Disclosed are a fuzzy control system and a fuzzy control method for displacement in a width direction for producing a roll-to-roll printing type electronic device capable of eliminating a widthwise position disturbance by controlling widthwise position disturbance of a web using fuzzy control logic. Fuzzy control method of the present invention is a continuous process roll-to-roll printing method for electronic device manufacturing, the width direction position error (Error) and the sum (sum_Error), the error occurring upstream using the fuzzy width position controller Calculate the ratio (rate_Error), calculate the value according to the prescribed rule to move the roll of the downstream guider system, has the effect of eliminating the positional disturbance in the width direction generated upstream, and improves the printing accuracy to improve the electronic device By implementing a roll-to-roll electronic device printing system suitable for printing, there is an effect that it is possible to implement a register control of a more precise printing system that can improve the overshoot problem compared to the conventional PID control method.;Fuzzy control logic, roll-to-roll printing method, width position error, disturbance
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