슬리이딩 모드 제어기(Sliding Mode Controller); 장력 제어(Tension Control); 얇은 필름(Thin Film); 풀림롤(Unwinder); 감김롤(Winder)
Issue Date
2000-10
Publisher
한국생산제조학회
Citation
한국공작기계학회지, v. 9, no. 6, page. 65-72
Abstract
This paper presents the study of the tension control in a web transfer system. In this study the sliding mode controller is applied to a time-varying nonlinear mathematical model. The model was derived to consider the effects of changing the roll radius in tension variation during winding and unwinding. The uncertainty in modeling may be due to unmodelled dynamics, on variations in system model. Designed sliding mode controller made the system error always staying in the suggested surface from the beginning. Through this, system is maintained to be robust against a disturbance and uncertainty. To verify the designed controller has a good performance, various inputs such as desired velocity, step input, and trapezoidal input are applied. When the sliding mode controller was used, the system(the tension control) performance was improved comparing to the PID controller. The robustness of the controller with respect to an estimation error was verified through simulations.