Dynamic of a Rewinder with Feedback by Tension Force

Abstract

Processes of rewinding the tight bands of various elastic materials are very often in various technological lines. The highest process control quality is achieved only by employing feedback signal of tension force of the tight band. Therefore in this article there is proposed structure of control system and strategies for control with direct measurement of tension force in a rewinder system. The proposed control strategy allows stabilizing the tension force neglecting the change of diameters of the unwinding and rewinding rolls. The tension force of the tight band is controlled by using the electromagnetic friction clutch while the linear speed of coiling is adjusted by frequency drive. For the proposed system the performance evaluation and adjustment the equations of nonlinear control system with three closed loops are developed and modeled by using “MATLAB/SIMULINK” program package. The results of the mathematical modeling have shown good coincidence with the real experimental results. Therefore the mathematical model might be used for determining optimal PID control parameters of real tide band coiling system. Ill. 6, bibl. 11 (in English, summaries in English, Russian and Lithuanian).