Research On Automatic Doff And Transport Control System Software

On the background of the country to promote intelligent manufacturing,green manufacturing and optimize the industrial structure,the development model of traditional textile industry with high energy consumption and high input in labor has been difficult to sustain.Especially for chemical fiber enterprises,workers need to fall and transport a large number of silk cakes every day.In order to achieve the goal of machine substitutions and reducing costs,some enterprises urgently need automatic equipments which can achieve the automatic drop and transfer of silk cakes,to replace the manual operation.In this paper,according to the needs of related enterprises,on the basis of the completion of the mechanical structure and part of the hardware design,the design of automatic doff and transport control system is improved.First of all,according to the latest process requirements,the overall design of the control system is completed.The system uses distributed management control structure.The upper computer is regarded as the workshop director responsible for task scheduling and state monitoring,and the lower computer is responsible for the implementation of specific tasks and feedback of the implementation of the situation.Besides the hardware design and wiring of new temporary storage area and automatic creel are completed.Then the software design of control system is studied.Through analysis of the software function requirements,the upper and lower computer software system are divided into several modules,according to the modular programming ideas.In addition,the software overall control process is determined,and the function modules are designed in detail.For the host computer using Lab VIEW programming,Lab VIEW and PLC data interaction is achieved by establishing OPC communication tags.Full volume signal is obtained through serial communication module.The complex task scheduling and serial data processing are achieved through the formula node.The problem of serial data receiving and processing speed synchronization is solved by using typical producer consumer model.The information management of the whole process of yarn cake transportation is realized by introducing the database as the information manager,task dispatcher,and the storage with a large amount of intermediate data.The design of man-machine interface is completed,which can realize real-time online monitoring.For the lower computer using PLC programming,according to the robot process,using modular programming ideas,the task program is subdivided into basic task program and work task program,and each task program is encapsulated into FC function block.Process action is achieved by by continuously scanning the main program,and then calling different subroutines according to the task number sent by the host computer.After field testing,the system can realize the production process requirements reliably.Finally,the problem of full volume task scheduling with time windows is studied,and the corresponding mathematical model is established,and the genetic algorithm is used to solve the problem.The experimental results show that the algorithm is feasible and effective in different situations.And the algorithm can maximize the capacity of the falling robot and guide the manual operation of the blanket to avoid the blindness of artificial fall.