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1、黃石理工學(xué)院畢業(yè)設(shè)計(jì)（論文）摘要轉(zhuǎn)速、電流雙閉環(huán)控制直流調(diào)速系統(tǒng)是性能很好、應(yīng)用最廣的直流調(diào)速系統(tǒng)。根據(jù)晶閘管的特性，通過調(diào)節(jié)控制角α大小來調(diào)節(jié)電壓?；谠O(shè)計(jì)題目，直流電動機(jī)調(diào)速控制器選用了轉(zhuǎn)速、電流雙閉環(huán)調(diào)速控制電路。在設(shè)計(jì)中調(diào)速系統(tǒng)的主電路采用了三相全控橋整流電路來供電。本文首先確定整個(gè)設(shè)計(jì)的方案和框圖。然后確定主電路的結(jié)構(gòu)形式和各元部件的設(shè)計(jì)，同時(shí)對其參數(shù)的計(jì)算，包括整流變壓器、晶閘管、電抗器和保護(hù)電路的參數(shù)計(jì)算。接著驅(qū)動電路的設(shè)計(jì)包括觸發(fā)電路和脈沖變壓器的設(shè)計(jì)。最后，即本文的重點(diǎn)設(shè)計(jì)直流電動機(jī)調(diào)速控制器電路，本文采用轉(zhuǎn)速、電流雙閉環(huán)直流調(diào)速系
2、統(tǒng)為對象來設(shè)計(jì)直流電動機(jī)調(diào)速控制器。為了實(shí)現(xiàn)轉(zhuǎn)速和電流兩種負(fù)反饋分別起作用，可在系統(tǒng)中設(shè)置兩個(gè)調(diào)節(jié)器，分別調(diào)節(jié)轉(zhuǎn)速和電流，即分別引入轉(zhuǎn)速負(fù)反饋和電流負(fù)反饋，二者之間實(shí)行嵌套聯(lián)接。從閉環(huán)結(jié)構(gòu)上看，電流環(huán)在里面，稱作內(nèi)環(huán)；轉(zhuǎn)速環(huán)在外邊，稱做外環(huán)。這就形成了轉(zhuǎn)速、電流雙閉環(huán)調(diào)速系統(tǒng)。先確定其結(jié)構(gòu)形式和設(shè)計(jì)各元部件，并對其參數(shù)的計(jì)算，包括給定電壓、轉(zhuǎn)速調(diào)節(jié)器、電流調(diào)節(jié)器、檢測電路、觸發(fā)電路和穩(wěn)壓電路的參數(shù)計(jì)算然后最后采用MATLAB/SIMULINK對整個(gè)調(diào)速系統(tǒng)進(jìn)行了仿真分析。關(guān)鍵詞：雙閉環(huán)；轉(zhuǎn)速調(diào)節(jié)器；電流調(diào)節(jié)器黃石理工學(xué)院畢業(yè)設(shè)計(jì)（論文）Abstrac
3、tSpeedandcurrentdoubleclosed-loopD.CgovernorsystemisaD.Cspeedcontrolledsystemwhichhasfairlygoodperformanceandthemostextensiveapply.Basedonthecharacteristicofthyristor,itadjustsvoltagebyregulatingthetriggerangle“α”ofSCR.Inpaper,D.Cmotorspeedcontrollerisusingofcurrentandspeeddoub
4、leclosed-loopspeedcontrolcircuit.Theenergyofpowercircuitissuppliedofthree-phasefull-bridgecontrolledrectifier.Firstly,determinestheentiredesigntheplanandthediagram.Secondly,makesurethestructureofpowercircuitandthedesignofelements,andcalculatetheelementparameter，includingrectifi
5、ertransformer,thyristor,reactorandprotectioncircuit.Thirdly,actuatestheelectriccircuitthedesignincludingtotriggertheelectriccircuitandthepulse.Last,Thepapermainlyfocusesonthedesignofspeedcontrollercircuit.Inordertorealizetherotationalspeedandtheelectriccurrenttwokindofnegativef
6、eedbacks,mayestablishtworegulatorsinthesystem,adjuststherotationalspeedandtheelectriccurrentseparately,namelyintroducestherotationalspeednegativefeedbackandtheelectriccurrentnegativefeedbackseparately,betweenthetwoimplementsthenestingjoint.Makesurethestructureofthecircuitanddes
7、igntheelementsfirstly,then,calculatetheelementparameter,includingthesettlingvoltage,speedregulator,currentregulator,triggercircuit,detectioncircuitandVoltage-StabilizingCircuit.Secondly,thepapersimulatethespeedcontrolsystemwithMATLAB/SIMULINK.keywords：twoclosed-loop;currentregu
8、lator;speedregulator黃石理工學(xué)院畢業(yè)設(shè)計(jì)（論文）目錄前言11緒論21.1直流調(diào)速系統(tǒng)的概
