Flux-controlled memristor equivalent circuit based on SPWM control

Abstract

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.