The Temperature Control System Research of PVC Latex Batching Based on PLC

The PVC latex batching system has problem of the long time lag and nonlinearity and the precise mathematic mode that is hard to build. Advanced control strategies show strong advantages for resolving these problems, thus the combination of the advanced control strategies with the popular PLC has been the hot area in controlling-industry. In this paper, it proposed to apply the fuzzy control to the Batching system and has completed the design of the fuzzy controller. Based on the characteristics of the PLC, the realization of fuzzy control on PLC and the design method of the fuzzy controller in Siemens S7-300 PLC have been put forward.