鼠籠式三相感應(yīng)電機(jī)轉(zhuǎn)子斷條、斷環(huán)在線故障檢測(cè)研究與仿真分析.pdf

1、山東大學(xué)碩士學(xué)位論文鼠籠式三相感應(yīng)電機(jī)轉(zhuǎn)子斷條、斷環(huán)在線故障檢測(cè)研究與仿真分析姓名：趙仁德申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：電機(jī)與電器指導(dǎo)教師：李光友2001.11.15山東大掌碩士學(xué)位論文“j用直接劉電流采樣信號(hào)進(jìn)行FFT的方法(JJ【I矩形窗)進(jìn)行故障特征信號(hào)的提取，不利于判斷閩值的選定，容易造成誤判和漏判，因此必須進(jìn)行改進(jìn)。在深入分析了各種改進(jìn)方法的基礎(chǔ)上，本文給出了適合于本課題信號(hào)提取的改進(jìn)方法：采用Hamming窗抑制旁瓣泄漏，用根據(jù)F

2、T的公式用二：分法或黃金分割法在主瓣內(nèi)搜尋譜峰值以減少柵欄效應(yīng)引起的誤差，實(shí)驗(yàn)結(jié)果驗(yàn)證了該方法的有效性。關(guān)鍵詞：感應(yīng)電機(jī)故障滲斷計(jì)算機(jī)仿真信號(hào)處理頻譜分析AbstractsSquirrelcageinductionmotorsareacriticalcomponentofmanyindustrialprocessesItiSimportanttOmaintainthemhealthyandsafeThebreakageofbarsand

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6、tionshipbetweentheamplitudeof(I2s)fcomponentsinstatorcurrentandthedegreeoftherotorcagefaultisgainedBasedonthetheoryanalysis，athresholdisofferedtodiagnosetherotorcagefaultItsvalidityisprovedbytheresultsofexperimentTherema

7、nyquestionswhenwetrytOtaketheusefulsignaloutofthestatorcurrentusingFFTdirectlyManyimprovedmethodshavebeenanalysedAnewimprovedapproachisdevelopedinthepapertomeettheneedoftheproblemKeyWords：inductionmotorfaultdetectioncomp