Research And Design Of The Control System For The Slope Flame Cutting Maching Based On PLC

This subject is for sloving the problem of infuencing production rhythmic,because projecting isn't in reason. Flame cutting machine that subject select for use this mechanical part mainly and metallurgical equipment that factory jointly develop Shanghai, on the basis of introducing the products , combine the technological requirement of the medium-sized factory of Laigang, design to a new generation because of the technology of the computer, the integrated products of electromechanics incorporating PLC and automatically controlled principle into an organic whole. This text has introduce the function of the control system of this set of equipment, has designed and debugged the whole control system.This main characteristic in the control system is economiziong the time of steel billet divided, raising H section steel production line can produce; Use programmable controller (PLC ) control module , is it transfer the new-type slope type flame cutting machine control system of the speed to go on with frequency converter to electrical machinery at the same time.In this thesis,we apply space Vector Contronl scheme for improve dynamic response. We study the scheme widely and using PLC in practice.Because the Vector Controls not only controls the size of the amplitude of the electric currenting, but also considered it is confirmed that the direction embodies in iT, iM allocation proportion, this is different in past adjusting the speed method. The scalar quantity must be mediated and reached and run steadily through longer time when being controlled, main characteristic that vector control to it's fast , Exchanging electrical machinery have improvement in essence in adjusting speed performance to make to respond dynamically. Achieve and improve the reaction speed, accelerate the purpose to produce rhythm.In this thesis ,the selectted PLC is SIEMENS S7-300.The PLC is the center contron unit of the incise machtion with flame,all the order from the operater is sent away to control system .By the way,it supply all kinds of working parameters,working state.fault information,and some answer.All of them is sent to level 2 computer by the PLC.Then,it builts good interface between operaters and control system.