| 课程设计 数字移相信号发生器设计 共28页，9739字 目录 摘 要 2 一、设计任务与要求 3 二、设计方案和论证 3 三、DDS数字移相调频原理 5 四、分析与计算 6 五、程序设计 8 系统的RTL连接图 9 模块一：分频模块 10 模块二、32位加法器模块 12 模块三、10位加法器模块 13 模块四、32位锁存器模块 14 模块五、10位锁存器模块 15 模块六、正弦ROM查找表的设计 16 模块七、数据产生模块 17 模块八、10位乘法器模块 21 模块九、选择显示模块 22 顶层文件设计 23 六、硬件实现 26 七、出现的问题和解决方法 27 八、设计总结 28 九、参考文献 28 摘 要：随着现代电子测量技术的发展,能够产生各种波形信号的数字式信号发生器的应用越来越广泛，本文介绍了一种以DDS为基本单元的数字移相信号发生器的设计方法。将数字信号经过移相后再转换成模拟信号。DDS是一项关键的数字技术，能很好实现信号在幅度、频率以及相位等方面的调节。本设计以Quartus2软件为工具，采用VHDL语言。 EDA技术设计的多功能移相式信号发生器使得数控系统具有更高的可靠性、实时性、高运算速度以及高集成度。同时由于EDA技术中FPGA芯片具有在系统可编程特性，因此该移项式信号发生器的设计可像软件一样随时更改，这就为系统地维护带来了方便。 关键词：DDS，数字信号发生器，频率，移相 Abstract: With the modern electronic measurement technology that can produce all kinds of signals in the digital waveform signal generator application of more and more, this paper, a DDS as the basic unit of the digital shift, I believe the generator design . After the phase-shifting digital signal and then convert the analog signal. DDS is a key digital technology can achieve very good signal in the range, frequency and phase, and other aspects of the regulation. Quartus2 to the design of the software tools for using VHDL language. EDA design technology of multi-phase-shift-enabled digital signal generator system with higher reliability, real-time, high-speed computing as well as the high level of integration. At the same time, due to the EDA technology with FPGA chip in-system programmable features, the shift of the signal generator can be the same as the software to change at any time, and this system has brought convenience to maintain. Key words: DDS, digital signal generators, frequency, phase-shifting |
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