also expanding, covering all levels of the workshop, factory and equipment operation process. At the same time, due to the complexity of the industrial production process, the key equipment in the production process has naturally become a key research object. How to monitor the operating status of equipment in real time, and use advanced information processing methods to promptly and quickly discover equipment abnormalities so as to ensure the normal o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02G05B19/418
CPCG05B19/4183G05B23/027G05B2219/31439Y02P90/02
Inventor 徐晓滨张凯翁旭胡燕祝侯平智高海波马枫
Owner HANGZHOU DIANZI UNIV
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