摘要
在对抛物线映射混沌方程的分叉图、数值仿真分析的基础上,提出了仅用MSP430F169单片机实现混沌时域波形的方法.为了使方程能够在单片机上实施相同的定点迭代运算迭代过程,通过设定单片机的控制寄存器、数模转换器,采用比例扩张变换和移位的方法编写C程序,编译后下载到单片机中,将单片机的P6.6引脚连接到示波器探头观测到硬件实现的混沌信号与MATLAB数值仿真的结果完全一致,充分说明本设计的可行性,其为实现基于在MSP430F169单片机的保密通信提供了参考.
The paper analyzes the bifurcation diagram and MATLAB simulation of parabolic-mapping chaotic equation,and then puts forward a method to realize the chaotic time- domain waveform by only using MSP430F169 MCU. The same fixed-point iteration with parabolic- mapping chaotic equation on MCU can be realized by setting the control registers and digital analog converter,and adopting proportional expansion method to design C program,which should be downloaded after compiling and fixed into the microcontroller. The chaotic signals of hardware implementation can be observed when the MCU P6. 6 pin is connected to the oscilloscope probe. The result is totally the same as that of MATLAB numerical simulation,which fully illustrates the feasibility of this design and provides references for secret communication based on MSP430F169 MCU.
出处
《成都大学学报（自然科学版）》
2015年第4期381-383,407,共4页
Journal of Chengdu University（Natural Science Edition）
基金
江苏省高等学校2013年度大学生实践创新训练计划(201310324058X)资助项目
