A Possibility of Vibration Surveillance of Linear Unsteady Systems at Energy Performance Index

• Autorzy: Kaliński K. J.
• Języki publikacji: EN

Abstrakty

EN

The paper is devoted to Vibration surveillance of unsteady systems, which are idealised by the finite element method. In order to reduce a level of Vibration, external control command is introduced. It is a special case of the active Vibration control and the dynamics of controlled system with changing in time coefficients is described. Here is defined an algebraic performance index, whose values change with time. It comprises influence of kinetic and potential energies of Vibration, and also control energy. Optimal control command is generated on-line, with presumed sample ratio. Thus, the formulation is better than ones based on an integral performance index. The other advantage is that the approach proposed does not require an examination of controllability and observability of the system. Consideration concerns either whole vibrating system, or one being reduced. As illustrative example of the approach, time-domain vibration surveillance of railway weighing device is elaborated.

Słowa kluczowe

EN

discrete modelling; vibration; control; simulation; weighing devices

• Wydawca: Wydawnictwa AGH
• Czasopismo: Mechanika / Akademia Górniczo-Hutnicza im. St. Staszica
• Rocznik: 2003
• Tom: T. 22, z. 3
• Strony: 299--306
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Kaliński K. J.

• Section of Dynamics of Mechanical Systems, Cracow University of Technology

Bibliografia

• [1] Kaliński K.: Nadzorowanie drgań układów mechanicznych modelowanych dyskretnie. Gdańsk, Wyd. Pol. Gdańskiej 2001
• [2] Kraszewski J., Pawiak S., Wittbrodt E.: Metoda sztywnych elementów skończonych w dynamice konstrukcji. Warszawa, WNT 1999
• [3] Mazurek S., Weiss M., Wrona A.: Elektroniczne układy pomiaru i przetwarzania sygnałów w dynamicznej wadze kołejowej. Pojazdy Szynowe, 1,1999,49-54
• [4] Wittbrodt E., Kaliński K.: Transient vibration of unsteady linear closed loop systems. Engineering Transactions, 47,3-4,1999, 247-268
• [5] Zboiński K.: The importance of imaginary forces and kinematic-type non-linearities for the description of railway vehicle dynamics. Proc. Instn. Mech. Engrs, 213, Part F, 1999,199-210