plc在精密挤出成型设备控制系统中的应用_许红.pdfVIP

17 　5 　　　 V ol.17, N o.5 200 3 5 CHINA PLAS ICS M ay, 2003 PLC 许　红, 吴大鸣 (, 100029 ) 　:(P LC), , , 。 　　:;;;; :T Q320.5 　　:B 　　:100 1-9278 (200 3)05-0074-04 Application of PLC in Control Systems for Precise Extrusion Equipment X U Hong, W U Da-ming (Institute o Plastics M achinery Plastics Engineering, Beijing University o Chemical Technology, Beijing 100029, China) Abstract:It w as int roduced that how programm able logic controller (P LC)and unctional modules in control systems or precise ext ru sion equipment w ere applied to realize the cont rol o r precise ex trusion. An analy sis o act ors in luencing the quality o ext ru sion and several closed loop cont rol systems in con- t rol process w as made to demonst rate how to actualize precise ext ru sion . Key words:precise ex trusion;prog rammable logic cont oller;unctional module;quality actor ;control system 　　 PLC ,P LC ,, 。 , 4C (Computer、Communication、Control 、CRT ) , IT ,——— ,, P LC , RS232 , 。 、、、、、 (、、) 1　PLC P ID 。 。, 　　(Programm able Logic Cont roller, 。 PLC),、 、 。 ,。 1.1　 1 , :2002-12-24 、, :(302200 8) 、, 　200 3 5 　　　 　　　·75 ·　 ,P LC CPU 。