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首页> 外文会议>IEEE International Conference on Electronic Measurement and Instruments >Rectangular closed double magnetic circuit for vibration exciter with 1.2m stroke
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Rectangular closed double magnetic circuit for vibration exciter with 1.2m stroke

机译：矩形励磁闭合双磁路，行程为1.2m

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摘要

High performance magnetic circuit offering long stroke is the key of developing a vibration exciter for ultra-low-frequency (ULF) vibration calibration. A rectangular closed double magnetic circuit (RCDMC) offering ultra-long stroke up to 1.2 m is proposed. The method of fabrication and assembly of NdFeB magnets with a dimension of 420 mm ˟150 mm ˟50 mm is discussed and force simulation analysis is carried out. The maximum assembly force is less than 3kN with radial assembly method. A RCDMC prototype has been successfully developed and applied in a horizontal ULF vibration exciter Experiments are carried out with a RCDMC prototype developed for a horizontal vibration exciter. Experimental results show that a MFD of 102 mT and non-uniformity of MFD of 0.2% along 1.4 m air gap are realized, making the proposed RCDMC a solution for ULF vibration calibration.
机译：提供长冲程的高性能磁路是开发用于超低频（ULF）振动校准的振动激励器的关键。提出了一种矩形闭合双磁路（RCDMC），该电路可提供长达1.2 m的超长行程。讨论了尺寸为420mm×150mm×50mm的NdFeB磁体的制造和组装方法，并进行了力仿真分析。使用径向组装方法时，最大组装力小于3kN。已经成功开发了RCDMC原型并将其应用于水平ULF振动激励器中。已针对水平振动激励器开发了RCDMC原型进行了实验。实验结果表明，实现了102 mT的MFD和沿着1.4 m气隙的0.2％的MFD不均匀性，从而使所提出的RCDMC成为ULF振动校准的解决方案。

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