当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2013年
4期
443-445
,共3页
球磨机%料位测量%噪声%主分量分析
毬磨機%料位測量%譟聲%主分量分析
구마궤%료위측량%조성%주분량분석
Ball mill%Level measurement%Noise%PCA
球磨机已经在工业领域得到了广泛的应用,但磨筒内的料位测量一直是球磨机系统经济运行的制约因素.以噪声信号料位测量方法为依据,研究一种噪声特征频谱的选择方法,经分析得出:通过分析噪声主分量分析的特征向量可以得到有用频段范围为:0~5 kHz;通过原始信号与PCA特征向量变换得到的波形基本一致.
毬磨機已經在工業領域得到瞭廣汎的應用,但磨筒內的料位測量一直是毬磨機繫統經濟運行的製約因素.以譟聲信號料位測量方法為依據,研究一種譟聲特徵頻譜的選擇方法,經分析得齣:通過分析譟聲主分量分析的特徵嚮量可以得到有用頻段範圍為:0~5 kHz;通過原始信號與PCA特徵嚮量變換得到的波形基本一緻.
구마궤이경재공업영역득도료엄범적응용,단마통내적료위측량일직시구마궤계통경제운행적제약인소.이조성신호료위측량방법위의거,연구일충조성특정빈보적선택방법,경분석득출:통과분석조성주분량분석적특정향량가이득도유용빈단범위위:0~5 kHz;통과원시신호여PCA특정향량변환득도적파형기본일치.
Ball mills have been widely used in the industries, but the level measurement of the mill has been the constraint of the economic operation of ball mill system. In this paper, a kind of noise characteristic spectrum selection method based on the noise signal level measurement methodology was researched. The results show that using principal component analysis can get useful frequency range 0~5 kHz;the waveforms obtained by the original signal and the PCA eigenvectors transform are basically the same.
