基于FPGA的新型混沌产生器的实现

Realization of a new type of chaotic generator based on FPGA

分析了混沌产生器的主要特征,基于数字化处理技术,通过对系统的连续时间状态方程进行离散化处理和变量比例变换,进一步用FPGA技术硬件实现,通过转折值a在0<a≤1范围变化,系统可产生双层单螺旋、单层单螺旋、双层双螺旋和单层双螺旋的四种不同类混沌吸引子。本文先进行计算机模拟仿真,随后应用FPGA技术产生混沌吸引子的一般原理给出其硬件实验电路。

This paper analyzes the characteristic of the chaotic generator presented, bases on the digital processing technology, realizes the generating chaotic attractors by discreating the state equation of continuous time, ratio transformation of variable, and field programmable gate array（FPGA） hardware approach, then changes the breakpoint a varies in the range of0〈a≤1, the double-layer single spiral, single-layer single spiral, double-layer double spiral and single-layer double spiral chaotic attractors can be generated. The paper shows the result of chaotic attractors by computer simulation ,then we propose a general design principle of FPGA technology for chaos generation and provide a experiment circuit.