Two modified for chaos negative impedance converter op amp oscillators with symmetrical and antisymmetrical nonlinearities

被引：17

作者：

Elwakil, AS ^{[1
]}

Soliman, AM ^{[1
]}

机构：

[1] Cairo Univ, Fac Engn, Dept Elect & Commun, Cairo, Egypt

来源：

INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS | 1998年 / 8卷 / 06期

关键词：

D O I：

10.1142/S0218127498001030

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

Two sinusoidal oscillator circuits, that employ an operational amplifier (op amp) as a current negative impedance converter (CNIC), are modified for chaos using a nonlinear resistor of antisymmetrical current-voltage characteristics formed by a junction field effect transistor (JFET) operating in the triode region. The internal op amp dominant pole is found to contribute significantly to the chaotic nature of one circuit while the other circuit develops different chaotic attractors when cubic and fifth power odd symmetrical nonlinearities are used. Mathematical models of the two generators are presented. Experimental laboratory results, circuit simulations and numerical simulations of the mathematical models well agree and are included.

引用

页码：1335 / 1346

页数：12