Abnormality Degree Detection Method Using Negative Potential Field Group Detectors

• Published in: Chinese journal of mechanical engineering 2015-09, Vol.28 (5), p.983-993
• Main Authors: Zhang, Hongli, Liu, Shulin, Li, Dong, Shi, Kunju, Wang, Bo, Cui, Jiqiang
• Format: Article
• Language: English
• Subjects: Algorithms; Computer simulation; Datasets; Detectors; Electrical Machines and Networks; Electronics and Microelectronics; Engineering; Engineering Thermodynamics; Heat and Mass Transfer; Instrumentation; Machines; Manufacturing; Mechanical Engineering; Methods; Monitoring; Potential fields; Power Electronics; Processes; Sensors; Theoretical and Applied Mechanics; 位场; 在线监测方法; 异常状态; 探测器; 检测结果; 监测参数; 监测结果; 设备状态
• ISSN: 1000-9345; 2192-8258
• DOI: 10.3901/CJME.2015.0604.077

Online monitoring methods have been widely used in many major devices, however the normal and abnormal states of equipment are estimated mainly based on the monitoring results whether monitored parameters exceed the setting thresholds. Using these monitoring methods may cause serious false positive or false negative results. In order to precisely monitor the state of equipment, the problem of abnormality degree detection without fault sample is studied with a new detection method called negative potential field group detectors（NPFG-detectors）. This method achieves the quantitative expression of abnormality degree and provides the better detection results compared with other methods. In the process of Iris data set simulation, the new algorithm obtains the successful results in abnormal detection. The detection rates for 3 types of Iris data set respectively reach 100%, 91.6%, and 95.24% with 50% training samples. The problem of Bearing abnormality degree detection via an abnormality degree curve is successfully solved.