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《Chinese Journal of Scientific Instrument》 2011-12
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Failure mechanism analysis and transient characteristic simulation of hydraulic electromagnetic valve

Cai Wei,Zheng Xianlin,Zhang Zhili,Huang Xianxiang(Second Artillery Engineering University,Xi'an 710025,China)  
Hydraulic electromagnetic valves are the key components in hydraulic systems,which play the control centrum role in electrical control system and hydraulic system.They are widely used and the failure rate is very high;therefore the diagnosis of electromagnetic valve failure is very important.This paper studies most kinds of failure mechanisms deeply based on collecting and reorganizing common electromagnetic valve failures.Through analyzing common electromagnetic valve failures and characteristic signal measurability,a unique non-intrusive test and diagnostic technique was proposed based on magnetic field and vibration sensitivity.Based on the magnetic circuit analysis and valve core stress analysis in the operation process,the electromagnetic valve transient simulation models were obtained and simulation results were compared with experimental results.This paper lays a solid foundation for quick maintenance of electromagnetic valves.
【Fund】: 总装维改课题([2009]装司62号);; 中国博士后科学基金(20070411115)资助项目
【CateGory Index】: TH137.52
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