Real Time Vibration Control of Rotating Circular Plates by Temperature Control and System Identification

Abstract A system for real-time control of the transverse vibration of a rotating circular plate, based on a thermal stressing technique and dynamic system identification, is presented in this paper. In this method the plate natural frequency spectrum is modified through the purposeful introduction of thermal membrane stresses. The critical speed is maximized. In effect vibration is controlled through real-time control of the plate design. Evaluations with computer simulation and experimental measurements on a thin circular plate verify the system capability to control transverse vibration in a changing thermal environment.