ESTIMATING INITIAL STATES OF A SYSTEM MODEL FOR CO

专利名称：ESTIMATING INITIAL STATES OF A SYSTEM

MODEL FOR CONTROLLING AN INDUSTRIALPROCESS

发明人：GALLESTEY ALVAREZ, Eduardo,POLAND,

Jan,STADLER, Konrad,GAULOCHER,Sebastian,FOROUSH, Hamed Shisheh

申请号：EP10723996.4申请日：20100525公开号：EP2446329A1公开日：20120502

摘要：According to the present invention, model-based control of industrialprocesses is promoted by using a merged MLD system model for both the estimationand subsequent control of the industrial process, thus simplifying and expediting the set-up of model based control together with accurate estimation of initial states. Inparticular, an optimization of an objective function is performed, wherein the objectivefunction includes a difference between an observed quantity and an output variable of aMixed Logical Dynamic (MLD) system model of the industrial process. The optimization isperformed as a function of state variables of the MLD system model, over a number oftime steps in the past, and subject to constraints defined by the MLD system model'sdynamics. The optimizing values of the state variables are retained as estimated initialstates for the subsequent control of the industrial process in a model-based mannerincluding the very same MLD system model. The single MLD system model is acombination or merger of individual MLD subsystem models representing the sub-

processes of the industrial process, and may thus be elaborated by a commissioningengineer during a customization step on a plant site, and hence at a comparably latemoment during plant execution.

申请人：ABB Research Ltd.

地址：Affolternstrasse 44 8050 Zürich CH

国籍：CH

代理机构：ABB Patent Attorneys

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