Chaotic LIF Oscillator With Variable Resistance Feedback and Nonlinear Rate Coding

被引：6

作者：

Boriskov, Petr ^{[1
]}

机构：

[1] Petrozavodsk State Univ, Inst Phys & Technol, Petrozavodsk 185910, Russia

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2022年 / 69卷 / 06期

关键词：

Oscillators; Resistance; Integrated circuit modeling; Transistors; Voltage control; Switching circuits; RLC circuits; LIF neuron; chaos; chaotic oscillator; rate coding; feedback; second order filter; CIRCUIT; MODEL; PERFORMANCE; ADAPTATION;

D O I：

10.1109/TCSII.2022.3161273

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This brief presents a model of chaotic oscillator based on leaky integrate-and-fire (LIF) neuron with a switching element, which has an S-shaped current-voltage characteristic (S-IVC), and with nonlinear firing rate coding by control resistor. The circuit contains variable resistance feedback of LIF neuron, which includes a second order filter and two gain modules. Simulation results show that active RC-circuit can be used as a feedback filter and a bipolar transistor can be used as a control resistor. A mathematical model of the chaotic oscillator has been built. The transition to the dynamic chaos occurs according to the scenario of a period-doubling bifurcation cascades. The circuit provides theoretical perspectives for the creating devices of neuromorphic computing based on chaotic dynamics.

引用

页码：2982 / 2986

页数：5

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