Abstract

A systematic identification procedure is described for multivariable local linear state-space models. Normalized radial basis functions are used as weighting functions and the system matrices of the local models are fully parameterized. An iterative projected gradient search method is used to deal with the nonuniqueness of the fully parameterized model. Scheduling the local models with the input or with the output is discussed. The choice of scheduling variable influences the stability of training the recurrent state-space model. The procedure is illustrated using data from the Silver-box case study.

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