Comparative study of different methods of vibration control of rotor bearing systems

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Saudi Digital Library

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The performance of three different feedback control systems has been studied in controlling the vibration of a rotor-bearing system. Two Different mathematical models of the rotor-bearing system have been presented. One model is developed by considering the rotor-bearing system on rigid supports and another model is developed by considering the system on flexible supports. The control techniques applied on these models are: the State variable feedback, Integral plus state variable feedback and Linear quadratic servo. The response of the deflection of the rotor has been simulated on a digital computer. The results of the simulation are presented. These control techniques have been compared on the basis of time-response specifications. The relative suitability of controllers is discussed. The effect of the flexibility of the supports, on the response of the rotor-deflection has been studied. The results obtained for different support stiffnesses are discussed.

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