武汉理工大学学报(信息与管理工程版)
武漢理工大學學報(信息與管理工程版)
무한리공대학학보(신식여관리공정판)
JOURNAL OF WUHAN AUTOMOTIVE POLYTECHNIC UNIVERSITY
2014年
2期
167-170
,共4页
张凯%陆百川%马庆禄%刘权富%邓捷
張凱%陸百川%馬慶祿%劉權富%鄧捷
장개%륙백천%마경록%류권부%산첩
交通检测器%小波阈值除噪%多尺度主元分析%故障诊断
交通檢測器%小波閾值除譟%多呎度主元分析%故障診斷
교통검측기%소파역치제조%다척도주원분석%고장진단
traffic detector%wavelet threshold de -noising%MSPCA%fault diagnosis
针对交通检测器故障诊断过程中,噪声掩盖了部分故障信息以及故障信息分布的多尺度性,提出了一种改进的多尺度主元分析( MSPCA)模型。模型首先将交通检测器数据进行分段处理,再加入改进的小波阈值除噪,对滤除噪声后的小波系数进行主元分析,最后利用二维贡献图完成故障的定位。模型应用于线圈检测器的故障诊断实验,与MSPCA及自适应主元分析相比,该模型减小了误报率和漏报率,准确率更高,抗噪能力更强。
針對交通檢測器故障診斷過程中,譟聲掩蓋瞭部分故障信息以及故障信息分佈的多呎度性,提齣瞭一種改進的多呎度主元分析( MSPCA)模型。模型首先將交通檢測器數據進行分段處理,再加入改進的小波閾值除譟,對濾除譟聲後的小波繫數進行主元分析,最後利用二維貢獻圖完成故障的定位。模型應用于線圈檢測器的故障診斷實驗,與MSPCA及自適應主元分析相比,該模型減小瞭誤報率和漏報率,準確率更高,抗譟能力更彊。
침대교통검측기고장진단과정중,조성엄개료부분고장신식이급고장신식분포적다척도성,제출료일충개진적다척도주원분석( MSPCA)모형。모형수선장교통검측기수거진행분단처리,재가입개진적소파역치제조,대려제조성후적소파계수진행주원분석,최후이용이유공헌도완성고장적정위。모형응용우선권검측기적고장진단실험,여MSPCA급자괄응주원분석상비,해모형감소료오보솔화루보솔,준학솔경고,항조능력경강。
During the process of data fault information , it is found that the fault information has a property of multi -scale, and sometimes parts of them are covered by random high frequency noise , so a model of data fault diagnosis based on improved multiscale principal component analysis (MSPCA) was presented.Firstly, an improved wavelet threshold method was joined , which was used to remove most of random high frequency noise and then improved the data confidence .Secondly , the model de-composed the reconstructed signals by principal component analysis .After this, the model finished the mission of the fault isola-tion by two-dimensional contribution plots .Finally, a case study of loop detector data fault diagnosis showed that the model had many advantages such as lower fault and failing rate , and stronger anti-noise ability .