Many practical problems in magnetic bearing control concern essentially the minimization of the compliance of the rotor at a particular point, often not a bearing or sensor location. Experimental results are presented which demonstrate that controller design problems of this type can be tackled via μ-synthesis. The problem of minimizing the peak compliance at the midspan of a rotor test rig is examined. A significant improvement in performance is obtained by a multivariable μ controller over a benchmark optimal decentralized PD controller. Interestingly, the μ controller obtained is unstable. Therefore, the rotor is first levitated with a PD controller and then the multivariable algorithm is implemented. Careful attention is given to developing an accurate system model, especially the transfer function of the magnetic actuators with solid stators.
|Number of pages||5|
|Journal||Proceedings of the American Control Conference|
|State||Published - 1997|
|Event||Proceedings of the 1997 American Control Conference. Part 3 (of 6) - Albuquerque, NM, USA|
Duration: Jun 4 1997 → Jun 6 1997
ASJC Scopus subject areas
- Electrical and Electronic Engineering