Multi-System Fractional-Order Chaotic Signal Generator

In this paper, a signal generator is designed to realize six different fractional-order chaotic systems. Based on fractional-order generalized Lorenz system, a fractional-order four-dimensional hyperchaotic system is constructed by adding one-dimensional variables. Six different chaotic signal generator are selected through four analog switches. In addition, the fractional order of the system is mixed order, which is 0.8 and 0.9, respectively. Using pure analog devices, six kinds of signal generator for hyperchaotic systems with incommensurate orders are designed. The whole circuit system consists of only six operational amplifiers, three analog multipliers and a small number of linear resistors and capacitors. The signal generator circuit is simple to implement and reliable in performance. The generated chaotic signal has high complexity, which provides a new signal selection for the application of chaos in the field of secure communication.