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...
【基金】
国家863计划资助项目(2005AA114180)
【更新日期】
2007-10-30
【分类号】
TN741
【正文快照】
1引言用高质量的信号发生器来模拟各种伺服信号对微硬盘读写通道的研究起着重要作用,而频率合成技术是信号发生器的关键技术,影响着信号的频率精度、分辨率、稳定度以及波形失真度等波形的指标。直接数字式频率合成器(Direct Digital Frequency Syn-thesis,简称DDS)是近年来发?
| 
推荐 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
