Systems of control and diagnostics in integrated APCS of heavy-plate mills.

Abstract

Diagnosing the equipment of complex technological installations is a guarantee of their safe and efficient performance. The aims of the diagnostic systems creation are the following: timely prevention of possible failures and malfunctions of systems and equipment; the necessity of having a complete and holistic picture of the actual technical condition of the operating systems and equipment; high accuracy forecasting of the residual life of the equipment; minimization of cost and increase of efficiency of works on technical conditions monitoring, maintenance, repairs and management of resource characteristics of systems and equipment; continuous improvement, based on objective performance data, actual characteristics of safety, reliability and operational readiness. To such complex technological installations there belongs the equipment of hot rolling shops, for example, mechanical equipment of the mill, electric drive with control systems, devices and control systems for hydraulics, lubrication and cooling management, ventilation stations, pumping stations; switchgear cells (high voltage switches), complex of APCS of heavy-plate mills rolling technical means. The article considers some methods of operational control of the technical condition of the heavy-plate rolling mills equipment. The factors that influence the efficiency of the diagnostic algorithms used in the APCS, in particular, the organization of collection and processing of statistical data on the possibilities of malfunctions and the costs of their search and elimination are determined in the paper. Formalization of methods for construction and description of mathematical models of the object of diagnostics is performed. Utilization of the subsystem of control and diagnostics in the APCS of modern rolling mills provides a significant improvement in the reliability of the APCS of heavy-plate mills rolling, as well as some economic effects.