科技通报
科技通報
과기통보
BULLETIN OF SCIENCE AND TECHNOLOGY
2014年
4期
44-46,49
,共4页
非线性时间序列%递归分析%故障检测%特征提取
非線性時間序列%遞歸分析%故障檢測%特徵提取
비선성시간서렬%체귀분석%고장검측%특정제취
nonlinear time series%recurrence analysis%fault detection%feature extraction
提出使用平均互信息算法和虚假最近邻点算法提取非线性时间序列相空间重构的最优化重构参数。在研究递归图算法的基础上,提出使用递归图中的递归率与确定性的比值RAT作为一种新的非线性递归特征量,对其算法进行描述。对涡轮发动机涉及到气缸压缩、供油系统和燃烧室等涡轮机子系统3类典型故障进行了故障诊断实验。仿真实验结果表明,使用RAT特征能有效实现3类故障下的发动机故障的聚类和诊断,故障诊断准确率为95.7%,具有绝对优越的诊断性能,具有较强的工程实践意义。
提齣使用平均互信息算法和虛假最近鄰點算法提取非線性時間序列相空間重構的最優化重構參數。在研究遞歸圖算法的基礎上,提齣使用遞歸圖中的遞歸率與確定性的比值RAT作為一種新的非線性遞歸特徵量,對其算法進行描述。對渦輪髮動機涉及到氣缸壓縮、供油繫統和燃燒室等渦輪機子繫統3類典型故障進行瞭故障診斷實驗。倣真實驗結果錶明,使用RAT特徵能有效實現3類故障下的髮動機故障的聚類和診斷,故障診斷準確率為95.7%,具有絕對優越的診斷性能,具有較彊的工程實踐意義。
제출사용평균호신식산법화허가최근린점산법제취비선성시간서렬상공간중구적최우화중구삼수。재연구체귀도산법적기출상,제출사용체귀도중적체귀솔여학정성적비치RAT작위일충신적비선성체귀특정량,대기산법진행묘술。대와륜발동궤섭급도기항압축、공유계통화연소실등와륜궤자계통3류전형고장진행료고장진단실험。방진실험결과표명,사용RAT특정능유효실현3류고장하적발동궤고장적취류화진단,고장진단준학솔위95.7%,구유절대우월적진단성능,구유교강적공정실천의의。
The average mutual information algorithm and false nearest neighbors algorithm were presented for calculating the optimal parameters of phase space reconstruction. On the basis of recurrence plot, the ratio of recurrence rate to the de-terminism which called RAT in this paper was proposed as a new nonlinear recurrence feature. And the algorithm of RAT was researched in detail. Three typical types of fault such as gas compressor fault, fuel apply fault and burning fault. Simu-lation result shows that the RAT feature can realize the fault diagnosis of engine effectively, and the fault diagnosis preci-sion can reach to 95.7%. According to the research result, it shows predominant performance and good engineering value in application.