【摘 要】
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In turbomachinery design,rotor dynamics analysis is the most important part of the overall design process.Through the rotor dynamics analysis,the critical speed of the rotor can be analyzed,which can
【机 构】
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Institute of Nuclear and New Energy Technology,Collaborative Innovation Center of Advanced Nuclear E
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In turbomachinery design,rotor dynamics analysis is the most important part of the overall design process.Through the rotor dynamics analysis,the critical speed of the rotor can be analyzed,which can define the operating speed range of the rotor.For active magnetic bearing(AMB)-rotor system,the rotor dynamics analysis becomes more important and has some particularities.In addition to the conventional definition and analysis,the rotor dynamics analysis is closely related to the design of the AMBs controller.The AMB-rotor dynamics analysis is not only the design basis of the AMB controller,but also one of the most important judgments of the rotor running state prediction.By using finite element coupled state-space method combined with rotor dynamics and control system design,the similarities and differences between the unbalance response and the closed-loop transfer function of the AMB-rotor in the HTR-PM helium blower are discussed emphatically.The necessity and correctness of the analysis are verified experimentally.The feasibility of using the closed-loop transfer function analysis and test to replace the unbalanced response test process is attempted,thus simplifying the experimental verification process and proving the feasibility through experiments.
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