新型工业化
新型工業化
신형공업화
New Industrialization Straregy
2013年
10期
8-15
,共8页
故障监测%基于分割的聚类%共振解调%振动信号
故障鑑測%基于分割的聚類%共振解調%振動信號
고장감측%기우분할적취류%공진해조%진동신호
fault detection%Clustering-based segmentation%resonance demodulation%vibration signal
在传统的共振解调技术中，为了构造一个合适的带通滤波器，机械系统的共振带是必须要知道的。但是，如果所采集的信号被背景噪声和干扰所污染，中心频率和频带就很难识别。本文介绍了一种基于分割的聚类算法。该算法可以自动识别以上参数。然后，就可以采用包络方法对振动信号进行解调。仿真实例证明该算法对高斯噪声和干扰鲁棒性较好。
在傳統的共振解調技術中，為瞭構造一箇閤適的帶通濾波器，機械繫統的共振帶是必鬚要知道的。但是，如果所採集的信號被揹景譟聲和榦擾所汙染，中心頻率和頻帶就很難識彆。本文介紹瞭一種基于分割的聚類算法。該算法可以自動識彆以上參數。然後，就可以採用包絡方法對振動信號進行解調。倣真實例證明該算法對高斯譟聲和榦擾魯棒性較好。
재전통적공진해조기술중，위료구조일개합괄적대통려파기，궤계계통적공진대시필수요지도적。단시，여과소채집적신호피배경조성화간우소오염，중심빈솔화빈대취흔난식별。본문개소료일충기우분할적취류산법。해산법가이자동식별이상삼수。연후，취가이채용포락방법대진동신호진행해조。방진실예증명해산법대고사조성화간우로봉성교호。
Resonance demodulation technique is widely employed in vibration signal analysis. In order to construct a proper bandpass filter, the prior knowledge, i.e., the resonance region of the mechanical system is required in the traditional resonance demodulation method. However, if the collected vibration signal is tainted by the background noise or interference, it is difficult to identify the center frequency and the bandwidth of the filter. This paper introduces a clustering-based segmentation method to determine these parameters automatically. Envelope analysis is then applied to demodulate the vibration data. According to the simulated cases, the presented scheme is robust to Gaussian noise and interferences.
