車輛發(fā)電總成自動(dòng)測(cè)試系統(tǒng)設(shè)計(jì)

電氣自動(dòng)化論文編號(hào):ZD395  論文字?jǐn)?shù):21424,頁數(shù):49 有開題報(bào)告，任務(wù)書，文獻(xiàn)綜述，CAD圖

目   錄
摘  要  Ⅰ
Abstract Ⅱ
第1章 緒 論 1
1.1車輛發(fā)電總成的結(jié)構(gòu)及其原理 1
1.2試驗(yàn)要求 2
 1.2.1轉(zhuǎn)速特性 2
 1.2.2負(fù)載特性 2
 1.2.3耐久特性 2
第2章 總體方案設(shè)計(jì) 3
2.1方案論證 3
 2.1.1調(diào)速方案的論證 3
 2.1.2控制部件的選擇 9
 2.1.3控制方案的論證 13
 2.1.4電量測(cè)量方案的論證 14
2.2方案的確定 14
第3章 系統(tǒng)硬件部分設(shè)計(jì) 16
3.1模擬負(fù)載的選取 16
3.2變頻電機(jī)及變頻器的選擇 16
 3.2.1變頻電機(jī)的選擇 16
 3.2.2變頻器的選擇 17
 3.2.3變頻調(diào)速系統(tǒng)的抗干擾措施 20
3.3 PLC選型及I/O口分配 20
 3.3.1 PLC的選型 20
 3.3.2 PLC I/O接口的分配 21
3.4繼電器的選擇 22
3.5接觸器的選擇 22
 3.5.1 KM的選擇 22
 3.5.2 KM1-KM11的選擇 23
3.6線路設(shè)計(jì) 23
3.7元器件明細(xì)表 24
第4章 系統(tǒng)軟件部分設(shè)計(jì) 25
4.1系統(tǒng)工作原理 25
4.2順序功能圖 25
4.3系統(tǒng)工作梯形圖 26
 4.3.1轉(zhuǎn)速特性 27
 4.3.2負(fù)載特性 29
 4.3.3耐久特性 30
參考文獻(xiàn) 32
致    謝 33
附錄  程序清單 34

摘  要： 在對(duì)車輛發(fā)電總成的測(cè)試中，傳統(tǒng)測(cè)試系統(tǒng)的自動(dòng)化程度不高，隨著現(xiàn)代科學(xué)技術(shù)的不斷發(fā)展，生產(chǎn)率的提高以及勞動(dòng)力成本的不斷上升，研發(fā)一種能自動(dòng)完成對(duì)發(fā)電總成測(cè)試的系統(tǒng)就顯得系統(tǒng)非常必要。本課題著重于完成系統(tǒng)對(duì)發(fā)電總成輸出電量自動(dòng)測(cè)試功能的設(shè)計(jì)：
 在該系統(tǒng)中，我們選用一個(gè)采用變頻調(diào)速的電動(dòng)機(jī)來帶動(dòng)發(fā)電總成的發(fā)電機(jī)模擬其在各種不同轉(zhuǎn)速下的工作特性；用一個(gè)模擬負(fù)載箱模擬發(fā)電總成在不同負(fù)載條件下的工作特性；利用電磁繼電器動(dòng)作電壓可調(diào)節(jié)的優(yōu)點(diǎn)，我們采用幾組過電壓和欠電壓繼電器來達(dá)到測(cè)試輸出電壓是否滿足要求的效果；而控制起動(dòng)機(jī)的變頻器及模擬負(fù)載的工作，則通過PLC的控制來實(shí)現(xiàn)，同時(shí)，PLC還對(duì)整個(gè)系統(tǒng)的運(yùn)行起著控制和監(jiān)管的作用。

關(guān)鍵詞： 車輛發(fā)電總成；自動(dòng)測(cè)試；PLC；變頻調(diào)速 
   
 
 The Vehicle Generates Electricity System And Tests The System To Design Automatically

Abstract：To the test that always becomes that the vehicle generates electricity,The automatic degree to test system of tradition is not high,With the constant development of the modern science and technology,Improvement of the productivity and constant rising of the labor cost,Research and develop one can finish to generate electricity system tested to become seem system very much essential always automatically.Whether subject this is it finish system is it output electric consumption test design of function automatically to become always generating electricity to focus on.
 In this system, we select for use one adopt frequency conversion transfer motor of speed is it drive generator simulation his performance characteristics under all kinds of rotational speed become always to generate electricity to come;Is it become in different load performance characteristics under the terms always to generate electricity with one simulation load case simulation;Advantage of utilizing electromagnetic relay movements to be adjustable in voltage, we adopt several group voltage and owe voltage relay to get the result of it meets the demands to test the voltage of outputtinging;Control frequency converter and simulation work of load of starter , is it realize to come through the control of PLC, meanwhile, PLC still plays a role in controlling and supervising to the operation of the whole system.

Keywords:：The vehicle generates electricity system； tests automatically； PLC； frequency conversion adjusts the speed