| Popis: |
Synchronous vibration is the most common form of vibration in rotorbearing systems. Open-loop controllers, in conjunction with magnetic bearings, have been shown to be very effective in controlling synchronous vibration in flexible rotor-bearing systems. A well-known open-loop controller, called a mini-least-squares controller, minimises the measured rotor vibration in a least-squares sense. In this paper, it is shown how convex programming can be used to design mini-major-axis controllers, which minimise the largest measured rotor displacement. A numerical example illustrates the potential improvement in performance of mini-major-axis controllers compared to mini-least-squares controllers. |
