Abstract
In this paper, an applied software packag for identifying MIMO system is introduce. It is suitable for implementation on microcomputers. The package contains six algorithms of parameter estimation and five methods of determining model structure. A new model structure test method viz. model response comparison method and several transformation algorithms in recusive form from input-output difference equation into other model forms are included in the package. The modelling procedure involves two steps:(1), looking for a middle model with high order which dynamic is approximate to true object; (2), reducing model order to obtain a suitable parameteric model. The package is equipped for a special microcomputer to identify the dynamics. The identification experiments for a 350 MW boiler-turbine-generater (BTG) set by using the special microcomputer have been carried out, and the data are processed off-line by the package. Then the more overall mathematical models of the BTG set are obtained in the form of transfer functions.
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