【正文】 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 基于 DSP 的 PWM 波形發(fā)生器設(shè)計(jì) 學(xué)生姓名： 學(xué)生學(xué)號(hào)： 202120520215 院（系） 電氣信息工程學(xué)院 年級(jí)專(zhuān)業(yè)： 03 級(jí)電子信息工程 指導(dǎo)教師： 二 〇〇 七 年 六 月 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 摘要 Ⅰ 摘 要 PWM 波形發(fā)生器在 20 世紀(jì) 70 年代有了飛速的發(fā)展 ,20 世紀(jì) 80 年代 ,PWM 波形發(fā)生器已應(yīng)用到各個(gè)工程技術(shù)領(lǐng)域，例如在工業(yè)控制中可以用它來(lái)控制各種電機(jī)、電力電子設(shè)備、逆變器等 ,它 不管在軍用還是在民用系統(tǒng)中都發(fā)揮了積極的作用。 本文首先對(duì) PWM 波形發(fā)生器的基本原理和目前國(guó)內(nèi)外的發(fā)展?fàn)顩r做了簡(jiǎn)單介紹，然后介紹了基于 DSP 的應(yīng)用系統(tǒng) 的 開(kāi)發(fā)流程，并對(duì) DSP 的相關(guān)知識(shí)做了全面介紹，最后針對(duì)目前 波形發(fā)生器 的發(fā)展?fàn)顩r和實(shí)際生活中的應(yīng)用 ， 提出了基于DSP 的 PWM 波形發(fā)生器的設(shè)計(jì)方法。 論文完成了基本的硬件電路設(shè)計(jì)和軟件算法設(shè)計(jì)。硬件設(shè)計(jì)方面，基于 DSP芯片的相關(guān)特點(diǎn)，采用了 DSP 的 LF2407 芯片來(lái)完成本課題的硬件電路設(shè)計(jì)。軟件算法方面，根據(jù)要求采用了匯編語(yǔ)言進(jìn)行程序設(shè)計(jì)，并給出了相關(guān)的源程序以及調(diào)試過(guò)程，最后對(duì)本設(shè)計(jì)的可行性和性能誤差 進(jìn)行了分析。 關(guān)鍵詞 波形 發(fā)生器 ， LF2407 芯片 ， PWM， DSP 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） ABSTRACT Ⅱ ABSTRACT The pulsewidth modulation (PWM) profile generator had the rapid development in the 20th century, in 1980s, The PWM profile generator has applied each project area of technology, For example, it can be used to control each kind of electrical machinery in the industry, the electric power, electronic installation, the inversion and so on, no matter in military or in the civil system, it has all played the positive role. This article first has made the simple introduction to the PWM profile generator basic principle and the present domestic and foreign development condition, then introduced based on the digital signal processing (DSP) application system development flow, and has made the prehensive introduction to the DSP related knowledge, finally aimed at present in the development condition and the practical life application proposed based on the DSP PWM profile generator design method. This paper has pleted the basic hardware circuit design and the software arithmetic design. The hardware design aspect, according to the DSP chip related characteristic, this paper adopted the LF2407 of DSP chip to achieve the hardware circuit design. The software algorithm aspect, according to request, it adopted the assembly language to carry on the programming, and has produced the related source program as well as the debugging process, finally has carried on the analysis to this design feasibility and the performance error. Key words profile generator, LF2407 chip, pulsewidth modulation (PWM) digital signal processing(DSP) 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 目錄 1 目 錄 摘 要 ......................................................................................................................... ...Ⅰ ABSTRACT ................................................................................................................ Ⅱ 1 緒論 ............................................................................................................................ 1 引言 ................................................................................................................... 1 課題背景 ............................................................................................................ 1 PWM波形發(fā)生器簡(jiǎn)介 ................................................................................ 1 PWM波形發(fā)生器的研究發(fā)展?fàn)顩r ............................................................... 2 課題的研究目的和意義 ............................................................................ 3 本文的主要研究?jī)?nèi)容 ................................................................................ 3 2 DSP 開(kāi)發(fā)流程 ............................................................................................................ 4 DSP簡(jiǎn)介 ............................................................................................................ 4 DSP開(kāi)發(fā)方案的設(shè)計(jì)與選擇 ................................................................................ 5 DSP系統(tǒng)的功能需求分析 ......................................................................... 5 DSP算法的驗(yàn)證與模擬 ............................................................................. 6 DSP開(kāi)發(fā)工具的 選擇 ................................................................................ 6 DSP系統(tǒng)調(diào)試 ........................................................................................... 7 DSP系統(tǒng)設(shè)計(jì)開(kāi)發(fā)流程 ....................................................................................... 7 DSP處理器軟、硬件開(kāi)發(fā)工具簡(jiǎn)介 ...................................................................... 9 3 PWM 波形發(fā)生器的設(shè)計(jì)方法 .................................................................................. 12 常見(jiàn)的設(shè)計(jì)方法簡(jiǎn)介 ........................................................................................ 12 等脈寬 PWM法 ........................................................................................ 12 隨機(jī) PWM ................................................................................................ 12 非線(xiàn)性控制 PWM ..................................................................................... 13 等面積法 ............................................................................................... 13 硬件調(diào)制法 ............................................................................................ 13 空 間電壓矢量控制 PWM ........................................................................... 13 矢量控制 PWM ......................................................................................... 14 單元脈寬調(diào)制法 ..................................................................................... 14 本文所采用的設(shè)計(jì)方法 .................................................................................... 15 4 PWM 波形發(fā)生器的硬件設(shè)計(jì) .................................................................................. 17 PWM波形發(fā)生器硬件結(jié)構(gòu) .................................................................................. 17 PWM波形產(chǎn)生原理 .................................................................................. 17