METHOD FOR IMPROVING THE OPERATING RELIABILITY OF A REEL-UP

摘要

The invention relates to a method for improving the operating reliability in reeling up of a paper web, in which a continuous paper web which is passed from a paper machine and/or finishing treatment of paper and whose width corresponds to the production width or which is slit into part webs is reeled around a reeling core/reeling cores into successive machine reels or customer rolls. According to the invention, the actual control system controlling the reeling up process is supplemented with a substantially separate, model-based learning fault diagnostics. In a learning state the fault diagnostics learns in the normal operating modes of the reel-up the normal dependencies of the measuring, control and actuating variables of the reel-up by monitoring the same. In a diagnostic state the fault diagnostics detects the malfunctions in components critical in view of the operation of the reel-up by monitoring the measuring, control and actuating variables and comparing them with the model formed in the learning state. After the fault diagnostics has detected a fault, said fault diagnostics shifts into a fault tolerance state, if necessary, in which, if a fault occurs in a component/some components of the reel-up, the fault diagnostics actively affects the measuring, control and actuating variables to maintain the function of the reel-up, compensating on the basis of the learned model the malfunction caused by the fault/faults in the actual control system as well as in the function of the reel-up.