• 한국산학기술학회논문지
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• 제10권1호
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• pp.1-5
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• 2009

본 논문에서는 Flexible Flat Cable을 생산하는 기계에서 작업시 텐션양을 조절하는 콘트롤러에 대해 하중과 모멘트를 변화시켜 적용하고 또한 텐션 콘트롤러 각각의 하중이 프레임에 집중할 때 처짐량을 알기 위하여 ANSYS로 구조해석을 수행하였다. 해석 결과로는 응력, 변형률과 최대변형량을 구하여 구조적 타당성을 검토하고 이를 설계에 반영한다.

• 한국정밀공학회지
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• 제26권6호
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• pp.81-89
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• 2009

Dancer systems are typical equipment for attenuation of tension disturbances. Lately, demands for high speed roll-to-roll machines are rising but it is prior to attenuate the tension variation on the web entering into the printing zone to achieve the speed increment. Maintaining a constant tension before the first printing cylinder is the key of high speed, high quality printing. Dancer has been researched in two ways, whether it is controlled or not. The first one is active dancer and the other one is passive dancer. In the active dancer, a position of idle roll of dancer is measured and the roll is moved by external hydraulic cylinder to control tension disturbances. While the passive one composed with spring, damper and idle roll has no external actuator to position the idle roll. The tension disturbance causes movement of dancer roll and the displacement of the roll regulates the tension variation. On the other hand a composite type of dancer is applied for roll-to-roll printing machines. It has same apparatus as passive dancer. The displacement of roll is measured and front(or rear) driven roller is controlled to position the roll. In this paper, it is presented an analysis of pendulum dancer including position feedback PI control and logic for PI gain tuning in roll-to-roll machines. Pole-zero map and root locus with varying system parameters gives a design method for control of the dancer.