Identification of Active Magnetic Bearing Systems Utilizing a Modulating Function Technique

Gavrilenko, Olga; Reger, Johann GND; Roeser, Dennis; Sattel, Thomas GND

An application of modulating function (MF) technique to the direct closed-loop identification for the estimation of a continuous-time model of multi-input-multi-output magnetic bearing system from sampled data are presented in this paper. The plant description given as a differential matrix polynomial is transformed into a matrix of difference equations using the modulating function approach, which allows to avoid numerical problems by aproximating time derivatives. Additionally, the initial conditions can be neglected as a characteristic of the MF technique. The system parameter estimation represents a solution of a least-squares problem derived from the difference system model with experimental data from an industrial magentic bearing system.

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Gavrilenko, Olga / Reger, Johann / Roeser, Dennis / et al: Identification of Active Magnetic Bearing Systems Utilizing a Modulating Function Technique. Ilmenau 2017. ilmedia.

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