An active optimal control strategy of rotor vibrations using external forcesAn active control strategy for lateral rotor vibrations using external forces is proposed. An extended state observer is used to reconstruct the full states and the unbalance distribution. An optimal controller which accommodates persistent unbalance excitation is derived with feedback of estimated states and unbalances. Numerical simulations were conducted for two separate four degree of freedom rotor systems. These simulations indicated that the proposed strategy can achieve almost complete vibration cancellation. This was shown to be true even when the number of external control forces was less than the system order so long as coordinate coupling was present. Both steady state and transient response at a constant speed are presented.
Document ID
19900059169
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Zhu, W. (Arizona State Univ. Tempe, AZ, United States)
Castelazo, I. (Arizona State Univ. Tempe, AZ, United States)
Nelson, H. D. (Arizona State University Tempe, United States)