DSP任意波形信号发生器毕业设计

目录

摘 要 (2)

Abstract (3)

1 绪论 (4)

1.1概述 (4)

1.2选题的目的、意义 (4)

1.3 选题的背景 (5)

1.4 本文所研究的内容 (6)

2 波形信号发生器的原理及方案选择 (7)

2.1任意波形信号发生器的原理 (7)

2.1.1 直接模拟法 (7)

2.1.2 直接数字法 (7)

2.2 任意波形发生器的设计方案 (9)

2.2.1 查表法 (9)

2.2.2计算法 (9)

2.2.3传统方法 (10)

3 基于DSP 5416的任意波形信号发生器的软件设计 (12)

3.1 TMS320C5416的开发流程 (12)

3.2软件开发环境 (13)

3.3任意波形信号发生器的软件编程 (14)

3.3.1 计算法实现波形输出 (14)

3.3.2 D/A转换 (15)

3.3.3波形控制及软件设计流程图 (16)

3.4参数的设定 (18)

4 基于DSP 5416的任意波形信号发生器的硬件设计 (20)

4.1 TMS320VC5416开发板 (20)

4.2 TMS320VC5416实验箱的连接 (23)

4.3 波形信号发生器的硬件测试过程 (23)

5 任意波形信号发生器展望 (28)

结束语 (29)

致谢 (30)

参考文献 (31)

摘 要

任意波形发生器是信号源的一种，它是具有信号源所具有的特点，更因它高的性能优势而倍受人们青睐。信号源主要给被测电路提供所需要的已知信号（各种波形），然后用其它仪表测量感兴趣的参数。可见信号源在各种实验应用和试验测试处理中，它不是测量仪器，而是根据使用者的要求，作为激励源，仿真各种测试信号，提供给被测电路，以满足测量或各种实际需要。

随着无线电应用领域的扩展，针对广播、电视、雷达、通信的专用信号发生器获得了长足的发展，表现在载波调制方式的多样化，从调幅、调频、调相到脉冲调制。如果采用多台信号发生器获得测量信号显然是很不方便的。因此需要任意波形发生器（Arbitrary Waveform Generator，AWG），使其能够产生任意频率的载频信号和多种载波调制信号。

目前我国已经开始研制任意波形发生器，并取得了可喜的成果。但总的来说，我国任意波形发生器还没有形成真正的产业。并且我国目前在任意波形发生器的种类和性能都与国外同类产品存在较大的差距，因此加紧对这类产品的研制显得迫在眉睫。

本文主要工作分为以下几个方面：首先，介绍研制任意波形信号发生器的目的、意义、背景，以及利用CCS仿真工具用软件实现任意波形信号发生器的的过程 ；之后，对硬件的连接及测试结果作介绍；最后，简要的对任意波形信号发生器的未来作一下展望。

关键词：DSP，任意波形信号发生器,DDS

Abstract

The Arbitrary Waveform Generator is one kind of the signal source, it has the characteristics that there are the signal sources, favored by people because of its high performance advantage. The signal source provides the known signals needed for circuit-under-test mainly (various kinds of waveforms), then measure the parameter that is interested in with other instrument. It is obvious the signal source is used and test testing while dealing with in various kinds of experiments, it is not a measuring instrument, but according to the request of user, as encourage source, emulation various kinds of test signal, offer to the circuit-under-test, in order to meet measurement or various kinds of actual needs.

With the application of the radio expansion against radio, television, radar, communications, the special signal generator is a considerable development. It is perform of the carrier modulation diversification, AM, FM, phase of the pulse modulation. It is obviously very convenient if using multiple signal generators was measured signal. so arbitrary waveform generator (Arbitrary Waveform Generator. AWG) is required, it can generate arbitrary frequency of the carrier frequency signal and various carrier modulation signal.

Our country has already begun to develop the Arbitrary Waveform Generator at present, make the gratifying achievement. But generally speaking, the generator of Arbitrary Waveform Generator of our country has not formed the real industry yet. And our country all have greater disparity with the foreign like product in the kind and performance of the Arbitrary Waveform Generator at present, so step up seeming extremely urgent to the reseach of this kind of product..

The following is the main task of the article：

First, I'll introduce the notion, meaning and development history of AGW. The next part is used the simulation software tools of CCS to achieve arbitrary waveform generator , And then I'll introduce right hardware and connectivity test results; Finally, I'll prospect the arbitrary waveform generator for about future.

Keyword: DSP，Arbitrary Waveform Generator, DDS