一种基于SPWM控制实现的磁控型忆阻器等效电路  

Flux-controlled memristor equivalent circuit based on SPWM control

作　　者：谭斌冠 陈艳峰[1] 张波[1] 丘东元[1] 陈曦[1] Binguan TAN Yanfeng CHEN Bo ZHANG Dongyuan QIU Xi CHEN(Institute of Power, South China University of Technology, Guangzhou 510641, China)

机构地区：[1]华南理工大学电力学院,广州510641

出　　处：《中国科学：信息科学》2017年第7期940-952,共13页Scientia Sinica(Informationis)

基　　金：广东省自然科学基金(批准号:2014A030313247);国家自然科学基金(批准号:51437005)资助项目

摘　　要：目前基于集成运放构建的忆阻器等效实现电路能处理的信号功率较小,通常为毫瓦数量级.针对此问题,提出了一种基于SPWM控制实现的大功率磁控型忆阻器等效电路.该电路包括主电路和控制电路两部分,其主电路由无源低通滤波电路和可变电阻电路组成,采用电感、电阻、开关管等元器件实现,因而可用于大功率应用场合.仿真和实验结果表明所提出电路的端口电阻具有忆阻器所特有的斜"8"字伏安特性曲线,可有效实现忆阻器的功能特性;并且电路能处理的信号功率达到数百瓦;此外,所提出的电路所用元器件较少、电路结构简单、易于实现,并有助于降低研发成本.This paper provides a practical two-terminal implementation circuit model of a flux-controlled memristor based on the SPWM（Sine-wave Pulse-Width Modulation） control algorithm. The model can be divided into two parts： the main circuit and the control circuit. The main circuit includes a passive low pass filter and an equivalent variable resistor regulated by the control circuit based on the SPWM method. The components that constitute the main circuit are passive devices, such as resistors, inductors and capacitors, as well as power switching devices. Thus, the memristor implementation circuit can be used to handle electrical signals with higher power levels. Detailed theoretical analysis and verification of the proposed memristor circuit are presented. Both the simulated and experimental results demonstrate that the input impedance of the proposed circuit has the typical characteristics of a flux-controlled memristor, which is in accordance with the theoretical analysis. Furthermore,the circuit can handle signals with power up to several hundred watts. Additionally, the proposed circuit has the advantages of simple topology and low cost, which may promote applications of the memristor in the real world.

关 键 词：忆阻器 大功率 SPWM控制 可变电阻 低通滤波 

分 类 号：TN60[电子电信—电路与系统]