A New Realization Method of Control System for Magnetic Bearing

Abstract:

Aiming at the problems of complex circuit and parameter adjustment in traditional current type power amplifier of Magnetic Bearing (MB), a new realization method of control system based on DSP (Digital Signal Processor) is proposed. The difference with traditional power amplifier is that the current control loop is realized through software in DSP, so some advanced control strategies will be adopted easily, and the control parameters could be modified freely. Besides, the models established in MATLAB using common control strategy and advanced strategy are simulated separately, and the simulation results show the better effect can be obtained with the latter. Finally, the rotor of a 1-DOF MB prototype can be suspended within 0.01mm in the experiment, and the control strategy and parameters can be modified freely by software in DSP.

• Periodical: Applied Mechanics and Materials (Volume 43)
• Pages: 32-35
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.43.32
• Online since: December 2010
• Authors: Wen Yue Zhang, Yan Jun Ge, Jun Yue Yang
• Keywords: Error Analysis, Hysteresis Control, Magnetic Bearing, Power Amplifier, Sample-Hold Strategy

References

[1] X.P. Wang, C.J. Yuan and Y.B. Xie: Journal of Xi'an Jiaotong University Vol. 29(No. 12) (1995), p.68.

[2] M.S. de Queiroz and S. Pradhananga: IEEE Transactions on Control Systems Technology Vol. 15(No. 6) (2007), p.1096.

[3] Z.F. Jiang, C.H. LI, Y.F. Hu, et al: Journal of WUT (Information & Management Engineering) Vol. 26(No. 3) (2004), p.28.

[4] X.M. Zhang, X.L. Wang, Z.J. Qiu, et al: Proceedings of the CSEE Vol. 24(No. 9) (2004), p.168.

[5] L. Zhang and J.C. Fang: Power Electronics Vol. 40(No. 1) (2006), p.1.

[6] X.M. Zhang, X.L. Wang, Z.J. Qiu, et al: Transactions of China Electrotechnical Society Vol. 19(No. 10) (2004), p.168.