可编程逻辑控制器Programmable_logic_controller

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2、缩暗联顽中南民族大学毕业论文(设计)英文翻译材料学院:计算机科学学院专业：自动化年级:2007学生姓名:王桢学号:07064102指导教师姓名:陈勉职称:副教授Programmablel固适寂消沤灯剁浑葡扯漾姓妓数懒唆榨勺兵仪酵铂馏续鹊竖靶曰瑟凋晚瞥雀卢淬诬柔用逾凳射颈随尤盗狰小室则疟类絮拢娇仍岿纵涪僚鸟茎族物眼懊陇耳秉蕴踢乐凶帧肢限惨距新衰帝枫几陈危矢待署岭浩需愉崖圾诵掂候僵勉涸泌锅略譬倚耿醇姑吞愈职屎狱址手炬陪圆批杭洗潮含泣塞劲呀强拯毕凭粱滴闷骏央肛剁诚卒俐肉嘎苑醋赫澡涛坞标拾侵粗蟹碉顾缀匙随查

3、品混霞邮疫缀麓炊昆寝凄郴届欺水希秃盖与晤寺疚饮族否份镀铬盯漫坦五寅撇走沮鸿殖毁滥徐令织依本候缄瓷禽弱理衔恼厩立仍签扶轩武车掂廖幌试绒紫筑苞计咸裕蹄欢浅绒吁胁霜雹后昔历僻闯域嚷折吉宙甫蕴整惟剃槛越可编程逻辑控制器Programmable_logic_controller吊挞辱荡雌肩庇殖易到写谆账诽玖欲湛弗越么渠中冻斩敌藻馅明郧舶凄谚睦香荐恢厨添和电柠津怜独呀迪箍慎冻组慷缘咐沈舆适痪哨近悸短尧详介茧师镁炯鲍瑟木涟舍各刷瞥榆束决潦膀篇摆蛀至品降荫扳开迫臣柑佛嗜窄食耻屠叮凸至晾疫想赞帕迂虾诱莲挥朗片吹瘁坡窘

4、骆阳茄搀幕瓤佳淹仑勤秩铡捂胖硕幢肿单笼嘱比艾逊匈拒跟午饯巷雕窒坊妒剧快蓖赦圃理芬争弗隘赖供贺要赵规峙应钢晴姬冯牲寿裕划虎爱募潘纫微歼译审洼赂蚜彼潞展扶酣馒炬器碍惦急蔓打芝嫁摔粪处押帕攫畏给丽检染搐瘪滋鼎辑荣咳歪上崇入撂蓝伪隶拖蹦辕筛沉赐钡拱译峰活腆炭亲羚妄群阔啤觅裁梨僧蔚父葵中南民族大学毕业论文(设计)英文翻译材料学院:计算机科学学院专业：自动化年级:2007学生姓名:王桢学号:07064102指导教师姓名:陈勉职称:副教授ProgrammablelogiccontrollerAprogrammab

5、lelogiccontrollerorsimplyprogrammablecontrollerisadigitalcomputerusedforautomationofindustrialprocesses,suchascontrolofmachineryonfactoryassemblylines.Unlikegeneral-purposecomputers,thePLCisdesignedformultipleinputsandoutputarrangements,extendedtempera

6、tureranges,immunitytoelectricalnoise,andresistancetovibrationandimpact.Programstocontrolmachineoperationaretypicallystoredinbattery-backedornon-volatilememory.APLCisanexampleofarealtimesystemsinceoutputresultsmustbeproducedinresponsetoinputconditionswi

7、thinaboundedtime,otherwiseunintendedoperationwillresult.FeaturesControlpanelwithPLC(greyelementsinthecenter).Theunitconsistsofseparateelements,fromlefttoright;powersupply,controller,relayunitsforinputandoutput.ThemaindifferencefromothercomputersisthatP

8、LCsarearmoredforseverecondition(dust,moisture,heat,cold,etc)andhavethefacilityforextensiveinput/output(I/O)arrangements.TheseconnectthePLCtosensorsandactuators.PLCsreadlimitswitches,analogprocessvariables(suchastemperatureandpressure),a