Control-oriented modelling and control of rotor vibration

• Autorzy: Gosiewski Z.
• Języki publikacji: EN

Abstrakty

EN

Deep analysis of the control plant brings many useful information for the designer of the control system. The analysis is also important part in the design of active vibration control system. The coupling of different dynamical phenomena in rotating machinery leads to unstable vibrations. Usually, the coupling effects are caused by changing parameters. Angular speed or rotor unbalance in some applications are such parameters which change in the wide range. The problem is to find for which angular speeds we have unstable torsional/lateral vibrations. Usually, the unstable regions are in the vicinity of angular speeds where maps of natural frequencies for both dynamical systems cross each other. In the paper there was explained which intersection of torsional and lateral natural frequencies are unstable and why. The root locus method was used to explain the phenomenon. It indicated such control procedures which amplify the positive (stabilizing) mechanisms in the rotor dynamics. Such procedures can also lead to the energy saving control laws. In the case of lateral vibrations there were considered four control strategies. And these strategies were compared to indicate optimal one.

Słowa kluczowe

EN

rotor vibration; vibration damping

PL

drgania wirnika; tłumienie drgań

• Wydawca: Oficyna Wydawnicza Politechniki Białostockiej
• Czasopismo: Acta Mechanica et Automatica
• Rocznik: 2008
• Tom: Vol. 2, no. 2
• Strony: 21--38
• Opis fizyczny: Bibliogr. 8 poz., rys., wykr.

Twórcy

autor

Gosiewski Z.

• Białystok Technical University, Faculty of Mechanical Engineering, ul. Wiejska 45 C, 15-351 Białystok,

Bibliografia

• 1. Ejkchoff P. (1980), Identyfikacja w układach dynamicznych, PWN, Warszawa.
• 2. Gosiewski Z. (2008), Analysis of coupling mechanism in lateral/torsional rotor vibrations, Journal of Theoretical and Applied Mechanics, No. 4, Warsaw.
• 3. Gosiewski Z., Muszyńska A. (1992), Dynamika maszyn wirnikowych (Dynamics of rotating machinery), Publishing Office of WSInż. Koszalin.
• 4. Juang J.-N. (1994), Applied System Identification. Prentice- Hall Inc., (UK).
• 5. Kaczorek T. (1993), Teoria sterowania i systemów (Theory of control and systems), Wydawnictwo Naukowe PWN.
• 6. Muszynska A., Goldman P., Bently D.E. (1992), Torsional/lateral vibration cross-coupled responses due to shaft anisotropy: a new tool in shaft crack detection, Conference of Institution of Mechanical Engineers, Bath, Great Britain.
• 7. Preumont A. (2002), Vibration Control of Active Structures: An Introduction, Kluwer Academic Publishers, Dordrecht.
• 8. Ulbrich H., Gunthner W. (Editors) (2005), Proc. IUTAM Symposium on Vibration Control of Nonlinear Mechanisms and Structures. Munich, Germany. Springer, Dordrecht, the Netherlands.