Author/Authors :
Zhixian, Z College of Mechanical and Control Engineering - Guilin University of Technology, Guilin, China , Bolong, J College of Mechanical and Control Engineering - Guilin University of Technology, Guilin, China , Jiayuan, W College of Mechanical and Control Engineering - Guilin University of Technology, Guilin, China , Yixina, L College of Mechanical and Control Engineering - Guilin University of Technology, Guilin, China , Changsheng, Z College of Electrical Engineering - Zhejiang University, Hangzhou, China
Abstract :
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.
Farsi abstract :
خطاي كرك روتور يكي از مهمترين مشكلات مواجهه با سيستم روتور تحمل مغناطيسي است. به منظور بهبود عملكرد ايمني
اين نوع ماشين آلات، لازم است ويژگي هاي ارتعاشي سيستم روتور شكسته مغناطيسي بررسي گردد. در اين مقاله، مدل سختي
عنصر شفت كراس توسط تئوري انتشار انرژي ( SERR) ايجاد شده است. مدل رياضي كنترل PD از سيستم روتور cracked AMB بر اساس روش المان محدود است. ويژگيهاي ارتعاشي كنترل PD براي سيستم روتور AMBs در محفظه آزمون
تحت عمق روانكاري مورد بررسي قرار گرفت. طيف ويژگيهاي ارتعاش در سيستم روتور ترك خورد شده AMBs تشخيص
داده شد. نتايج آزمايش ها نشان داد كه اجزاي هارمونيك 2 و × 3 مي توانند براي تشخيص خطا از خطاي كرك سيستم هاي ×
روتور AMB تحت كنترل PD براي AMB استفاده شوند .
Keywords :
Active Magnetic Bearings , PD Control , Cracked Rotor , Finite Element Methods
