Electromechanical simulation and testing of actively controlled rotordynamic systems with piezoelectric actuatorsTheoretical developments for the simulation of an actively controlled rotorbearing system with piezoelectric type actuators are summarized. Two simulation models were derived; the first assumes that the actuators and other electrical components in the feedback system operate at all frequencies without phase lag or rolloff, while the second model includes the nonideal behavior of these components which are modeled with linear electric circuits. The two models predict identical unbalance response at low frequencies, and the nonideal model also predicts instability-onset feedback gains. The agreement between the measured and predicted results for unbalance response and instability onset gain is very good. The predicted instability-onset feedback gain for active damping was found to be very sensitive to the tare (uncontrolled) damping in the unstable mode.
Document ID
19920056634
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lin, Reng R. (NASA Lewis Research Center Cleveland, OH, United States)
Palazzolo, A. B. (Texas A & M University College Station, United States)
Kascak, A. F. (U.S. Army; NASA, Lewis Research Center Cleveland, OH, United States)
Montague, G. T. (Sverdrup Technology, Inc.; NASA, Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Mechanical Engineering
Meeting Information
Meeting: Joint U.S./Japan Conference on Adaptive Structures