毕业论文：基于FPGA数字化正弦波的实现.doc

西安工程大学 学士毕业论文 PAGE  PAGE 48 - - 摘 要 正弦波在许多领域有着广泛的应用。理论上由搭建的模拟电路生成的正弦波可以做到非常理想,但是在实际的应用中由于电路元件的老化、温漂、和设备升级的不便等因素，使其在应用中可能会出现不稳定等各种各样的缺陷。随着数字电路集成度的不断提高,数字化的正弦波正在越来越多的取代传统的模拟正弦波。 通常生成数字化正弦波，可以采用A/D转换和查表的方法，其基本原理都是建立在对时间的等分上。本文提出了一种新方法即对幅值等分,基于ALTERA公司提供的CycloneⅡ芯片作为核心器件进行设计，来实时生成完美数字化正弦调制波，并对该方法进行了的误差分析，最终给出了基于FPGA的实现方案。 仿真结果表明了这种新方法可以获得完美的数字化正弦调制波。 关键词：幅值等分， FPGA， VHDL，模块化设计 ABSTRACT Sinusoidal wave has broad application in many areas. Theoretically generated by the erection of the sinusoidal wave circuit simulation can do very good, but in practical applications due to the aging circuit components, and equipment upgrades inconvenience and other factors that may arise in the application of its instability, a variety of errors. With integrated digital circuits for continual increase in the digital sine wave is increasingly replacing traditional analog sinusoidal wave. Usually generated digital sine wave, and can be used A/D Zhabiao conversion method, the basic principles are based on the length of time. This article presents a new approach that is worth equal to that provided for ALTERA company Cyclone II chips as a core device design to real-time generation record perfect digital sine wave, and the methods of error analysis, based on FPGA given the ultimate realization of the programme. Simulation results show that the new method can perfactly record digital sine wave. KEY WORDS: worth republic , FPGA, VHDL, Module-designing. 目 录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc138403326 摘 要  PAGEREF _Toc138403326 \h 1  HYPERLINK \l _Toc138403327 ABSTRACT  PAGEREF _Toc138403327 \h 2  HYPERLINK \l _Toc138403328 目 录  PAGEREF _Toc138403328 \h 3  HYPERLINK \l _Toc138403329 第一章 前 言  PAGEREF _Toc138403329 \h 5  HYPERLINK \l _Toc138403330 1.1 逆变技术概述  PAGEREF _Toc138403330 \h 5  HYPERLINK \l _Toc138403331 1.2 数字化正弦波的概述  PAGEREF _Toc138403331 \