摘要
基于存储器的正弦运算电路能够实现一种按照输入信号的正弦值变化的非线性运算。输入的信号经模数转换后,通过查找存储器EPROM表完成按正弦值转换,采用C语言来计算正弦函数值,按照模数、数模转换器的编解码的规则,用编程的方法,将生成4位16进制数的地址(输入)、函数值(输出)写到存储器中,随后再次通过数模转换器转换成模拟信号输出。该电路对于连续输入的信号有可靠的转换精度,为实现一种基于正弦函数的混沌电路提供了可能。
The memory-based sine function calculating circuit can make calculations in nonlinear circuits in accordance with the change of sine function and voltage value of the input signal. This study makes use of 16 ADC conversions, memories and the 16 DAC conversions to achieve circuit calculation of sine function. C progmamme is used to calculate the value of sine function and make conversion of the input signal as address of memory in accordance with the coding and decoding rules, and value of sine function as data of memory. For continuous input signal, the circuit has reliable conversion accuracy, and realizes chaotic circuit based on sine function.
出处
《淮海工学院学报（自然科学版）》
CAS
2008年第2期39-42,共4页
Journal of Huaihai Institute of Technology:Natural Sciences Edition
关键词
模数转换
存储器函数映射
C语言编程
数模转换
analog-digital converter
function map on memory
C programming
digital-analogconverter
