摘要
首先介绍体内微机电系统无线能量传输技术的原理和构成。在互感基础上建立四种拓扑补偿的数学模型。用Mat-lab进行计算和仿真,研究了负载和工作频率对反映阻抗特性的影响以及电磁耦合结构参数如耦合系数和初次级绕组内阻等对系统性能的影响。表明耦合系数增大,可以大大增加系统传输效率;与次级绕组内阻相比,初级绕组内阻对系统传输效率影响更大。因此减小初级绕组内阻,可以显著提高系统传输效率和性能。
The principles and constitutions of the wireless transmission system of the MEMS inside human body are introduced.Based on mutual inductance,four compensatory model and mathematical differential equations are established.With Matlab simulation and calculation are carry through,the influences,such as the load,the work frequency on the reflected ipedance,and coupling coefficient k,the coils＇ resistance on the system performance,are studied.The results show the biggerr the coupling coefficient becomes,the increaser the system transmission efficiency;prior to the secondary coil resistance,the primary coil resistance has more imortant effect on the system transmission efficiency.So the smaller the primary coil resistance becomes,the better the system performance and transmission efficiency.
出处
《科学技术与工程》
2011年第8期1807-1812,共6页
Science Technology and Engineering
基金
广东省自然科学基金(10151148301000001)资助
