摘要
本文提出了一种电力电子电路故障的在线诊断法。电路的输出波形可以看成由若干段的基本曲线组合而成。这些基本曲线的解析式称之为基函数,可以用相应的矢量表示,因而各种故障波形(正常可看作一种故障特例)可用相应的矢量序列来表示。根据相应于不同序列的语句。就可诊断出该语句所代表的故障属性。
A new on-line fault diagnosis approach is presented for power electronic circuits. In general, waveforms from key points representing the operation state of a power electronic circuit are composed of segments of certain basic curves from a set. The mathematical formula of every basic curve of the set is called basic function. Further a segment of a basic function is able to be depicted by a feature vector. By means of the vector representation every original waveform is tramsformed into vector series which will further be transformed into a sentence. At last faults can be readily recognized by parse anlysis.
出处
《中国电机工程学报》
EI
CSCD
北大核心
1989年第5期22-29,共8页
Proceedings of the CSEE
