利用电子和永久磁铁开发故障安全磁流变流体装置

IF 2.4 3区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Takehito Kikuchi, Rihiro Fukuyama, Isao Abe
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引用次数: 0

摘要

任何机械系统安全的一个重要设计策略就是 "故障安全 "概念,用来防止不可避免的错误导致事故。对于故障安全设计而言,正确组合或选择常开和常闭装置非常重要。然而,大多数传统的磁流变(MRF)装置都是常开的,其输出力/扭矩在电流输入的关闭状态下会消失。因此,开发一种常闭磁流变流体设备(NC-MRD)可能有助于实现故障安全的机电一体化系统。在本研究中,我们通过分析和实验研究了分离式轴向磁化永磁体(PM)对常闭型和旋转型 MRF 设备的影响。我们使用了两种类型的分离式轴向永磁体作为电磁体(EM)关断状态下的磁化资源。关闭和平衡状态下的磁通密度分布被评估为 NC-MRD 的代表值。作为实际测试平台,我们使用三块市场上可买到的截面轴向钕磁铁设计并开发了 NC-MRD。实验结果表明,该装置在电磁关闭状态下会产生制动扭矩。在大约 200 mA 的正输入电流下,扭矩几乎是平衡的,最小扭矩小于 0.1 Nm,不到最大扭矩的 2%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of a fail-safe magnetorheological fluid device using electro and permanent magnets
An important design strategy in the safety of any mechanical system is the “fail-safe” concept, which is used to prevent inevitable mistakes from resulting in accidents. For a failsafe design, the proper combination or selection of both normally open and closed devices is important. However, most conventional Magnetorheological fluid (MRF) devices are normally open, and their output force/torque disappears in the off state of the current input. Therefore, the development of a normally closed MRF device (NC-MRD) may contribute to a fail-safe mechatronics system. In this study, we analytically and experimentally investigated the effects of separated axial magnetized permanent magnets (PM) on normally closed and rotary-type MRF devices. We used two types of separated axial PM as magnetization resources in the off state of the electric magnet (EM). The distributions of the magnetic flux densities in the off and balanced states were evaluated as representative values of the NC-MRD. As a real testbed, we designed and developed the NC-MRD using three commercially available sectional axial neodymium magnets. The experimental results showed that the device generated a braking torque in the off state of the EM. With a positive input current of approximately 200 mA, the torque was almost balanced, and the minimum torque was less than 0.1 Nm, which was less than 2% of the maximum torque.
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来源期刊
Journal of Intelligent Material Systems and Structures
Journal of Intelligent Material Systems and Structures 工程技术-材料科学:综合
CiteScore
5.40
自引率
11.10%
发文量
126
审稿时长
4.7 months
期刊介绍: The Journal of Intelligent Materials Systems and Structures is an international peer-reviewed journal that publishes the highest quality original research reporting the results of experimental or theoretical work on any aspect of intelligent materials systems and/or structures research also called smart structure, smart materials, active materials, adaptive structures and adaptive materials.
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