Uncertainty Modeling in Robust Control of Active Magnetic Suspension

Arkadiusz Mystkowski; Zdzisław Gosiewski

doi:10.4028/www.scientific.net/SSP.144.22

Paper Titles

Preface

Multi-Fingered Haptic Interface Robot and its Application Systems
p.1

Rotor Crack Detection Using Active Magnetic Bearings
p.9

Analysis of Robustness of Vibration Control System for a Magnetically Supported Shaft
p.16

Uncertainty Modeling in Robust Control of Active Magnetic Suspension
p.22

Fluoride Release from Composite Materials for Dental Fillings
p.27

The Influence of Selected Powder Fillers on the Tribological Properties of Composite Materials for Dental Fillings
p.33

Analytic Description of Impulse Response Signals
p.39

The Method of Complex Worthiness Assessment of an Engineering Object in the Process of its Use and Service
p.45

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Uncertainty Modeling in Robust Control of Active Magnetic Suspension

Abstract:

Stabilization of a plant in case of uncertainty parameters and unmodeled dynamics are the main problems considered in this paper. A robust control of motion of a rigid shaft that is supported by magnetic bearings was used as an example. The dynamics of the active magnetic suspension system is characterized by instability and uncertainty. The uncertainty is modeled as an additive and multiplicative. Robust controller H∞ was designed for the defined plant with the uncertainty models. The robust controller assures high quality of control despite the uncertainty models. Robust control of vibrations of a rigid rotor is confirmed by experimental studies. A digital signal processor is used to execute the control algorithm in real time.