Control device, control model adjusting device and control model adjusting method

Abstract

The invention provides a control device, a control model adjusting device and control model adjusting method, which can not cause reduction of control precision due to divergence of characteristics of a control model and a control object, when the control model for simulating input output relation of the control object is used for control. The control device is provided with a model adjustment starting mechanism which measures a timing of stable actual control quantity, extracts actual data from the control object to generate an execution permission timing for model adjustment; a first control quantity calculating mechanism which uses a present control model to calculate a predictive control quantity at the timing started by the model adjustment starting mechanism; a second control quantity calculating mechanism which calculates a predictive control quantity in the same operation by using values predefined according to parameter changes of an adjusting object of the control model; a control model correction calculating mechanism which extracts the predictive control quantity calculated by the first control quantity calculating mechanism and the predictive control quantity calculated by the second control quantity calculating mechanism, and actual control quantity and the like, so as to obtain a correction of parameters of the adjusting object of the control model.

Description

technical field [0001] The present invention relates to a control model adjustment device, a control model adjustment method, and a control device including them, which improve the matching degree between a control model and an actual control object by changing parameters of the control model. [0002] In particular, the suitable control model is a complex model such as the plate temperature estimation model used in the hot rolling coil temperature control or the soot concentration estimation model in the tunnel ventilation control, and it cannot be calculated algebraically. A control model adjustment device and an adjustment method in the case of a change amount of a model parameter corresponding to a deviation between a control model and an actual control object. Background technique [0003] As a conventional method for adjusting the control model, for example, Patent Document 1 discloses a method that includes a learning mechanism that uses the actually measured output s...

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Problems solved by technology

However, it is difficult to set the difference between the coiling temperature of the steel plate predicted by the control model and the actual measured coiling temperature, depending on the steel type, thickness, rolling speed, target coiling temperature, There is a problem that excessive and continuous labor is required for table construction and value adjustment due to the parameter change amount and temperature correction amount corresponding to the combination of the output side temperature of the machine (hereinafter, control conditions).

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