Digital-analog hybrid chaotic circuit containing mathematical operation circuit and operation method thereof

Abstract

The invention discloses a digital-analog hybrid chaotic circuit containing a mathematical operation circuit and an operation method thereof. According to the digital-analog hybrid chaotic circuit disclosed by the invention, the chaotic circuit composed of a difference equation and a symbolic function is realized in such a manner that the difference equation is realized by an analog circuit and the symbolic function is realized by the mathematical operation circuit. The analog circuit is composed of a resistor, a capacitor, an operational amplifier and other conventional analog devices. A digital circuit is composed of a signal forming module, a mathematical operation module and a unipolar-bipolar signal conversion module, wherein the mathematical operation module is composed of an adder, a multiplier and other conventional digital circuits. According to the digital-analog hybrid chaotic circuit disclosed by the invention, the digital devices are embedded in the traditional analog chaotic circuit to complete symbolic computation, and different chaotic systems can be realized by switching different mathematical operation modules in the same circuit, so the precision is very high, and the universality and the adaptability are relatively strong.

Description

technical field [0001] The invention belongs to a digital-analog hybrid chaotic circuit, in particular to a digital-analog hybrid circuit including a mathematical operation circuit and an operation method thereof. Background technique [0002] Chaotic circuit is an intuitive and effective method to verify the phenomenon of chaos. At present, there are two kinds of chaotic circuit realization methods commonly used: analog realization and digital realization. The analog implementation method requires more analog devices and the device parameters are easily affected by the environment, and the digital implementation method has a limited word length effect. Therefore, the digital-analog hybrid method has attracted more and more attention from researchers. [0003] Nonlinear terms are necessary conditions for the generation of chaos and hyperchaotic phenomena, and usually the nonlinear terms in dynamical systems come from quadratic polynomials. However, piecewise linear functi...

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Problems solved by technology

The analog implementation method requires more analog devices and the device parameters are easily affected by the environment, and the digital implementation method has a limited word length effect

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