Lorenz system as nonlinearly connected first-order radiophysical RC-filters

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Abstract

A radiophysical implementation of the Lorenz system demonstrating a chaotic attractor is proposed. It is shown that the form of the Lorenz equation allows it to be represented as a set of low-frequency first-order RC filters connected by nonlinear connections using electronic multipliers. A circuit consisting of three first-order radiotechnical RC filters and two multipliers is proposed. An electronic circuit is considered that allows for the effective implementation of a generator demonstrating the chaotic Lorenz attractor.

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About the authors

V. I. Ponomarenko

Saratov Branch of Kotelnikov Institute of Radioengineering and Electronics of RAS

Author for correspondence.
Email: ponomarenkovi@gmail.com
Russian Federation, 38, Zelyonaya Street, Saratov, 410019

M. D. Prokhorov

Saratov Branch of Kotelnikov Institute of Radioengineering and Electronics of RAS

Email: ponomarenkovi@gmail.com
Russian Federation, 38, Zelyonaya Street, Saratov, 410019

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Supplementary files

Supplementary Files
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2. Fig. 1. Using integrators to implement the Lorenz system.

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3. Fig. 2. First-order filter as an integration element.

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4. Fig. 3. Schematic implementation of the Lorenz system using only multipliers and first-order low-pass filters.

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5. Fig. 4. Schematic implementation of the Lorenz system using real models of op amps and electron multipliers.

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6. Fig. 5. Phase portrait of the simulated Lorenz system shown in Fig. 4 (screenshot): the horizontal axis shows the Y variable, and the vertical axis shows the X variable.

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