Medium And Liner Paper Temperature PID Control Of Corrugated Board Machine Based On PLC

Our living standard gets higher, paper packaging industry is developing quickly.The temperature of medium paper and liner paper for the corrugated board is not only the critical for the board quality but also for the energy saving. some old corrugator,the temperature was controlled by operator manually, it is rough. The situation stopped the developing of this field.Regarding to the current situation of corrugated board field and the feature of conventional PID controller. The conventional PID controller with fixed parameters can't get good performance for corrugator with time-varying environment. a fuzzy PID control with strong robustness are studied and practiced in this project.The mathematic model was researched and all parameters were recognized for the temperature control system and the simulation was carried out as well; S7-300 series PLC with MPI field-bus network was adopted to design the hardware of the control system, the programming software STEP7 was adopted to achieve the control process;together with the HMI configured by Winccflexible constituted a distributional control system, it has realized the temperature automatic control.The system has been put into operation; according to the situation of the practical application; the medium and liner paper temperature is stable and uniform, reaches the requirements; The operating is simple and it is easy to operate in industry field by the operator; the system provide lower energy consumption and higher corrugated board quality it has strong practical value.