Method for regulating the temperature of strip metal
AssigneeSiemens Aktiengesellschaft
InventorsJohannes Reinschke, Klaus Weinzierl
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Abstract
The invention relates to a method for controlling or regulating the temperature of a metal strip in a cooling path of a hot rolling system. A desired temperature gradient is compared to an actual temperature gradient in order to determine adjusting signals for the cooling path. At least one target function is formed for actuators of the cooling strip, taking into account auxiliary conditions, and said target function is solved as a quadratic optimization problem for the purpose of model predictive regulation. The invention also relates to an overlapping regulation for the finishing train and the cooling path of the hot rolling system.
Claims14
A method for controlling a temperature of strip metal within a technical installation of the steel industry, the strip metal transported through the technical installation, the method comprising:
- providing a target temperature gradient of the strip metal;
- route-tracking a plurality of points on the strip metal during the transport of the strip metal through the technical installation;
- determining a number of temperature gradients for at least some of the points during the transport of the strip metal through the technical installation;
- determining a target function for a plurality of actuators assigned to a control system of the technical installation, the control system adapted to control the technical installation, based on the determined temperature gradients, the target temperature gradient, and side conditions including factors influencing a temperature control included in the control system;
- and
- adjusting the actuators using the target function so that the temperature of the strip metal and the plurality of functions are controlled by the control system,
- wherein adjusting the actuators includes minimizing or maximizing the target function using a solving algorithm of an optimization problem.
Dependencies are inferred from the claim text.