Frequency hysteresis phenomena in the frequency switched Chua's circuit

In this paper we introduce the so called frequency switched Chua's circuit, based on the introduction of a switch device into the Chua's circuit. The dynamics of this system has been investigated both numerically and experimentally with respect to the frequency of the switch enabling signal. It exhibits different strange attractors, according to the variation of the frequency of the switching signal. Moreover, very strange frequency hysteresis phenomena have been revealed.