電磁軸承-柔性轉(zhuǎn)子系統(tǒng)過(guò)一階彎曲臨界轉(zhuǎn)速區(qū)的控制器設(shè)計(jì)及振動(dòng)特性

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關(guān)鍵詞：電磁軸承；不平衡響應(yīng)；柔性轉(zhuǎn)子；轉(zhuǎn)子動(dòng)力學(xué)；比例-微分（PD）控制 中圖分類號(hào)：TB535 文獻(xiàn)標(biāo)志碼：A DOI：10.16385/j.cnki.issn.1004-4523.202307062

Controller design and vibration characteristics of an active magnetic bearings-flexible rotor system passing the first bending critical speed region

TANG Jiayu，ZHU Changsheng （College of Electrical Engineering，Zhejiang University，Hangzhou 31oo27，China）

Abstract：Activemagnetic bearings（AMBs）areideal bearingsforhighspeedand high powerrotating machineryforitsadjustable stfessanddamp.Inthis paper，adynamic modelofAMBs-flexible rotorsystem is established.Aimingatsuppressngvibration displacementoftherotorsysteminpasingthroughthefirstbendingcriticalspedregionacontrolwhichcombiesadecetralized PIDcontrolleandiputsecondfilterinseries isdesignedandthecontrollrperformances aresimulated.The experiments insimulatedrotationandrealaccelerationoperationsarecarredoutinaplatformofAMBs-flexiblerotorsystem.Therotorsystemcan smoothly passthrough itsfrstbendingcriticalspeedregionandte maximumrotorvibrationdisplacementinacelerationperation islessthanhalfofbackupbearinggap.Therotorvibrationdisplacementandcurrentresponsesoftherotorindiferentunbalances aremeasured inordertoanalysestheinfluenceof therotorunbalanceonvibrationcharacteristicsofAMBs-flexiblerotorsystem.It is shownthattheproposedcontrolercanmaketherotorsystemsmoothlypassthroughitsfirstbendingcricalspeedregion.The rotor imbalance hasasignificantly influenceonthecontrolperformanceandstabiltyofAMBs-flexiblerotorsystem.Theexperi ment results give a support on the high-performance control strategy of AMBs-flexible rotor system.

eywords： active magnetic bearings;unbalance response;flexible rotor;rotor dynamics;PD contr（

主動(dòng)電磁軸承（activemagnetic bearings，AMBs）具有非接觸、無(wú)潤(rùn)滑、無(wú)磨損、低維護(hù)[等優(yōu)點(diǎn)，在各種高速、高功率的旋轉(zhuǎn)機(jī)械中作為支承單元得到廣泛的研究和應(yīng)用。（剩余16323字）