一种臭氧发生管故障诊断系统设计研究.pdf

2012 年 12 月机械科学与技术 December 2012
第 31 卷第 12 期 Mechanical Science and Technology for Aerospace Engineering Vol. 31 No. 12
一种臭氧发生管故障诊断系统设计研究
梁晨,史忠科
�, �
西北工业大学自动化学院西安 710072
梁晨
�
摘要针对现有臭氧发生管在故障状况下难以检测处理等问题,设计了一种臭氧发生管故障诊断
系统。该系统通过电流互感器对臭氧发生管在拉弧、击穿、进水等故障状况下进行故障特征提取,
并对各个状态下的实验数据进行分析处理,通过选用合适的隶属度函数建立模糊集合,制定出故障
诊断的判定标准,依据诊断标准对臭氧发生管的工作状态进行实时监测。而对于臭氧发生管在故
障等状态下常常发生电流过大的问题,通过过流保护装置实时监测主电路的电流大小,利用 D 触
发器产生同步信号及时关断功率管,从而避免主电路因电流过大而出现无法恢复的损坏。实验结
果表明在臭氧装置长时间工作状况下,本系统可实时准确地诊断出臭氧发生管的故障,且在故障未
及时处理的情况下主电路不会受到因电流过大而造成的损坏。
�
关键词故障诊断; 特征提取; 模糊集合; 过流保护
��
中图分类号� TM45 文献标识码� A 文章编号� 1003-8728 2012 12-2014-05
Design Research on a Sort of Ozonizer Fault Diagnosis System
,
Liang Chen Shi Zhongke
�, , �
College of Automation Northwestern Polytechnical University Xi'an 710072
�,
Abstract According to the difficult test processing of ozonizer in fault condition at present a sort of ozonizer fault
diagnosis was designed in this paper. Fault feature extraction was got by current transformer when ozonizer in fault
,
conditions such as spark-over breakdown and water influx. Fault diagnosis judge criteria was worked out through
the choice of appropriate membership functions to establish fuzzy set which is based on analyzing and processing ex-
perimental data for each fault state. So the system can monitor the working state of ozonizer in real-time a