Open AccessAnalysis of Vibration Characteristics of PD Control Active Magnetic Bearing and Cracked Rotor System
Author(s) -
Z. Zhixian,
Jiao Bolong,
Hongping Yuan,
Yixin Liu,
Changsheng Zhu
Publication year - 2019
Publication title -
international journal of engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.225
H-Index - 17
ISSN - 1728-1431
DOI - 10.5829/ije.2019.32.04a.18
Subject(s) - magnetic bearing , helicopter rotor , vibration , rotor (electric) , fault (geology) , bearing (navigation) , control theory (sociology) , finite element method , structural engineering , stiffness , critical speed , engineering , controller (irrigation) , vibration control , harmonic , computer science , mechanical engineering , physics , acoustics , control (management) , geology , agronomy , artificial intelligence , seismology , biology
Crack fault of rotor is one of the most prominent problems faced by magnetic bearing rotor system. In order to improve the safety performance of this kind of machinery, it is necessary to research the vibration characteristics of magnetic bearing cracked rotor system. In this paper, the stiffness model of the crack shaft element was established by the strain energy release rate (SERR) theory. The mathematical model of PD controller of AMBs cracked rotor system is based on the finite element method. The vibration characteristics of PD controller of AMBs rotor system were examined in the test rig under crack depth of rotor. The spectrum of vibration characteristics were detected in the AMBs cracked rotor system. The results of experiments showed that the 2× and 3× harmonic components can be used for fault diagnosis of crack fault of AMBs rotor systems under PD controller of AMB.
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