Control Strategy Design Of The Automatic Bagging Machine Based On Finite State Machine

With the continuous improvement of China’s traditional manufacturing labor costs,profits shrinking,more and more paper production enterprises urgently need to adopt automatic bag bagging machine to replace manual production.Due to the soft bag,incision easy to take off a silk,therefore,woven bag bagging technology is complex,and to make coordination with woven sack motor requirement is extremely high,so, this thesis research reference finite state machine theory to improve packaging machinery commonly used PLC control technology,to solve the automatic bag for the problem of bagging machine PLC intelligent control, has important value for engineering application.In this article,the main contents are:(1)In view of the control technology gap of domestic packaging machinery and packaging machinery abroad,research a state machine model to deal with complex packaging machinery control theory.That is,to the operation of the automatic packing machine,suspend,and reset all sorts of control state as a lower state of the finite state machine to realize intelligent control,at the same time,various operating state(bag,sack,etc.) of the running time as lower state to realize intelligent control.(2)creatively imitating the process of finite state machine establishing regular expression,confirmed the feasibility of the application of the finite state machine principle in PLC control program from the mathematical principles,and convert the three basic structure of PLC control program to new state transition model with mathematical relationship,make it adapt to the state machine process of state transition model,realize the intelligent control based on state.(3)According to the function of the automatic bagging machine,design the corresponding electric control system and touch screen interface.According to the PLC new state transition model based on state machine and the function of automatic bagging machine,this article proposes a heuristic master control program model,develop the control program and each function module of fully automatic bagging machine,realize the completing control of all bagging process.(4)Automatic bagging machine can complete all function during the test,and voluntarily detect according to various fault pause and alarm automatically,resume normal operation after manual intervention,and then complete production task,certify the progressiveness of the automatic bagging machine based on state machine.This PLC intelligent control technology based on the finite state machine can not only be used for automatic bagging machine,can also be used for intelligent control of other packaging machinery.