6533b86dfe1ef96bd12c9b18

RESEARCH PRODUCT

ROBUST CONTROL FOR A SUSPENDED ROTATING SHAFT BY RADIAL ACTIVE MAGNETIC BEARINGS

Gabriele BarbaraciGabriele Virzi' Mariotti

subject

Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineRigid rotor active magnetic bearing robust control

description

This paper shows a comparison based on dynamic behaviour of a rotating shaft when it is suspended by 4-axis active magnetic bearings under several control systems. The control systems used are μ-synthesis, loop shaping design procedure and Sub(H∞) robust control with the introduction of uncertainties on position and current gains of the actuators. Each of these controllers is characterized by four input signals and four output signals and the introduction of uncertainties on displacement gain and current gain is due to torn and worn of the components during the time, which can lead the entire system to instability phenomena. The comparison of the performances is obtained through the introduction of same weighting function for all three control systems. All simulations and results are performed by MATLab.

yearjournalcountryeditionlanguage
2011-01-01
http://hdl.handle.net/10447/56516