| 驱动频率对超磁致伸缩致动器的损耗和温升特性的影响 |
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| 引用本文： | 李立毅,严柏平,张成明. 驱动频率对超磁致伸缩致动器的损耗和温升特性的影响[J]. 中国电机工程学报, 2011, 31(18) |
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| 作者姓名： | 李立毅 严柏平 张成明 |
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| 作者单位： | 哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市,150001 |
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| 摘 要： | 从超磁致伸缩材料的压磁效应入手,基于能量极小值条件和磁学理论,分析了磁化过程中磁弹性力对材料中磁场的影响,分析了不同驱动频率下材料的涡流损耗、磁滞损耗以及复数磁导率的频率特性,对致动器中的磁能损耗以及损耗带来的温升特性进行仿真实验.结果表明,利用涡流损耗的计算公式得到的结果与有限元仿真结果吻合较好,该公式可适用于超磁致伸缩材料在中低频下的损耗计算,而高频下复数磁导率的变化将增大材料内部磁场的滞回非线性.实验结果表明,致动器中超磁致伸缩材料轴向温度分布随驱动频率的变化而变化;实验验证了计算与仿真结果的正确性,在此基础上分析了强制水冷对致动器温升的控制,所得结论为超磁致伸缩致动器的设计提供参考.
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| 关 键 词： | 超磁致伸缩致动器 频率 磁导率 磁能损耗 温度 |
Influence of Frequency on Characteristic of Loss and Temperature in Giant Magnetostrictive Actuator |
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| LI Liyi , YAN Baiping , ZHANG Chengming. Influence of Frequency on Characteristic of Loss and Temperature in Giant Magnetostrictive Actuator[J]. Proceedings of the CSEE, 2011, 31(18) |
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| Authors: | LI Liyi YAN Baiping ZHANG Chengming |
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| Affiliation: | LI Liyi,YAN Baiping,ZHANG Chengming(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,Heilongjiang Province,China) |
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| Abstract: | According to inverse magnetostrictive effect,the dynamic magnetic field of giant magnetostrictive material(GMM) under magnetoelastic force in magnetization process was derived based on the minimal value principle of energy combining with magnetic theory.Then the frequency characteristics of eddy current loss,hysteresis loss and complex permeability were studied.The simulative and experimental results were used to analyze the influence of magnetic loss on the temperature rise characteristic of giant magnetos... |
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| Keywords: | giant magnetostrictive actuator(GMA) frequency permeability magnetic loss temperature |
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