混沌调制信号生成及其改善开关电源电磁兼容性的研究  

Generation of Chaos-switching Modulation Signals and Its Application in Depressing the Level of EMI in Switching-mode Power Supply

作　　者：高金峰[1] 吴振军[1] 赵坤[1] 张玲 

机构地区：[1]郑州大学电气工程学院,河南郑州450002 [2]郑州市通讯公司,河南郑州450052

出　　处：《郑州大学学报（工学版）》2003年第3期6-9,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省2001年度杰出青年科学基金资助项目(0112001600)

摘　　要：随机开关调制技术可以降低开关电源电磁干扰.混沌是确定性系统产生的随机信号,可将其用于开关电源随机开关调制的控制信号.以蔡氏电路的混沌输出作为信号源,给出用于控制开关电源开关调制信号的软件实现方法.将生成的混沌调制开关信号应用于boost型电路,验证混沌开关调制技术降低电磁干扰水平的效果.计算机模拟结果表明,以蔡氏电路的混沌输出作为信号源生成的混沌开关调制信号,可以降低开关电源的电磁干扰水平.Randomswitching modulation can reduce the electromagnetic interference (EMI) of switchingmode power supply(SMPS).Chaotic signals are sorts of stochastic signals generated from deterministic nonilinear system,and can be used as random modulating signals to control SMPS.In this paper,we use the output of the 'Chua's circuit' as signal source and present a method to realize the chaosswitching modulation signals which are used to control SMPS.It illustrated the effect of depressing the level of EMI of SMPS by applying the chaosswitching modulation signal to boost DC/DC converter.The computer simulation result demonstrated that the chaosswitching modulation signal,which is generated from 'Chua's circuit',can be used to depress the level of EMI of SMPS.

关 键 词：混沌调制信号 开关电源 电磁兼容性 蔡氏电路 随机性 BOOST型 

分 类 号：TN919.3[电子电信—通信与信息系统] TN86[电子电信—信息与通信工程]