... responses such that a low amplitude contact-free orbit is the only possible steady-state response. The gain synthesis method leads to controllers that are physically realizable and can eliminate amplitude jump over a range of running speeds. Region for stable low-amplitude whirl under force-feedback...

... function in the case of total force feedback, in contrast to acceleration feedback, is investigated. The open-loop system characteristics are analyzed based on open-loop transfer function expressions obtained using modal expansion and on modal model order reduction techniques. To closely demonstrate...

... as propagating waves travelling in the structure. It was found that the two descriptions often give enlightening complementary perspectives 2 3 . acoustic wave transmission acoustic wave reflection vibrations vibration control force feedback acoustic noise 01 July 2001 01 April 2002...