In this paper a digital numerical simulation is carried out in which active magnetic bearings (AMB) are applied to control nonlinear and nonsynchronous vibrations of a rigid rotor excited by nonconservative 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 for 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 nonadaptive feedback controllers, designed with pole placement or least square algorithms.
Adaptive Vibration Control of a Rigid Rotor Supported by Active Magnetic Bearings
- Views Icon Views
- Share Icon Share
- Search Site
Lang, O., Wassermann, J., and Springer, H. (October 1, 1996). "Adaptive Vibration Control of a Rigid Rotor Supported by Active Magnetic Bearings." ASME. J. Eng. Gas Turbines Power. October 1996; 118(4): 825–829. https://doi.org/10.1115/1.2817001
Download citation file: