Nazarova O. Synthesis and researching of electric drive control system of cold rolling mills using interconnected models complex

The object of study - electro-mechanical processes are interconnected electric cold rolling mill. The aim is to optimize the electromechanical control systems of rolling mill equipment with the use of a complex of interrelated elements rolling production models that will improve the quality of cold-rolled and cut the number of accidents caused by the cliff bands during rolling. The methods of the theory of electric and automatic control, numerical methods and computer simulation methods for optimal control theory. Theoretical results - the method of investigation multimass interconnected electric cold rolling mills when the moment of inertia, the static moment of resistance and the thickness of rolled metal by the use of complex mathematical models developed by the rolling elements of production. Further developed the theory interrelated drives with elastic ties. Improved mathematical model of the processes associated with the variable thickness of the strip and its precipice, by supplementing the model to simulate the functional dependencies of the electromechanical equipment in the emergency mode. It is proved that the inclusion of variable thickness of the metal strip and the roll radius in mathematical models for solving the problem of analytical design of controllers allows to obtain algorithms for optimal control of electric winder, weights which are functions of variables that provides the necessary quality control processes tension band and low sensitivity to the synthetic system given the destabilizing factors. The practical results - developed a complex multi-diagnosing cold rolling mills, developed a complex computer models rolling elements of production, which takes into account the interconnectedness of control channels, the elastic connection of the first and second kinds, as well as variable thickness of the rolled strip and the possibility of an emergency at breakage of the strip. Synthesized optimal control of the speed of the cage and the tension of the rolled strip, which provides increased manageability and reduction of oscillation with a zero static error. The degree of implementation - the results of the implemented at JSC "Zaporizhstal" (Zaporozhye), and the company, "National Institute for the design of industrial enterprises" GIPROPROM "(Zaporozhye). Scope (area) of - iron and steel industry.