Method for diagnosing faults of pneumatic regulating valve based on particle swarm optimization

A pneumatic control valve, particle swarm optimization technology, applied in the testing of mechanical components, testing of fluid tightness, testing of machine/structural components, etc., can solve problems such as fault state deviation

Active Publication Date: 2018-12-25
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, this method requires a high level of expert knowledge reserves, and for different types of valves, the fault status is different, and only relying on the experience of engineers to diagnose, misdiagnosis and missed diagnosis are serious

Method used

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  • Method for diagnosing faults of pneumatic regulating valve based on particle swarm optimization
  • Method for diagnosing faults of pneumatic regulating valve based on particle swarm optimization
  • Method for diagnosing faults of pneumatic regulating valve based on particle swarm optimization

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Embodiment Construction

[0064] The present invention will be further described below in conjunction with accompanying drawing.

[0065] like figure 1 As shown, a method for fault diagnosis of pneumatic control valve based on particle swarm optimization includes the following steps:

[0066] A. Using adaptive mutation particle swarm algorithm to optimize the diagnostic expert system offline

[0067] A.1. Data collection:

[0068] Install a displacement sensor and a pressure sensor at the reserved place next to the screw cap of the pneumatic control valve and the air supply hole outside the membrane, and give a 4-20mA current input signal according to the percentage step signal, and collect the pressure and displacement data through the data acquisition device. And transmit the collected data to the host computer through serial port communication;

[0069] In this embodiment, the faults of the pneumatic control valve are divided into C=6 types, namely, air leakage fault, foreign matter fault on the ...

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Abstract

The invention discloses a method for diagnosing faults of a pneumatic regulating valve based on particle swarm optimization. By means of a step of adopting an adaptive mutated particle swarm algorithmto optimize a diagnosis expert system offline and a step of diagnosing the faults online, the fault diagnosis accuracy is improved on the basis that the fault self-diagnosis of the pneumatic regulating valve is achieved, the missed diagnosis rate of the faults is reduced particularly, and valve fault operation is avoided; the versatility is good; the general operator can master, so that the automation degree and the intelligent degree of diagnosing the faults of the pneumatic regulating valve are improved.

Description

technical field [0001] The invention relates to the field of valve fault detection and diagnosis, in particular to a method for fault diagnosis of a pneumatic control valve based on particle swarm optimization. Background technique [0002] As the terminal execution equipment of industrial automation control system, pneumatic control valve is widely used in petrochemical, metallurgy, light industry, food and other industries. Its fault detection and diagnosis are related to safety and production. The traditional way of troubleshooting is to check regularly based on experience, which not only wastes a lot of manpower and material resources, but also causes a large number of normal valves to fail due to maintenance and disassembly. [0003] At present, most of the existing online fault detection devices in the market are intelligent locators imported from abroad, and must have a communication protocol and special analysis software, which is high in cost and poor in versatility...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M3/28
CPCG01M3/2876G01M13/00
Inventor 周林娜蒿纪星陈黎明杨春雨张道明王众刘金浩沈乐萍赵建国汪芸
Owner CHINA UNIV OF MINING & TECH
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