WANG Jian-hua，GU Guang-hui

（School of Electromechanical Engineering，Xuzhou College of Industrial Technology，Xuzhou 221140，China）

Abstract：Aiming at load distribution in paper machine drive control system，load distribution causes，influence and mathematical algorithm for paper machine were studied，load distribution control scheme based on PLC network communication was put forward，and by using Matlab/Simulink toolbox，load distribution control scheme was simulated. Finally，by using Matlab software，GUI interface“Trace. FIG”was developed. The collected signal was filter processed by“Trace. FIG”，and was displayed on the graphics coordinate data waveform. The results indicate that，this control scheme can real-time monitor the paper machine drive current，and adjust the frequency through the ModBus communication，load distribution can be realized. This control scheme sunning stable and reliable since the working.

Key words：paper machine；load distribution；PLC；Matlab/Simulink；Modbus communication