径向主动式电磁轴承及其数字控制系统的研究
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摘要
电磁轴承是一种利用磁场力将转子稳定悬浮在空中的一种新型机电产品,它具有无摩擦、无润滑、允许转速高、动态特性可调整等优点,越来越受到科技界和企业界的重视。电磁轴承的应用是一种高新技术,涉及到电磁学、机械学、转子动力学、控制理论和计算机科学等众多领域。
     本文分析了电磁轴承的工作原理,其中检测部分采用无传感器转子位移自检测模式,这样既减少了成本,也优化了控制性能,是未来的发展方向之一。之后推导了单自由度情况下电磁力与转子位移之间的关系,建立了其数学模型。对此模型分别采用传统的PID控制和改进的控制方法,在Matlab平台上进行仿真,并对二者的仿真结果进行了分析。比较发现,改进后的控制由于结合了模糊控制和PID控制,能使系统响应的超调量减小,反应时间加快,而且可对参数进行自适应调整,对电磁轴承等非线性系统有非常好的控制效果。
     在硬件仿真方面,首先由模拟对象电路板将被控电磁轴承转换为相应的模拟对象,再用控制器电路板对其进行控制,两块电路板均采用了C8051F120芯片,最后将控制结果输入到上位机进行观察。发现控制效果与Matlab的仿真效果相近,可以满足磁悬浮轴承的性能要求。
Active magnetic bearings(AMB) is a new kind of product applied in rotating machinery ,which can use controllable electromagnetic force to support a rotor freely. Compared with the conventional rolling element or journal bearings,it is non-friction and need no lubrication even when operating in high speed ,and its dynamical property is adjustable,so it attract the attention of science and enterprise fields.The application of AMB is high technology which concerning many fields such as magnetics , mechanics, rotor dynamics , control theory and computer science.
    This paper analyses the working principle of AMB firstly , then derive the relationship between electromagnetical power and rotor displacement under the single degree of freedom,and a mathmatical model is established at last.In control system, the monitoring part use no sensor but electromagnet itself to monitor the rotor displacement.This is a trend in AMB development because it not only cut down whole cost but also optimize control effect.As for the mathmatical model,there were two control algorithms.One is conventional PID and the other is improved one which combines the advantages of PID and fuzzy controller. Because of the advantages, it make overshooting number smaller and reaction time shorter ,also can adjust the parameter by itself, so this algorithms is very suitable for non-linear system.
    After simulinking on matlab platform, simulating on real hardware is needed. First of all, the controlled object of AMB can be transformed into simulative object by an electrical circle board , then use another one to control the simulative object. The two electrical circle boards also use the chip C8051F120. The results putting in computer show that the control effect is almost same as simulinking on matlab and can meet the need of AMB control system.
引文
[1] 张小建.主动磁悬浮轴承数字控制系统的研究[D].南京:南京航空航天大学,2002
    [2] G.施韦策等.主动磁轴承基础、性能及应用[M].北京:新时代出版社,1997.3
    [3] 吴昊天.电磁轴承PID控制器的参数分析及鲁棒控制器设计[D].西安:西北工业大学,2003
    [4] Moon F C. Magento-soldmechanics. New York: Comell university, 1984
    [5] 谢黎.磁悬浮轴承控制器的研究与实现[D].南京:航空航天大学,2002
    [6] W. P. Kelleher, A. s. Kondoleon. A Magnetic Bearing Suspension System for High Temperature Gas Turbine Applications[J]. Proceedings of MAG' 97: 15-24
    [7] Michel Dussaux. The Industial Applications of The Active Magnetic Bearings Technology[D]. Proceedings of The 2nd International Symposium on Magnetic Bearing. July, 1990, Tokyo, Japan.
    [8] James R. scholten. A Magnetic Bearing Suspension System for High Temperature Gas Turbine Applications[D]. - Control System Design.
    [9] 张钢,虞烈,谢友柏.电磁轴承的发展与研究[J].轴承.197,(10):13~17
    [10] 刘迎澎,黄阳,磁悬浮轴承研究综述.机械工程学报[J].2000,36(11):5~9
    [11] Guang-ren Duan, David Howe. Robust Magnetic Bearing Control via Eigenstructure Assignment Dynamical Compensation [J]. IEEE Transactions on Control Systems Technology, 2003, 11(2): 96~105
    [12] 施阳,周凯,严卫生等.主动磁悬浮轴承控制技术综述[J].机械科学与技术.1998,17(4):580~582
    [13] 沈钺,刘钢.四自由度磁轴承—转子系统的数学模型[J].矿山机械.2000,(8):53~54
    [14] Tomaki Takami, Michihiro Kawanishi, Hiroshi Kanki. Adbanced Control for Actice Magnetic Bearing[D]. Proceeding soft he Eighth Internationa Symposium on Magnetic Bearings. August, 2002
    [15] 赵艾萍,谢友柏.弹性转子—电磁轴承系统的建模与控制[J].中国机械工程,2000,11(12):1332~1334
    [16] 唐钟麟,电磁轴承柔性转子系统分析方法[J].机械工程学报,1999, 35(2):97~100
    [17] 丁刚,张曾科,韩增晋.非线性系统的鲁棒自适应模糊控制[J].自动化学报,2002,28(3):356~362
    [18] 李大中,刘淑平.采用H_∞控制理论实现的弹性转子系统振动控制[J].机械科学与技术,1999,18(7):525~528
    [19] Michels K. A model-based fuzzy controllers[J]. Fuzzy sets and Systems, 1997(85): 223~232
    [20] Jeffrey D. Lindlau, Carl R. Knospe. High Performance Voltage Control Using Feedback Linearization[J]. Proc. of the Seventh International Symp. On Magnetic Bearing, ETH, Zurich, 2000: 269~274
    [21] 虞烈.可控磁悬浮转子系统[M].北京:科学出版社,2003.8
    [22] Takeshi Mizuno, Yuichiro Takemori. A Unified Transfer Function Approach to Control Design for Virtually Zero Power Magnetic Suspension. Proc. of the Seventh International Symp[J]. on Magnetic Bearings, ETH, Zurich, 2000: 45~50
    [23] Beat Aeschlimann, Matthias Kummerle, Jurjen Zoethout, et al. Model Based Control of a Disc Rotor on Active Manetic Bearings[J]. Proc. of the Seventh International Symp. on Magnetic Bearings, ETH, Zurich, 2000: 245~250
    [24] 胡业发,周祖德,江征风.磁力轴承的基础理论与应用[M].北京:机械工业出版社,2006
    [25] 赵雷,徐旸,时振刚等.磁悬浮轴承研究进展:暨第一届中国电磁轴承学术会议论文集[M].北京:原子能出版社,2005
    [26] 何平,王鸿绪.模糊控制器的设计及应用[M].北京:科学出版社,1997
    [27] 张曾科.模糊数学在自动化技术中的应用[M].北京:清华大学出版社,1997
    [28] 涂植英,朱麟章.过程控制系统[M].北京:机械工业出版社,1988
    [29] 李珲.数控磁轴承—转子系统的研究[D].北京:北京工业大学,2000
    [30] Norbert Skricka, Richard Markert. Improvements in the integration of active magnetic bearings[J]. Control Engineering Practice, 2002, 10: 917~922
    [31] 李旗,林治强.用DSP开发的单自由度磁悬浮主轴数字控制系统[J].西安理工大学学报,2002,18(4):399~402
    [32] 沈春林等.数字控制系统:原理、硬件与软件[M].北京:航空工业出版社,1993
    [33] 章正斌等.模糊控制工程[M].重庆:重庆大学出版社,1995
    [34] 刘叔军等.MATLAB 7.0控制系统应用与实例[M].北京:机械工业出版社,2006
    [34] 吴晓燕,张双选.MATLAB在自动控制中的应用[M].西安:西安电子科技大学出版社,2006
    [35] 胡伟,季晓衡.单片机C程序设计及应用实例[M].北京:人民邮电出版社,2003
    [36] 马忠梅.单片机的C语言应用程序设计[M].北京:北京航空航天大学业出版社,1997
    [37] A. T. Carmichael, S. Hinchliffe, P. N. Murgatroyd, and I. D. Williams. Magnetic suspension systems with digital controllers[J]. Rev. Sci. Imstrum, 1986, 57(8): 1611~1615
    [38] Norman Grum & Brian Green etc.. Active Magnetic Bearing Requirements for Turbomachinery[J]. The Institution of Electrical Engineers, 1997
    [39] 郝金平.数字式电磁轴承控制的研究[D].西安:西安交通大学,1997,3
    [40] RONALD D. WlLLIAMS, F. JOSEPH, and Paul E. ALLAIRE. Digital Control of Active Magnetic Bearings[J]. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 1990, 37(1): 19~27
    [41] 曹柱中,徐薇莉.自动控制原理与设计(修订版)[M].上海:上海交通大学出版社.1999
    [42] 杨文平,陈国定,张永红,苏华.电磁轴承控制系统设计与仿真研究[J].计算机测量与控制,2002,10(3):180~182

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