Novel model of active vibration isolation based on giant magnetostrictive actuator
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摘要: 根据超磁致伸缩材料的本构方程分析了超磁致伸缩作动器输出位移的组成,以此为根据建立了基于超磁致伸缩作动器的单层单自由度隔振平台数学模型.该模型以平台在激振力作用下产生的振动位移为系统干扰输入;根据此模型分析了基于超磁致伸缩作动器的隔振原理;在频域内推导出了系统隔振能力与激振力频率及作动器最大输出位移之间的数学关系,然后在时域内采用自适应LMS(Least Mean Square)算法在Matalb环境下进行仿真.仿真结果与理论分析均表明,隔振平台的隔振能力与激振力频率的平方以及作动器最大输出位移成正比,从而为合理设计隔振平台用超磁致伸缩作动器提供了理论依据.该模型不仅可用于分析基于磁致伸缩作动器的隔振原理,对其它作动器的隔振原理也适用.Abstract: Through analyzing the constitutive relation of the giant magnetostrictive material, the main controllable factor constituting the output displacement for giant magntostrictive actuator was discussed. Upon which to investigate the key factors of single layer and one degree of freedom isolation platform based on giant magntostrictive actuator, a model with the displacement responding to acting force of the platform as its reference input was presented. Through analyzing the vibration isolation principle with the model, the conclusion was drawn that both acting force frequency and the maximum displacement of actuator are crucial to the effect of the system, in that the system vibration isolation capacity is direct ratio to the square of acting force frequency and maximum displacement of actuator. In time-domain, simulations based on Matlab platform with adaptive LMS (least mean square) algorithm were carried out to verify the conclusion. Thus it is theoretically instructive to design a vibration isolation system with giant magnetostrictive actuator, and the model is suitable to the system with giant magnetostrictive actuators as well to the system with other kinds of actuators.
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Key words:
- giant magnetostrictive /
- actuators /
- active vibration isolation /
- least mean square
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[1] Clark A E. Ferromagnetic materials [M]. Amsterdam: NorthHoll and Publishing Company, 1980:531-538 [2] Shaw J S. Adaptive vibration control by using magnetostrictive actuator [J]. Journal of Intelligent Material Systems and Structures, 1998, 9(2): 87-94 [3] 张磊. 基于磁致伸缩作动器的主动隔振技术研究 .北京:北京航空航天大学自动化科学与电器工程学院, 2004 Zhang Lei. Research on the active vibration isolation system based on giant magnetostrictive actuator . Beijing: School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, 2004(in Chinese) [4] 张春良.微制造平台振动主动控制研究 .杭州:浙江大学机械与能源工程学院, 2003 Zhang Chunliang. Study on active vibration control of a mcro-manufacturing platform . Hangzhou: College of Mechanical and Energy Engineering, Zhejiang University, 2003(in Chinese) [5] Katsuhide W, Shinji H, Takahide H. Combination of H and PI control for an electromagnetically levitated vibration isolation system Frank Lewis. Proceeding of the 35th Conference on Decision and Control. Kobe: Tokyo Publishing Company, 1996:1223-1228 [6] Olsson C. Active automotive engine vibration isolation using feedback control [J].Sound and Vibration,2006, 294:162-176 [7] 杨铁军,陈玉强,黄金娥,等.柴油机双层隔振系统耦合振动主动控制仿真研究[J]. 船舶工程, 2001, 3: 24-29 Yang Tiejun, Chen Yuqiang, Huang Jin’e, et al. Simulation research on active control of coupling vibration of a two-stage isolation system for diesel [J]. Ship Engineering, 2001,3: 24-29(in Chinese) [8] 张磊,刘永光,付永领,等. 基于在线频率估计的自适应反馈主动隔振技术[J].北京航空航天大学学报,2005,31(2):172-176 Zhang Lei, Liu Yongguang, Fu Yongling, et al. Adaptive feedback control method for active vibration isolation based on on-line frequencies estimatio[J].Journal of University of Aeronautics and Astronautics,2005, 31(2):172-176(in Chinese) [9] Zhang Yisheng. A hybrid adaptive and robust control methodology with application to active vibration isolation . Illinois: School of Mechanical Engineering and Automation, University of Illinois at Urbana-Champaign, 2003 [10] 顾仲权,朱金才,彭福军,等.磁致伸缩材料作动器在振动主动控制中的应用研究[J].振动工程学报,1998,11(4):381-388 Gu Zhongquan, Zhu Jincai, Peng Fujun, et al. Study on the application of magnetostrictive actuator for active vibration control [J].Journal of Vibration Engineering, 1998, 11 (4): 381-388(in Chinese) [11] 方同, 薛璞. 振动理论及应用[M]. 西安:西北工业大学出版社, 2002:61-67 Fang Tong, Xue Pu. Theory and application of vibration [M]. Xi’an: Northwestern Polytechnical University Press, 2002:61-67(in Chinese)
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