Abstract:
Because active magnetic bearing could support and inspire the rotor with contactless electromagnetic force, some data in the frequency domain are acquired when the inspired sinusoid sweeping frequency signals are input into the rig, which is an experiment model of the helium turbine rotor in the high temperature, air-cooled reactor （HTR）. With the method of modal analysis, the transfer function and modal shapes are drawn. These results not only could verify the theoretic: analysis result, but also could be provided for the controller design and system failure diagnosis.
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