Dynamic data acquisition, reduction, and analysis for the identification of high-speed compressor component post-stability characteristicsA compressor test was conducted in which transient data were obtained for the purpose of identifying the high-speed post-stability characteristics. The transient, surge-cycle nature of high-speed post-stability operation precludes the possibility of obtaining the characteristics in a steady-state manner, as is possible during low-speed poststability operation, which is characterized by quasi-steady rotating-stall behavior. Specialized compressor instrumentation was developed and was used to obtain the necessary surge-cycle performance data, which were then digitized, filtered, and analyzed. The high-speed post-stability characteristics were obtained through the use of a maximum likelihood-parameter estimation technique. The estimated characteristics were found to be insensitive to the presence of measurement noise and unmodelled system dynamics, but the compressor time-response constants, which were also estimated, were more sensitive to these same disturbances.
Document ID
19870058124
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dvorak, S. D. (General Electric Co. Cincinnati, OH, United States)
Hosny, W. M. (General Electric Co. Cincinnati, OH, United States)
Steenken, W. G. (General Electric Co., Aircraft Engine Business Group, Cincinnati OH, United States)
Taylor, J. H. (General Electric Co. Schenectady, NY, United States)