5、自动化水平高。解决了匀速交流传动中浪费能源的问题,节能效果显著,能广泛应用于通风系统等各个地方。关键字:PLC,变频调速,自动化,通风机39金陵科技学院学士学位论文AbstractVariablespeed fan controlsystembasedonPLCAbstractInrecentyears, China's fan varietiesof variousvarietiesof fan emergeinanendlessstream alsohas thedifferentfeatures
6、 ofthe controlmode. About ourtraditional fan type,will maintain fullpowerandoperation stateof ventilationsystem inmostcases, andbecausethecontrolmodeof themaincontrolsystem is therelaycontrol, sothesystem cannotbemonitored andunstable, itwill have tocon
7、sumealotofenergy, becauseofthesedefects,wemust to improve thecurrent fan controlsystem. Therefore, intheworld of designandResearchoncontrolsystemof ventilation machine is basedonthePLCcontrol, thegoal istorealize the automationandmechanization ofcoalmin
8、ework, soasto save energy, isomersafeandreliable ventilationsystem. Thissystembasedonthe ventilationenvironmentinCoalMine Basedon creating model, themaincontrolobjectisa truefan, themaincomponentsofthis systemisusedin Siemens typ