METHOD AND ANALOGUE CIRCUIT FOR FRACTIONAL ORDER CHAOTIC SYSTEM OF AUTOMATICALLY SWITCHING FOUR SYSTEMS BASED ON CHEN TYPE SYSTEM

摘要

Proposed is an analogue circuit for realizing automatic switching of four fractional order systems based on a Chen type system. The analogue circuit for realizing automatic switching of four fractional order systems based on a Chen type system is composed of an operational amplifier U1, an operational amplifier U2, an operational amplifier U3, an operational amplifier U5, an operational amplifier U8, a multiplier U4, a multiplier U9, a multiplier U10, a voltage comparator U7 and an analogue switch U6. In the present utility model, the analogue circuit is used for achieving the fractional order chaotic system with four Chen type subsystems which are automatically switched. The fractional order chaotic system is more complicated and higher in randomness than the automatic switching chaotic system which is composed of two or three sub-chaotic systems and non-switching fractional order chaotic systems, and can be a new choice for the signal source of secret communications and has better application prospects in secret communications.