Design and fabrication of rotary magnetostrictvie energy harvester for knee-joint wearable applications

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World Pub Date : 2022-02-17 DOI:10.1108/cw-01-2021-0002

Baiping Yan, Dazhuo Huang, Junjie Hong, Chengming Zhang

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引用次数: 0

Abstract

Purpose This paper aims to present the design and fabrication of a rotary magnetostrictive energy generator, using to harvest the rotation energy of human knee joint. Design/methodology/approach A rotary magnetostrictive energy generator is presented in this paper. The harvester consists of six movable flat Terfenol-D rods, surround by the picked-up coils respective, and alternate permanent magnet (PM) array fixed in the upper cover of the stator. The harvester rotates like as a stepper motor, which has rotary electromagnetic power generating effect and impacted magnetostrictive power generating effect in its rotation. Modeling and simulation are used to validate the concept. A prototype of harvester is fabricated and subjected to the experimental characterization. Findings The size of proposed structure is control as 77 cm3, and its mass is about 0.21 kg. Huge induced voltage generated in the short-time impact situation, and that induced voltage in the harvester can up to 18.6 V at 0.32 s stepper rotation. Also, the presented harvester has good harvesting effects at low frequency human walking situation, which is suitable to be used for future researches of wearable knee joint applications. Originality/value A new concept of magnetostrictive harvester is presneted, which will be benefit for the application of human knee joint wearable. Also, this concept will give us more idea for collection of human movement energy.

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膝关节可穿戴旋转式磁致伸缩能量采集器的设计与制造

目的设计和制作一种旋转磁致伸缩能量发生器，用于采集人体膝关节的旋转能量。本文介绍了一种旋转磁致伸缩能量发生器。收集器由六个可移动的平面Terfenol-D棒组成，分别由拾取线圈环绕，定子上盖固定有交替永磁(PM)阵列。收割机像步进电机一样旋转，其旋转具有旋转电磁发电效果和冲击磁致伸缩发电效果。通过建模和仿真验证了该概念。制作了收割机样机并进行了实验表征。研究结果:结构尺寸控制在77 cm3，质量约0.21 kg。短时间冲击时产生巨大的感应电压，在步进旋转0.32 s时，收割机的感应电压可达18.6 V。此外，该采集器在人体低频行走情况下具有良好的采集效果，适合于未来可穿戴膝关节应用的研究。提出了一种磁致伸缩收割机的新概念，这将有利于人体膝关节可穿戴设备的应用。同时，这一概念也将为人体运动能量的收集提供更多的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Circuit World 工程技术-材料科学：综合

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Circuit World is a platform for state of the art, technical papers and editorials in the areas of electronics circuit, component, assembly, and product design, manufacture, test, and use, including quality, reliability and safety. The journal comprises the multidisciplinary study of the various theories, methodologies, technologies, processes and applications relating to todays and future electronics. Circuit World provides a comprehensive and authoritative information source for research, application and current awareness purposes. Circuit World covers a broad range of topics, including: • Circuit theory, design methodology, analysis and simulation • Digital, analog, microwave and optoelectronic integrated circuits • Semiconductors, passives, connectors and sensors • Electronic packaging of components, assemblies and products • PCB design technologies and processes (controlled impedance, high-speed PCBs, laminates and lamination, laser processes and drilling, moulded interconnect devices, multilayer boards, optical PCBs, single- and double-sided boards, soldering and solderable finishes) • Design for X (including manufacturability, quality, reliability, maintainability, sustainment, safety, reuse, disposal) • Internet of Things (IoT).