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摘??? 要

本文介紹了用PWM實現直流電機調整的基本方法。本文在給出直流電機調整和PWM實現方法的基礎上,提供一種用單片機軟件實現PWM調速的方法,以及直流電機調速的相關知識和PWM調整的基本原理和實現方法.介紹了基于MCS-51單片機用軟件產生PWM信號的途徑，在給出直流電機調整的實現方法的基礎上，提供一種用單片機軟件實現調速的方法。系統以8051單片機為核心,以小直流電機為控制對象,實現速度單閉環、PID控制．方便的人機對話接口,用鍵盤輸入有關控制信號及參數,可以實現電機的啟制動、正反轉、速度調節．并在LED上實時顯示輸入參數及動態轉速．詳細給出調速系統的主電路原理圖及各部分電路原理圖，主要包括MCS-51電路，電源，鍵盤和顯示電路，驅動電路，最后畫出程序流程圖.

關鍵詞：MCS-51；PWM；硬件；直流電機

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ABSTRACT

The paper introduces a basic kind of method of DC-motor speed modification based on PWM theory. Showing some relative knowledge upon DC motor speed modification, the PWM theory and the way to implement. It emphasizes on the way for carrying out PWM signals based on MCS-51. Taking 8051 Single Chip Micyoco as core and the little direct current motor as control object, the single closed loop speed control and PID control were realized. In the convenient man-machine interaction interface,the control signal and parameter were inputted with keybaord.so that the start and brake of motor and speed regulation were also realized. Provided main electric circuit principle diagram and each parts of electric circuit principle diagram, mainly include electric circuits MCS-51s, power supplies, keyboard and manifestation electric circuit, drive electric circuit, draw a procedure flow chart finally.

Keyword: MCS-51 ；PWM ；Hardware ；DC Motor

目錄 TOC \o "1-3" \h \z \u

HYPERLINK \l "_Toc231388417"摘??? 要 PAGEREF _Toc231388417 \h I

HYPERLINK \l "_Toc231388418"ABSTRACT PAGEREF _Toc231388418 \h II

HYPERLINK \l "_Toc231388419"1 緒論 PAGEREF _Toc231388419 \h 1

HYPERLINK \l "_Toc231388420"1.1課題研究的背景及意義 PAGEREF _Toc231388420 \h 1

HYPERLINK \l "_Toc231388421"1.2 PWM整流電源發展概況 PAGEREF _Toc231388421 \h 1

HYPERLINK \l "_Toc231388422"1.3本課題的來源，研究意義和研究目標 PAGEREF _Toc231388422 \h 2

HYPERLINK \l "_Toc231388423"2 PWM整流技術的現狀 PAGEREF _Toc231388423 \h 3

HYPERLINK \l "_Toc231388424"2.1 PWM整流研究概述 PAGEREF _Toc231388424 \h 3

HYPERLINK \l "_Toc231388425"2.2 PWM整流的基本原理 PAGEREF _Toc231388425 \h 5

HYPERLINK \l "_Toc2

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