Dynamic Model of Pressure Screens for Fault Detection, 1995 Process Control, Electrical & Information Conference Proceedings
Leoncio W. Estevez-Reyes and Guy A. Dumont - University of British Columbia
The classical control scheme for pulp pressure screens regards the screen as a static system. Out of several faults that could occur during screen operation, it only addresses the possibility of plate plugging. Among other drawbacks, this method restricts the screen throughput. After testing diflerent parametric and non-parametric methods for fault detection on screens, it was found that a mathematical model developed at the Pulp and Paper Centre in The University of British Columbia has potential for its use as a diagnosis tool. By monitoring some of the process parameters of the screen included in this dynamic model, incipient malfunctions of the screen could be detected and failure could be prevented. The pressure screen model is part of a general strategy for diagnosing and controlling unsssute screens.
Dynamic Model of Pressure Screens for Fault Detection, 1995 Process Control, Electrical & Informatio