Method for achieving automatic switching of seven Chen type chaotic systems and analog circuit

Abstract

The invention provides a method for achieving automatic switching of seven Chen type chaotic systems and an analog circuit. The analog circuit for achieving automatic switching of the seven Chen type chaotic systems 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 multiplier U11, a multiplier U12, a multiplier U13, a voltage comparator U7 and an analogue switch U6. By means of the analog circuit, automatic switching of the seven Chen type chaotic systems is achieved, the seven sub-systems have different balance points so that the automatic switching of the seven sub-systems with the different balance points is more random than that of sub-systems with same balance points, and generated digital sequences are more applicable to chaos based secret communication and have better application prospects in the chaos based secret communication.

Description

technical field [0001] The invention relates to an analog circuit for realizing the automatic switching of seven systems, in particular to a method and an analog circuit for realizing the automatic switching of a Chen-type seven systems to a chaotic system. Background technique [0002] At present, there are many ways to use analog circuits to realize integer-order and fractional-order chaotic systems and circuits, but the number of subsystems that use analog circuits to automatically switch chaotic systems is relatively small, generally no more than four, and the existing automatic switching The subsystems of the chaotic system have the same balance point, and there is no disclosure of a method for automatic switching of multiple sub-chaotic systems with different balance points and an analog circuit. Seven subsystems in the present invention have different balance points, which is more than having the same balance point. The automatic switching of point subsystems has grea...

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Problems solved by technology

[0002] At present, there are many ways to use analog circuits to realize integer-order and fractional-order chaotic systems and circuits, but the number of subsystems that use analog circuits to automatically switch chaotic systems is relatively small, generally no more than four, and the existing automatic switching The subsystems of the chaotic system have the same balance point, and there is no disclosure of a method for automatic switching of multiple sub-chaotic systems with different balance points and an analog circuit. Seven subsystems in the present invention have different balance points, which is more than having the same balance point. The automatic switching of the point subsystem has greater randomness, and the generated digital sequence is more suitable for chaos-based secure communication, and has better application prospects in chaos-based secure communication

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