模擬電子技術(shù)課程設(shè)計報告(共15頁)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上成績 課程設(shè)計報告 題 目 方波、三角波、正弦波信號 發(fā)生器設(shè)計 課 程 名 稱 模擬電子技術(shù)課程設(shè)計 院 部 名 稱 機電工程學(xué)院 專 業(yè) 10自動化 班 級 10自動化 學(xué) 生 姓 名 吉鈺源 學(xué) 號 課程設(shè)計地點 C206 課程設(shè)計學(xué)時 1周 指 導(dǎo) 教 師 趙國樹 金陵科技學(xué)院教務(wù)處制目錄1、緒論······················&#

2、183;·················································&#

3、183;·······················3 1.1相關(guān)背景知識························

4、83;·················································

5、83;······3 1.2課程設(shè)計目的·········································

6、3;·······································31.3課程設(shè)計的任務(wù)·········

7、;··················································

8、;···················3 1.4課程設(shè)計的技術(shù)指標(biāo)····························

9、83;···········································32、信號發(fā)生器的基本原理····&#

10、183;·················································&#

11、183;·················4 2.1總體設(shè)計思路······························

12、83;·················································

13、83;42.2原理框圖················································&

14、#183;······································43、各組成部分的工作原理·········

15、··················································

16、·············5 3.1 正弦波產(chǎn)生電路···································

17、;··········································5 3.1.1正弦波產(chǎn)生電路·····

18、83;·················································

19、83;··················5 3.1.2正弦波產(chǎn)生電路的工作原理····························&#

20、183;······························6 3.2 正弦波到方波轉(zhuǎn)換電路················

21、3;·················································

22、3;·7 3.2.1正弦波到方波轉(zhuǎn)換電路圖·············································

23、3;················7 3.2.2正弦波到方波轉(zhuǎn)換電路的工作原理······························

24、····················8 3.3 方波到三角波轉(zhuǎn)換電路···························&#

25、183;········································9 3.3.1方波到三角波轉(zhuǎn)換電路圖······&#

26、183;·················································&#

27、183;·····9 3.3.2方波到三角波轉(zhuǎn)換電路的工作原理········································

28、3;·········104、電路仿真結(jié)果·······································

29、············································114.1正弦波產(chǎn)生電路的仿真結(jié)果···&

30、#183;·················································&

31、#183;········114.2 正弦波到方波轉(zhuǎn)換電路的仿真結(jié)果·····································

32、3;··············114.3方波到三角波轉(zhuǎn)換電路的仿真結(jié)果································&#

33、183;····················135、電路調(diào)試結(jié)果···························

34、3;·················································

35、3;·····13 5.1正弦波產(chǎn)生電路的調(diào)試結(jié)果·········································

36、3;····················13 5.2正弦波到方波轉(zhuǎn)換電路的調(diào)試結(jié)果··························&

37、#183;··························14 5.3方波到三角波轉(zhuǎn)換電路的調(diào)試結(jié)果···················

38、3;·································146、設(shè)計結(jié)果分析與總結(jié)··············

39、83;·················································

40、83;·········151、緒論1.1相關(guān)背景知識由于物理學(xué)的重大突破，電子技術(shù)在20世紀取得了驚人的進步。特別是近50年來，微電子技術(shù)和其他高技術(shù)的飛速發(fā)展，致使農(nóng)業(yè)、工業(yè)、科技和國防等領(lǐng)域發(fā)生了令人矚目的變革。與此同時，電子技術(shù)也正在改變著人們?nèi)粘Ｉ?。在電子技術(shù)中，信號發(fā)生器是一種能夠產(chǎn)生多種波形,如三角波、鋸齒波、矩形波（含方波）、正弦波的電路被稱為函數(shù)信號發(fā)生器。函數(shù)信號發(fā)生器在電路實驗和設(shè)備檢測中具有十分廣泛的用途，可以用于生產(chǎn)測試、儀器維修和實驗室，還廣泛使用在其它科技領(lǐng)域，如醫(yī)學(xué)、教育

41、、化學(xué)、通訊、地球物理學(xué)、工業(yè)控制、軍事和宇航等。它是一種不可缺少的通用信號源。1.2課程設(shè)計目的 通過本次課程設(shè)計所要達到的目的是：增進自己對模擬集成電路方面所學(xué)知識的理解，提高自己在模擬集成電路應(yīng)用方面的技能，樹立嚴謹?shù)目茖W(xué)作風(fēng)，培養(yǎng)自身綜合運用理論知識解決實際問題的能力。通過電路設(shè)計初步掌握工程設(shè)計方法，逐步熟悉開展科學(xué)實踐的程序和方法，為后續(xù)課程的學(xué)習(xí)和今后從事的實際工作提供引導(dǎo)性的背景知識，打下必要的基礎(chǔ)。1.3課程設(shè)計的任務(wù) 設(shè)計一個方波、三角波、正弦波函數(shù)發(fā)生器；能同時輸出一定頻率一定幅度的三種波形：正弦波、方波和三角波；用±12V電源供電；先對課程設(shè)計任務(wù)進行分析，及

42、根據(jù)參數(shù)的確定選擇出一種最適合本課題的方案。在達到課題要求的前提下保證最經(jīng)濟、最方便、最優(yōu)化的設(shè)計策略。然后運用仿真軟件Multisim對電路進行仿真，觀察效果并與課題要求的性能指標(biāo)作對比。仿真成功后，用實物搭建電路，進行調(diào)試，觀測示波器輸出的波形。1.4課程設(shè)計的技術(shù)指標(biāo) 設(shè)計、組裝、調(diào)試信號發(fā)生器；輸出波形：正弦波、方波、三角波；頻率范圍在10Hz10000Hz范圍內(nèi)可調(diào)；比較器用LM339,運算放大器用LM324，雙向穩(wěn)壓管用兩個穩(wěn)壓管代替。2、信號發(fā)生器的基本原理2.1 總體設(shè)計思路本次課程設(shè)計要求設(shè)計方波、正弦波、三角波函數(shù)發(fā)生器，產(chǎn)生正弦波、方波、三角波的方案，所以結(jié)合課本【1】所

43、學(xué)知識，我將設(shè)計思路定位如下：先產(chǎn)生正弦波信號，然后通過整形電路將正弦波變成方波，再由積分電路將方波變成三角波。其中，根據(jù)課本9.6RC正弦波震蕩電路可知RC正弦波震蕩電路有橋式振蕩電路、雙T網(wǎng)絡(luò)式和移相式振蕩電路等類型。這里主要采用橋式振蕩電路來產(chǎn)生正弦波，并采用二極管進行穩(wěn)幅，獲得穩(wěn)定輸出的正弦波。由課本9.8.1電壓比較器得，過零比較器是單門限電壓比較器，即輸入電壓Vi每次過零時，輸出就要產(chǎn)生突然的變化，在高電位和低電位間相互切換，因而產(chǎn)生了方波。用集成運放構(gòu)成的電壓比較器可以用加限幅措施，避免內(nèi)部管子進入深度飽和區(qū)，來提高相應(yīng)速度。方波的函數(shù)表示形式是常數(shù)函數(shù)，對常數(shù)函數(shù)進行積分則可以得到一次線性函數(shù)，用圖像表示為以直線，所以考慮到用積分電路將方波變?yōu)槿遣ā?.2 原理框圖 總體框架結(jié)構(gòu)示意圖： 積分電路整形電路三角波方波正弦波 已設(shè)計信號發(fā)生器模擬電路圖：產(chǎn)生三角波產(chǎn)生方波正弦波信號發(fā)生器 已設(shè)計信號發(fā)生器實物圖：3、各組成部分的工作原理 3.1正弦波產(chǎn)生電路3.1.1 正弦波產(chǎn)生電路圖3.1.2 正弦波產(chǎn)生電路的工作原理1.電路組成由上圖可知，正弦波由RC橋式振蕩電路。RC橋式振蕩電路由選頻網(wǎng)絡(luò)和放大電路組成。其中，選頻網(wǎng)絡(luò)有RC串、并聯(lián)組成，屬正反饋