Synchronization Phenomena in Coupled van der Pol Oscillators with Memristor Couplings as Ladder Structure

Many researchers have investigated synchronization phenomena in coupled circuits with the memristor couplings. In this study, we propose the coupled three van der Pol oscillators via memristors as a ladder structure. We investigate synchronization phenomena by changing the initial condition. As a result, we confirmed that the pair of oscillators change between in-phase and anti-phase synchronization were observed by the changes of resistance value of memristor.