HEF4752為核心的交流調(diào)速系統(tǒng)控制電路模板的設(shè)計與開發(fā)

電子機電論文編號:JD486  附開題報告,任務(wù)書,原理圖,PCB,論文字?jǐn)?shù):23717,頁數(shù):51 

目 錄
前  言...................................................................... 3
第一章  緒論 ..................................................................4
1.1 課題背景與意義 ............................................................4
1.2論文內(nèi)容與安排 .............................................................4
第二章 交流變頻調(diào)速系統(tǒng) .......................................................6
2.1交流調(diào)速系統(tǒng) ...............................................................6
2.1.1 交流調(diào)速系統(tǒng)的特點 ......................................................6
2.1.2交流調(diào)速系統(tǒng)的分類 .......................................................6
2.1.3交流調(diào)速系統(tǒng)的發(fā)展趨勢 ...................................................7
2.2交流變頻調(diào)速的基本原理 .....................................................8
2.2.1交流異步電動機變頻調(diào)速原理 ...............................................8
2.2.2變頻調(diào)速系統(tǒng)的控制方式 ...................................................9
第三章 脈寬調(diào)制控制技術(shù) ......................................................12
3.1脈寬調(diào)制控制的方法 ........................................................12
3.2正弦波脈寬調(diào)制（SPWM）法 ..................................................13
3.2.1 基本思想 ...............................................................13
3.2.2 SPWM信號的調(diào)制方式 .....................................................14
3.3 SPWM脈沖的生成方法 .......................................................15
3.3.1完全由模擬電路生成 ......................................................15
3.3.2 由專用集成芯片生成 .....................................................16
第四章 控制電路的設(shè)計 ........................................................24
4.1 系統(tǒng)原理圖 ...............................................................24
4.2 給定積分器電路 ...........................................................25
4.3 絕對值運算電路 ...........................................................27
4.4 電壓-頻率變換器電路 ......................................................28
4.5 函數(shù)發(fā)生器電路 ...........................................................29
4.6 多諧震蕩器電路 ...........................................................30
4.7極性鑒別電路 ..............................................................33
第五章 電路的硬件圖及PCB圖....................................................34
5.1 Protel  99SE功能介紹 .....................................................34
5.2 硬件原理圖的繪制..........................................................35
第六章  總結(jié) .................................................................37
6.1論文總結(jié)...................................................................37
6.2 感想 ...................................................................37
致   謝 ....................................................................38
參考文獻(xiàn) .....................................................................39
附錄1：英文資料...............................................................40
附錄2：英文翻譯...............................................................46
附錄3：原理圖及PCB圖   

摘 要

 在許多自動控制系統(tǒng)中，都需要有穩(wěn)定的三相PWM發(fā)生電路。本文介紹了以大規(guī)模全數(shù)字集成電路HEF4752為核心設(shè)計的三相 PWM發(fā)生電路，結(jié)構(gòu)簡單，使用方便，易于控制。本文還介紹了芯片HEF4752的腳管功能、內(nèi)部結(jié)構(gòu)及工作原理，同時描述了這種電路在變頻調(diào)速系統(tǒng)中的重要應(yīng)用。由HEF4752產(chǎn)生三相基波頻率、幅值和死區(qū)時間可調(diào)的SPWM波形，實現(xiàn)電動機的變頻調(diào)速控制。最后運用Protel99SE軟件繪制出該系統(tǒng)的硬件原理圖和PCB圖。該系統(tǒng)雖然僅用硬件來實現(xiàn)，但結(jié)果表明以HEF4752為主要控制芯片的SPWM波形發(fā)生器結(jié)構(gòu)簡單、成本低、性能好、調(diào)試方便、運行可靠。

關(guān)鍵詞：HEF4752  變頻調(diào)速  正弦脈寬調(diào)制技術(shù)  PCB

ABSTRACT

In a lot of automatic controling systems, the steady occurring three-phase PWM circuit is needed.This paper describes the new type occurning three-phase PWM circuit which the numeral IC HEF4752 is core, and introduces the mounts, the construction and function of the IC HEF4752. The construction of  this circuit is very simple. The circuit is controlled easily and used expendiently. At last the software Protel 99SE is used to the draw the SCH and PCB. Although the system achieve only by the hardware , but the results showed that the main control to IC HEF4752 chip SPWM waveform generator is simple, low cost, performance, and debugging convenient, reliable operation.

Key words：HEF475  Frequency converted speed  SPWM  PCB