Wireless power transfer system for capsule robot designed by radial square transmitting coil pair with novel ferrite structure

IF 2.3 3区医学 Q2 SURGERY International Journal of Medical Robotics and Computer Assisted Surgery Pub Date : 2023-11-27 DOI:10.1002/rcs.2598

Renqing Wen, Guozheng Yan, Zhiwu Wang, Haoyu Zhuang, Shuai Kuang

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Abstract

Background

Wireless power transmission for capsule robots has always posed challenges due to the unpredictable postures.

Methods

A radial transmitting coil with a novel ferrite structure is proposed, which consists of two parts with the function of converging magnetic induction lines and reducing magnetic leakage. To improve the flux density, uniformity, and shielding effectiveness, the design parameters are discussed and optimized on the basis of analytical calculations and simulation analysis.

Results

The proposed ferrite structure improves the power transfer efficiency from 2.78% to 5.21%. Additionally, the power transfer stability showed a slight improvement from 76.4% to 77.6%, while magnetic leakage was reduced by 84%. Finally, the human tissue safety is also discussed and verified.

Conclusions

The wireless power transfer system is shown to be feasible and safe.

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采用新型铁氧体结构径向方形传输线圈对设计胶囊机器人无线电力传输系统。

背景:由于胶囊机器人的姿态不可预测，其无线电力传输一直面临挑战。方法:提出了一种新型铁氧体结构的径向传输线圈，该线圈由两部分组成，具有磁感应线收敛和减少漏磁的功能。为了提高磁通密度、均匀性和屏蔽效能，在分析计算和仿真分析的基础上对设计参数进行了讨论和优化。结果:提出的铁氧体结构将功率传输效率从2.78%提高到5.21%。功率传输稳定性从76.4%提高到77.6%，漏磁降低了84%。最后，对人体组织的安全性进行了讨论和验证。结论:无线电力传输系统是可行的、安全的。

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

International Journal of Medical Robotics and Computer Assisted Surgery 医学-外科

CiteScore

4.50

自引率

12.00%

发文量

131

审稿时长

6-12 weeks

期刊介绍： The International Journal of Medical Robotics and Computer Assisted Surgery provides a cross-disciplinary platform for presenting the latest developments in robotics and computer assisted technologies for medical applications. The journal publishes cutting-edge papers and expert reviews, complemented by commentaries, correspondence and conference highlights that stimulate discussion and exchange of ideas. Areas of interest include robotic surgery aids and systems, operative planning tools, medical imaging and visualisation, simulation and navigation, virtual reality, intuitive command and control systems, haptics and sensor technologies. In addition to research and surgical planning studies, the journal welcomes papers detailing clinical trials and applications of computer-assisted workflows and robotic systems in neurosurgery, urology, paediatric, orthopaedic, craniofacial, cardiovascular, thoraco-abdominal, musculoskeletal and visceral surgery. Articles providing critical analysis of clinical trials, assessment of the benefits and risks of the application of these technologies, commenting on ease of use, or addressing surgical education and training issues are also encouraged. The journal aims to foster a community that encompasses medical practitioners, researchers, and engineers and computer scientists developing robotic systems and computational tools in academic and commercial environments, with the intention of promoting and developing these exciting areas of medical technology.