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
收藏
页码：2982 / 2986
页数：5
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