Expert fuzzy control of basis weight profile in paper machines

(1) In a paper machine, optimizing control of the basis weight profile base d on a process model does not achieve long term continuous running. We have made manual operation of the machine by expert operators into a control al gorithm by using membership functions in fuzzy theory, and succeeded in imp roving the saw tooth profile that is not able to be improved by optimizing control. (2) We have developed an algorithm that defines membership functions of exp ert fuzzy control using the process interference by slice bolt manipulation . This algorithm makes it possible to apply easily this expert fuzzy contro l to any type of paper machine.