Application of fuzzy technology in the PLC control

HU Xiaoping, ZHU Peng, JI Huawei
(College of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China)

Abstract: Aiming at the objects which often have severe delays, are nonlinear and difficult to establish accurate mathematical models in control system, the fuzzy control technology was introduced and applied into traditional automanual devices.The fuzzy control is robust, and it can greatly reduce the effect of outside interference and beating parameters. From an engineering view, the conventional input/output modules of Siemens PLC were used to make up the fuzzy controllers core，a corresponding feasible fuzzy control algorithm was presented and the online methods of linear inquery and modular programming were used. The results indicate that error is small and the response is fast in honing control system model, which is used this control method.
Key words: fuzzy control; programmable logic controller(PLC); online linear inquery