Patent ID: 6752347
Filing Date: 2004-06-22
Classification: B65H,G05B

Abstract:
A method for improving the operating reliability of a reel-up in which a continuous paper web is reeled around a reeling core to form a full reel, the reel-up having a control system that controls the reeling up, and a substantially separate model-based, learning fault diagnostics,the learning fault diagnostics operating in a learning state to learn normal operating modes of the reel-up, including a change sequence of the full reel and an empty reeling core, and to learn dependencies between measuring, control, and actuating variables of the reel-up by monitoring the measuring, the control, and the actuating variables for a first period of time, so forming a model of the operation of the reel-up; the learning fault diagnostics operating in a diagnostic state to detect a malfunction of a component which is critical to operation of the reel-up by monitoring the measuring, the control and the actuating variables and comparing them with the model formed in the learning state, and after the learning fault diagnostics detects a fault in at least one of the control system and the reel-up, shifting the reel-up into a fault tolerance state, the learning fault diagnostics actively affecting the measuring, control and actuating variables to maintain the function of the reel-up, compensating on the basis of the model it has formed.