基于CF的全集成MOSFET—C六阶低通滤波器的仿真分析

本文提出了以电流跟随器ＣＦ为基本电路元件的全集成ＭＯＳＦＥＴ－Ｃ精确连续时间六阶低通滤波器电路，并应用ＰＳＰＩＣＥ－Ⅱ通用模拟电路程序，对其幅频特性和相频特性进行了计算机仿真分析，得出了实用的结论。     

Controlling and synchronization of a hyperchaotic system based on passive control

In this paper, a new hyperchaotic system is proposed, and the basic properties of this system are analyzed by means of equilibrium point, Poincaré map, bifurcation diagram, and Lyapunov exponents. Based on the passivity theory, the controllers are designed to achieve the new hyperchaotic system globally, asymptotically stabilized at the equilibrium point, and also realize the synchronization between the two hyperchaotic systems under different initial values respectively. Finally, the numerical simulation results show that the proposed control and synchronization schemes are effective.     

Experimental confirmation of a new reversed butterfly-shaped attractor

This paper reports a new reverse butterfly-shaped chaotic attractor and its experimental confirmation. Some basic dynamical properties, and chaotic behaviours of this new reverse butterfly attractor are studied. Simulation results support brief theoretical derivations. Furthermore, the system is experimentally confirmed by a simple electronic circuit.     

蔡氏对偶混沌电路分析

提出了一个新颖的蔡氏对偶混沌电路,并进行了深入的理论研究和计算机仿真分析.得出了几点结论:1)此混沌电路元器件少,且与蔡氏混沌电路结构完全对偶.2)在确定的元器件参数条件下,电路出现双涡卷奇怪吸引子和丰富的混沌动力学行为. 关键词： 蔡氏对偶电路 奇怪吸引子 混沌     

关于变压器电路模型中的二个问题

在对具有互感耦合电路的教学中,学生常提出这样的问题,对于无损耗全耦合变压器,其能量究竟是怎么传输的,它与理想变压器有什么不同之处,它的开路阻抗,短路阻抗的计算及物理意义等。而在教科书中对此一般分析较少,为了使学生能加深理解,以便较好的掌握具有互感耦合电路的有关概念和计算方法,本文对以上问题作了探讨。(一)无损耗全耦合变压器的功能传输关系对于无损耗全耦合变压器,由于没有漏磁通,以及R_1=R_2=0,耦合系数K=1,自感L_1、L_2和互感M为有限值,可表示如图1、图2所示。为了说明问题、画出其等效电路     

一个具有负电容的三阶自治混沌电路分析

提出了一个具有负电容的三阶自治混沌电路，并进行了深入的理论研究和计算机仿真分析。得出了几点结论：(1)此混沌电路元器件少，具有一个负电容，且与蔡氏混沌电路结构中的元件数完全相等。(2)在确定的元器件参数条件下，电路出现与蔡氏混沌电路完全相同的双涡卷奇怪吸引子和丰富的混沌动力学行为。     

低通滤波器结构的改进分析及模拟

在高频域，ＭＯＳＦＥＴ的分布参数对全集成ＭＯＳＦＥＴ－Ｃ滤波器的特性有很大影响，本文应用ＳＰＩＣＥ（Ⅱ）通用模拟电路程序，采用非理想运算放大器单极点电路模型，考虑到ＭＯＳＦＥＴ的寄生电容，对一个六阶切比雪夫低通滤波器全ＭＯＳＦＥＴ－Ｃ平衡结构应用传输线模型进行了仿真分析。     

A fractional order hyperchaotic system derived from Liu system and its circuit realization

In this paper we propose a novel four-dimensional fractional order hyperchaotic system derived from Liu system. Electronics workbench (EWB) and Matlab simulations show the dynamical behavior of the proposed four-dimensional fractional order hyperchaotic system. Finally, after separately using EWB and Matlab, an electronic circuit is designed to realize the novel four-dimensional fractional order hyperchaotic system and the experimental circuit results are obtained which are identical to software simulations.     

Finite-time sliding mode synchronization of chaotic systems

A new finite-time sliding mode control approach is presented for synchronizing two different topological structure chaotic systems. With the help of the Lyapunov method, the convergence property of the proposed control strategy is discussed in a rigorous manner. Furthermore, it is mathematically proved that our control strategy has a faster convergence speed than the conventional finite-time sliding mode control scheme. In addition, the proposed control strategy can ensure the finite-time synchronization between the master and the slave chaotic systems under internal uncertainties and external disturbances. Simulation results are provided to show the speediness and robustness of the proposed scheme. It is worth noticing that the proposed control scheme is applicable for secure communications.     

Control and synchronization of a hyperchaotic system based on passive control

In this paper, a new hyperchaotic system is proposed, and the basic properties of this system are analyzed by means of the equilibrium point, a Poincar map, the bifurcation diagram, and the Lyapunov exponents. Based on the passivity theory, the controllers are designed to achieve the new hyperchaotic system globally, asymptotically stabilized at the equilibrium point, and also realize the synchronization between the two hyperchaotic systems under different initial values respectively. Finally, the numerical simulation results show that the proposed control and synchronization schemes are effective.