Chaotic oscillator based on multiple memristors

Abstract

The invention provides a chaotic oscillator based on multiple memristors. The oscillator comprises an operational amplifier U1, capacitors C1, C2 and C3, two positive and negative diodes D1 and D2, aresistor R, an inductor L1, two charge control memristors M1 (q1) and M2 (q2) and a magnetic control memristor W (xi), wherein one end of the magnetic control memristor W (xi) is connected with the positive phase input end of the operational amplifier; wherein one ends of the two charge-controlled memristors are connected with the inverting input end of the operational amplifier, the positive electrode end of the capacitor C1 is connected with the inverting input end of the operational amplifier, the positive electrode end of the capacitor C2 is connected with the positive electrode end of thecapacitor C1, the capacitor C3 and the inductor L1 are connected in parallel and simultaneously connected with one ends of the two positive and negative diodes D1 and D2, and the other end is grounded. The problems that a memristor circuit model in the prior art is too simple in structure, circuit elements involved in a circuit are relatively few, a certain deviation exists between a large numberof single memristor oscillators and the requirement of an ideal commercial memristor circuit model, and the design structure is relatively unreasonable are solved.

Description

technical field [0001] The invention relates to the technical fields of circuit design, communication and information, in particular to a chaotic oscillator based on a plurality of memristors. Background technique [0002] A chaotic system is a nonlinear system that can generate similar random signals. It has the characteristics of good pseudo-randomness, strong initial value sensitivity, and long-term unpredictability. Therefore, it has great application value in the fields of secure communication and image encryption. The chaotic signals that are often used in the practical engineering field are generally divided into two types: analog chaotic signals and digital chaotic signals. Since the simulation step size is limited in accuracy, the digital chaotic signal will cause chaotic degradation phenomenon under long-term operation, so the experimental results often fail to meet ideal expectations. The chaotic signal generated by the analog circuit is continuous, which can eff...

AI Technical Summary

Problems solved by technology

However, the existing memristive circuit model structure is too simple, and the circuit elements involved in the circuit are relatively few, and the single memristive oscillator is more

There is a certain deviation from the requirements of the ideal commercial memristor circuit model, and the design structure is relatively unreasonable, which is not enough for the basic demonstration teaching of commercial memristor research

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