Robust Control of Continuous Casting Process for Various Technological Conditions

Abstract

The process of continuous steel casting, specifically the part of secondary cooling, is a typical representative of a system with distributed parameters. The paper deal with the synthesis and simulation of robust control of continuous steel casting in the secondary cooling zone. During steel production, there is a smooth change between the types of steel produced (or steel grades), to which the control system must react flexibly. Therefore, a robust approach based on simple PID controllers will be chosen for control synthesis. Based on the model obtained from the ProCast software, the uncertainty limits for the simulation model will be determined. Robust control simulations will be performed on a time-space circuit, within the simulations a possible machine failure will be tested, thus a change in cooling power in individual zones. The results will be presented as temperature fields, representing the system with distributed parameters, taking into account the time and space distribution of the controlled temerature.