基于DSP和FPGA直接数字频率合成系统的设计  

Design of a Direct Digital Frequency Synthesis System Based on DSP and FPGA

作　　者：王庆东[1] 谢长生[1] 王海卫[1] 吴非[1] 

机构地区：[1]华中科技大学计算机科学与技术学院外存储国家专业实验室,湖北武汉430074

出　　处：《计算机工程与科学》2007年第9期126-128,共3页Computer Engineering & Science

基　　金：国家863计划资助项目(2005AA114180)

摘　　要：在研究微硬盘读写通道时,模拟伺服信号的信号发生器必不可少。本文研究了一种基于DSP和FPGA直接数字频率合成技术组成的程控信号发生器,其频率分辨率可达0.001Hz,波形输出的频率、幅值和相位精度高,稳定性好,且失真度低。该方法与传统实现方式相比,电路实现简单、易修改,便于程控并可模拟各种伺服信号。The device for servo signal generation is necessary for reading and writing the channel of micro hard disks. This paper studies a programmable signal device by the direct digital frequency synthesis technology based on DSP and FPGA. This device has a high frequency resolution of 0. 001Hz, a high precision of frequency, phase and amplitude of output wave, good reliability,and little distortion. Compared with general devices, this device can generate all kinds of servo signals, and the circuitry is simple, reliable and programmable.

关 键 词：伺服信号 DSP FPGA数字合成 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]