转速闭环直流调速设计摘要

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1、摘要本设计是关于电枢调压、磁场不可逆直流调速系统。电枢回路采用晶闸管三相全控桥式整流调压电路，磁场回路采用桥式不可控整流电路,速度调节器采用带微分负反馈的比例-积分（PI）结构以实现转速稳态无静差，电流超调量5%，转速超调量5%等指标，采用电流截止负反馈以限制动态过程的冲击电流。我们采用频域方法初步设计了转速闭环直流调速系统，给出了直流调速系统框图、参数计算方法与结果，并运用MATLAB/SIMULINK对系统进行了仿真。通过仿真，调节各项参数，得到了比较理想的结果。实践表明，这种采用频域初步设计和系统仿真相结合的转速闭环直流调速系统的设计方法，方便获得系统良好的动态性能和控

2、制效果，从而使直流调速系统的设计和调试变得更简单、经济、方便。关键词:闭环直流调速系统；截止负反馈；MATLAB/SIMULINK仿真Designonclosed-loopcontrolofDCspeedregulationsystemAbstractThesystemwhatwehavedesignedisthatthemagneticfieldwhichcan’trevearse,thearmaturevolateisstablewithouterrorDCspeedregulationsystem.thearmaturefieldcircuitisthree-phase

3、fullwasebridgeretifier,themagneticfieldcircuitisarectifiedcircuitthatisn’tcontrolled.thestablerealizationwithouterror,thesigmaandwhicharenotover5%byusingPImodulator,tolimitimpactingcurrentbyusingcutingoffnegativefeedbackwhilespeedoveriegalationbyusingoverspeedandlimitspeed.Wedesignedtheclos

4、ed-loopcontrolofDCspeedregulationsysteminthefrequencywayandgavethestructiondrawingofitsparameterscalcuation,thenwemadeuseoftheMATLAB/SIMULINKtosimulatetheresultsbasedonthedesigningofDCspeedregulationsystem’stheories,Weregulatedtheparametesintheprocessofsimulation,thenwegotthegoodresultswhat

5、wewanted.ThepracticemanifeststhemethodthatisthefrequencywaytogetherwithMATLAB/SIMULINKsimulationispracticalanduseful,becausetheDCspeedregulationsystemwehavedesignedhasthegoodanddynamicfunctionwiththecontrolableresultssoastomaketheDCspeedregulationsystembrief,moreeconomical,moreconvenient.Ke

6、ywords:Closed-loopcontrolofDCspeedregulationsystem;Cuttingoffnegativefeedback;MATLAB/SIMULINKsimulation