In this paper a digital numerical simulation is carried out in which active magnetic bearings (AMB) are applied to control nonlinear and non-synchronous vibrations of a rigid rotor excited by non-conservative cross-coupling mechanisms. Through an adaptive control algorithm of the AMB-controller, unknown cross-coupling parameters of a rotor are estimated on-line by a standard least square estimator along with a time-varying so-called forgetting factor. The parameters of the AMB controller are adapted in order to compensate the cross-coupling effects and to stabilize the rotor system. Transient cross coupling response characteristics are calculated by numerical simulation of a rigid rotor supported by two active magnetic bearings. With this kind of control strategy the stability of the system can be guaranteed for much higher values of cross-coupling coefficients than with common non-adaptive feedback controllers, designed with pole placement or least square algorithms.
- International Gas Turbine Institute
Adaptive Vibration Control of a Rigid Rotor Supported by Active Magnetic Bearings
- Views Icon Views
- Share Icon Share
- Search Site
Lang, O, Wassermann, J, & Springer, H. "Adaptive Vibration Control of a Rigid Rotor Supported by Active Magnetic Bearings." Proceedings of the ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition. Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award. Houston, Texas, USA. June 5–8, 1995. V005T14A011. ASME. https://doi.org/10.1115/95-GT-181
Download citation file: