基于平面螺旋发射线圈的胶囊机器人无线供能系统的设计与优化  

Design and optimization of wireless power transfer system for capsule robots based on planar spiral transmitting coil

作　　者：梅远腾 李旻[1] Mei Yuanteng;Li Min(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640

出　　处：《电测与仪表》2023年第6期19-25,共7页Electrical Measurement & Instrumentation

基　　金：广东省自然科学基金资助项目(20181A030313223);广东省基础研究重点项目及应用研究重点项目(2018GKZDXM003)。

摘　　要：针对传统环绕式发射线圈的尺寸过大及穿戴不便等问题,文章提出了一种使用平面螺旋线圈作为发射线圈的胶囊机器人无线供能系统,有效地减小了发射线圈的尺寸,同时避免了穿戴不便的问题,提高了胶囊机器人无线供能系统的适用性。论文给出了系统的等效电路模型,研究了系统传输效率与系统参数的关系;对接收端线圈匝数进行了优化,提高了系统的传输效率;通过阻抗变换将负载的等效阻抗优化为最优负载。最后对基于该方案的无线能量传输系统进行了实验验证。结果表明,样机系统在10 cm传输距离下的传输效率达到了8.8%,传输功率超过了1 W。To tackle the issues of oversize and inconvenient wearing of the conventional wrap-around-style transmitting coil,a novel wireless power transfer(WPT)system for capsule robots is proposed in this paper.The key is to adopt a planar spiral coil as the transmitting coil,which effectively reduces the size of the transmitting coil,as well as avoids the inconvenient wearing issue.As a result,the capsule robot-oriented WPT system becomes more adaptive.Firstly,the equivalent circuit model is established,the relationship between system transmission efficiency and system parameters is studied.Then,the turns of the receiving coil are optimized to promote the transmission efficiency of the system.After that,the equivalent load resistance is optimized with an impedance converter.Finally,the wireless power transmitting system based on the proposed scheme is verified by several experiments.The results show that an overall transmission efficiency of prototype system 8.8%is realized at 10 cm distance with the output power larger than 1 W.

关 键 词：胶囊机器人 无线能量传输 平面螺旋线圈 线圈优化 阻抗变换 

分 类 号：TM131.4[电气工程—电工理论与新技术]