A four-dimensional multi-stable autonomous memristive chaotic circuit

Abstract

The invention provides a four-dimensional multistable autonomous memristor chaotic circuit. Four circuit channels are established through utilization of 19 resistors, 4 capacitors, 9 operational amplifiers, 3 multipliers and 4 tangent modules. Output signals of a first channel, a second channel and a fourth channel are taken as input signals of the first channel. The output signals of the first channel, the second channel and a third channel are taken as the input signals of the second channel. The output signals of the second channel and the third channel are taken as the input signals of thethird channel. The output signals of the first channel are taken as the input signals of the fourth channel. Right sides of chaotic circuit characteristic equations are composed of tangent trigonometric function operation. Due to periodicity of trigonometric functions, a great number of unfixed attractors exist; through increase of the attractors, a topology structure is relatively complex; dynamic behaviors are relatively rich; the multistable dynamic property can be generated; the security of the secret communication is improved to a certain degree; and the technical reference is provided by a chaotic system in secret communication application.

Description

technical field [0001] The invention relates to the technical field of chaotic signal generators, in particular to a four-dimensional multi-stable autonomous memristor chaotic circuit. Background technique [0002] Chaos is a seemingly random and irregular dynamic behavior in a bounded area generated in a deterministic system. It interpenetrates, promotes and develops with other disciplines. It is widely used in electronic engineering, information engineering, communication engineering, Mechanical engineering and other fields have broad application prospects. [0003] Memristor, as an electronic component with memory function, will inevitably lead to changes in the structural system, principle, and design theory of electronic circuits, and will promote the development of new application fields in the electronics industry. In the four-dimensional memristive chaotic circuit, it is found in the memristive chaotic current that due to the intervention of memristor in the circuit...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem that the existing four-dimensional memristive chaotic circuit is complex and cannot meet the needs of secure communication, the present invention proposes a four-dimensional multi-stable autonomous memristive chaotic circuit, which uses resistors, capacitors, inductors and operational amplifiers to form a basic operational circuit as a chaotic Circuit design The most basic arithmetic unit circuit, use the basic arithmetic unit circuit to realize the required linear operations of addition, subtraction, inversion, integration and differentiation, and use Pspice software to simulate and verify the chaotic characteristics of the constructed circuit

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