Piecewise linear implementation of nonlinear dynamical systems: from theory to practice

作     者：Poggi, T. Sciutto, A. Storace, M. 

作者机构：Univ Genoa Dept Biophys & Elect Engn I-16145 Genoa Italy 

出 版 物：《ELECTRONICS LETTERS》 (电子学快报)

年 卷 期：2009年第45卷第19期

页      面：966-967页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：University of Genoa PRIN 

主　　题：Integrated circuits Neurons Nonlinear systems Gate array circuits Electronic amplifiers 

摘      要：It is shown how to implement by a mixed-signal circuit a continuous-time dynamical system. The chosen case study is the Hindmarsh-Rose model of a biological neuron, but the design strategy can be applied to a large class of continuous-time nonlinear dynamical systems. The system nonlinearities are first approximated by using piecewise-linear functions and then digitally implemented on a field programmable gate array. The linear part of the system is completely analogue and is implemented by using operational amplifiers. Measurement results show that the circuit can reproduce the main dynamics of a biologically plausible neuron.