文氏桥振荡器的簇发现象分析及实验验证  

Bursting Phenomenon Analyses and Experimental Validation in Wien-bridge Oscillator

作　　者：徐权[1] 张琴玲[1] 史国栋[1] 

机构地区：[1]常州大学信息科学与工程学院,江苏常州213164

出　　处：《电气电子教学学报》2016年第5期46-49,共4页Journal of Electrical and Electronic Education

摘　　要：本文采用一对二极管将无源LC滤波器非线性耦合到文氏桥振荡器的并联桥臂替换电阻,实现了一种新颖的文氏桥振荡器;建立了该电路的动力学模型,开展了动力学行为分析。结果表明:文氏桥振荡器在给定的参数域内具有快慢效应。进一步研究了混沌簇发和周期簇发现象。本文研制了实验电路,该实验电路结构简单、易物理实现,实验测量和数值仿真两者结果一致,证明了理论分析的有效性。Replacing the parallel resistor with a passive LC filter and nonlinear coupling by a diode pair to the par- allel bridge arm of classical Wien-bridge oscillator, a novel Wien-bridge oscillator is implemented. The dynamical model is established, upon which the dynamical behavior is performed. The results show that the fast-slow effect existing in the system under given parameter region. Furthermore, the dynamics for chaotic and period bursting phenomena are explained. A hardware realization circuit is built, the experimental circuit has simple structure and is easy to physical manufacture, and the experimental measurements and numerical simulations are consistent, veri- fying the validity of the theoretical analyses.

关 键 词：周期簇发振荡 混沌簇发振荡 文氏桥振荡器 

分 类 号：TN271.6[电子电信—物理电子学] TP918[自动化与计算机技术]