異(yi)步電(dian)(dian)機(ji)的(de)振(zhen)動是(shi)目前電(dian)(dian)機(ji)結構(gou)設(she)計較關注(zhu)的(de)問題，分別(bie)由(you)電(dian)(dian)磁振(zhen)動、機(ji)械振(zhen)動、氣體振(zhen)動三部分組成(cheng)。

電(dian)磁振動：是(shi)由電(dian)機氣隙中磁場的(de)相互作用，在轉子和定子上產(chan)(chan)生隨時間(jian)和空(kong)間(jian)變化(hua)的(de)電(dian)磁力(li)，使電(dian)機產(chan)(chan)生振動。

機(ji)(ji)械振動(dong)(dong)：是(shi)由轉(zhuan)子的不平衡、軸承等機(ji)(ji)械結構或裝(zhuang)置引起的振動(dong)(dong)。

氣(qi)體(ti)振動：是由電機通(tong)風部件中的(de)空氣(qi)流動或由空氣(qi)動力引起的(de)振動。

異步電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)振(zhen)(zhen)動(dong)是(shi)(shi)許多大中型電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)主要振(zhen)(zhen)動(dong)源。由于(yu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)振(zhen)(zhen)動(dong)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)場和(he)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)結構(gou)相互作用(yong)的(de)(de)(de)結果，那么(me)利用(yong)磁(ci)(ci)-固耦合振(zhen)(zhen)動(dong)理論來(lai)研究(jiu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)振(zhen)(zhen)動(dong)是(shi)(shi)尋(xun)找電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)振(zhen)(zhen)動(dong)產生機(ji)(ji)(ji)理以(yi)(yi)及(ji)解決電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)振(zhen)(zhen)動(dong)較有效的(de)(de)(de)方(fang)法(fa)。由于(yu)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)力是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)振(zhen)(zhen)動(dong)的(de)(de)(de)激勵源，其計算的(de)(de)(de)精(jing)度決定了電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)振(zhen)(zhen)動(dong)的(de)(de)(de)計算精(jing)度，所以(yi)(yi)目(mu)前在電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)振(zhen)(zhen)動(dong)的(de)(de)(de)研究(jiu)中大多采用(yong)數值(zhi)分析法(fa)來(lai)計算電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)力。

在電(dian)機結構振(zhen)動噪聲計算分析中，主要包含以下幾個部分：

動(dong)力學分(fen)析(xi)：包(bao)括模態分(fen)析(xi)，諧(xie)響應分(fen)析(xi)，轉子(zi)振動(dong)分(fen)析(xi)，轉子(zi)、定子(zi)、機座耦合振動(dong)分(fen)析(xi)，定子(zi)及底座振動(dong)分(fen)析(xi)，共振、臨界轉速分(fen)析(xi)，瞬態響應特性。

噪聲(sheng)(sheng)分析(xi)：由電機振動引起的振動噪聲(sheng)(sheng)、電機風扇引起的氣動噪聲(sheng)(sheng)等。

多物(wu)理場耦(ou)合分析：電機(ji)電磁、熱(re)、流體(ti)、結(jie)構(gou)相互作(zuo)用。