Development Of Intelligent Control System For Filling Production Line

Filling is the most basic process of industrial production,as the last link of industrial production,it is widely used.Filling production line is the basic equipment to realize canning operations,with the continuous improvement of canning efficiency and flexible canning requirements in different industries such as food,medicine,daily chemicals,etc.,filling production line technology is increasingly showing intelligent characteristics.The research content of the project comes from the actual production,that is,according to the requirements of a gas filling company for filling production,jointly develop an efficient intelligent filling production line,the enterprise is responsible for the development of mechanical systems such as the line body of the production line and the single machine of each station,and this project is responsible for the development of the entire line control system.The research work mainly includes the following:1.According to the specific situation of the production line,put forward the overall technical scheme of the control system.The integration scheme of industrial computer + PLC + field sensing and communication system was proposed,and the hardware system design was completed,including the configuration and selection of the upper industrial control computer,the design,selection and I/O distribution of PLC and field signal,communication system.The control system studied in this project contains multiple stations,of which 20 filling scales are designed to work together to meet the production requirements of 220 bottles per hour for large bottles and 250 bottles per hour for small bottles,and if any filling scale fails in the production process,it cannot affect the operation of the entire line;2.Developed production line control system software.The industrial computer mainly completes human-computer interaction and data management,production reports,fault logs,etc.,and is responsible for the overall control of the entire filling production line.The lower computer selects Siemens’ S7-1500 series control unit,which is responsible for receiving the control instructions of the upper computer and performing the on-site control at the equipment level,and at the same time sending the information collected by the data acquisition module to the upper computer for decision-making processing.The PROFINET communication protocol is used between the upper and lower computer computers,and the operator can realize the operation control and status monitoring of the filling production line through the touch screen man-machine interface;3.Complete the debugging of the software and hardware of the control system.After nearly half a year of on-site commissioning,the software and hardware of the control system have realized the expected control functions,and the production line has run stably and reliably,reaching the expected capacity requirements;4.A conveyor belt speed optimization control algorithm based on adaptive fuzzy PID control is proposed.In view of the fact that the conveyor belt of the manufacturer’s existing filling production line does not have a speed regulation function,which often leads to overload or underload operation,the optimization measures of the speed control of the feeding conveyor belt by the control algorithm are innovatively proposed.Through simulation and experiments,the algorithm has strong accuracy and stability in speed control,which can ensure that when any of the20 canning scales fails,it will not affect the operation of the entire production line.