| 超磁致伸缩振动器谐振频率自感知机理研究 |
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| 引用本文： | 徐爱群,宋小文,胡树根.超磁致伸缩振动器谐振频率自感知机理研究[J].振动与冲击,2010,29(3):26-29. |
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| 作者姓名： | 徐爱群 宋小文 胡树根 |
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| 作者单位： | （1.浙江大学 机械与能源工程学院,杭州 310027; 2. 嘉兴学院机械工程学系 嘉兴 314001） |
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| 基金项目： | 浙江省教育厅科研资助项目，嘉兴学院重点科研项目，嘉兴市科技计划项目 |
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| 摘 要： | 振动系统工作在谐振频率处则其工作效率最高,但由于受到负载、温度等因素的影响,其谐振频率往往会发生漂移,为了实现对振动系统工作频率的自动调节,提高系统的工作效率,提出采用搜索振动系统速度阻抗的方法,在无需安装检测谐振频率传感器的条件下,实现振动系统谐振工作点的自感知,并能快速、方便地自动跟踪系统的谐振频率。设计了超磁致伸缩振动器,并给出了振动器机械阻抗的表达式;在分析超磁致伸缩材料磁-机耦合关系的基础上,建立了超磁致伸缩振动系统的速度、阻抗及所受外力的自感知模型;在研制的实验系统上,验证了振动系统谐振频率自感知方法的可行性与正确性。
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| 关 键 词： | 振动器 谐振频率 自感知 自动跟踪 超磁致伸缩 |
| 收稿时间： | 2009-2-16 |
| 修稿时间： | 2009-3-19 |
Research on self-sensing mechanism of resonance frequency for magnetostrictive vibrator |
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| XU Ai-qun,SONG Xiao-wen,HU Shu-gen.Research on self-sensing mechanism of resonance frequency for magnetostrictive vibrator[J].Journal of Vibration and Shock,2010,29(3):26-29. |
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| Authors: | XU Ai-qun SONG Xiao-wen HU Shu-gen |
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| Affiliation: | (1. College of Mechanical and Energy Engineering,, Zhejiang University, Hangzhou 310027, China;2. Department of Mechanical Engineering, Jiaxing College，Jiaxing 314001,China) |
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| Abstract: | The working efficiency of a vibrator will reach its tiptop while working at resonance frequency.However,the excursion of its resonance frequency may occur when affected by load,temperature and other factors.The method of searching velocity impedance to achieve convenient self-sensing and speedy automatic following of resonance frequency was presented.Then the working frequency can be self-regulated and the working efficiency of vibration system improved,without fixing other sensor for inspecting resonance f... |
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| Keywords: | vibrator resonance frequency self-sensing automatic following magnetostriction |
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