电磁轴承-柔性转子系统过一阶弯曲临界转速区的控制器设计及振动特性

打开文本图片集

关键词：电磁轴承；不平衡响应；柔性转子；转子动力学；比例-微分（PD）控制 中图分类号：TB535 文献标志码：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（

主动电磁轴承（activemagnetic bearings，AMBs）具有非接触、无润滑、无磨损、低维护[等优点，在各种高速、高功率的旋转机械中作为支承单元得到广泛的研究和应用。（剩余16323字）