用软件实现频率变化控制的方法  

Method to Control the Frequency Fluctuation with Software

作　　者：崔树清[1] 

机构地区：[1]淮阴工学院,江苏淮阴223001

出　　处：《现代电子技术》2007年第24期109-111,共3页Modern Electronics Technique

摘　　要：介绍一种基于直接数字频率合成(DDFS)技术对频率变化的控制方法,该技术以其分辨率高,转换速度快、以及波形变换灵活而得到广泛应用。通过采用MCS 51单片机软件来实现对频率变化控制,更加方便可靠,解决了分频方法存在的精度较低,频率频进不均匀等问题,并抑制噪声,这种方法可以广泛应用于变频调速控制系统中。The author introduces a DDFS- based method to control the frequency fluctuation. This technology has been widely used as a result of its high frequency resolution ratio, fast shifting speed and the flexible changing of wave shape. The control for the frequency shifting is realized by the software - MCS - 51. This kind of method is convincing and convenient and is able to resolve the problems such as low accuracy, unsmooth change of the frequency and the elimination for the noise. Also, this method can be applied in the control system of frequency adjusting and speed adjusting.

关 键 词：DDFS变频 频率分辨率 软件 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]