Author： Liu Xingqiao Geng Jiao Teng Shaoqing Li Chengchun
Publisher： Inderscience Publishers
ISSN： 1746-6172
Source： International Journal of Modelling, Identification and Control, Vol.7, Iss.4, 2009-08, pp. : 371-375
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Abstract
A fuzzy-PID controller with adjustable factor is designed in this paper. Scale factor's self-adjust will come true. Fuzzy control algorithm is finished in Step7 software and then downloaded in S7-300 PLC. WinCC software will be used to control the change-trend in real time. Data communication between S7-300 PLC and WinCC is achieved by MPI. The research shows that this fuzzy-PID controller has better robust capability and stability. It's an effective method in controlling complex long time-varying delay systems.
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