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《Chinese Journal of Sensors and Actuators》 2008-12
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Study of Online Oil Monitoring Technology Based on Dielectric Constant Measurement

ZHANG Xiao-fei,YANG Ding-xin,HU Zheng,YANG Yong-min(College of Mechatronics Engineering &Automation,National University of Defense Technology,Changsha 410073,China)  
Engine's malfunction information is contained in the wearing off process of lubricating oil.Meanwhile,the oil's dielectric constant has some change during the wearing out process.The method of online oil monitoring based on dielectric constant measurement is proposed,and the principle for oil monitoring is introduced.Oil monitoring system is also developed,which includes capacitance sensor,tiny capacitance detecting circuit and software of monitoring and analysis.Experiments are carried out on lubricating oil with different contamination.The results show that change of lubricating oil's dielectric constant can be detected effectively and properly,which has some reference meaning in lubricating oil replacing and fault diagnosis.
【Fund】: 部委级国家重点基金项目资助(B2820060069)
【CateGory Index】: TP274.4
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Chinese Journal Full-text Database 1 Hits
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