Rotating stall control for axial flow compressors

2002 ◽  
Author(s):  
C. Belta ◽  
Guoxiang Gu ◽  
A. Sparks ◽  
S. Banda
Keyword(s):  
Axial Flow ◽  
Rotating Stall ◽  
Stall Control ◽  
Axial Flow Compressors

Rotating stall control for axial flow compressors

Automatica ◽  
2001 ◽  
Vol 37 (6) ◽  
pp. 921-931 ◽  
Author(s):  
Calin Belta ◽  
Guoxiang Gu ◽  
Andrew Sparks ◽  
Siva Banda
Keyword(s):  
Axial Flow ◽  
Rotating Stall ◽  
Stall Control ◽  
Axial Flow Compressors

scholarly journals Robustness of Rotating Stall Control for Axial-Flow Compressors*

2003 ◽  
Vol 125 (3) ◽  
pp. 424-428 ◽  
Author(s):  
Ali Tahmasebi ◽  
Xiang Chen
Keyword(s):  
Axial Flow ◽  
Engine Performance ◽  
Rotating Stall ◽  
Stabilizing Controllers ◽  
Stable Operating ◽  
Uncertainty Set ◽  
The Stability ◽  
Stall Control ◽  
Admissible Uncertainty ◽  
Axial Flow Compressors

Feedback control has been pursued to address the rotating stall problem in axial flow compressors in order to extend the stable operating range and to improve engine performance. These controllers guarantee the stability of the bifurcated operating solution near the stall point. In this paper, an analytic approach is developed to characterize the robustness of some stabilizing controllers for rotating stall in axial-flow compressors. The numerical examples show that the size of the admissible uncertainty set changes for stabilizing controllers with different feedback gains. It is also proved that a nonlinear stabilizing control is not necessarily superior to a linear one.

Distributed Control of Rotating Stall in an Axial Flow Compressor With Actuator Constraints

2000 ◽  
Author(s):  
Craig A. Buhr ◽  
Matthew A. Franchek ◽  
Sanford Fleeter
Keyword(s):  
Absolute Stability ◽  
Closed Loop ◽  
Axial Flow ◽  
Gain Control ◽  
Rotating Stall ◽  
Control Law ◽  
Circle Criterion ◽  
Axial Flow Compressor ◽  
Flow Compressor ◽  
Stall Control

Abstract Presented in this paper is an analytical study evaluating the closed loop stability of rotating stall control in an axial flow compressor subject to a nonlinear spatial actuation constraint that limits the amplitude of a spatial mode input. Absolute stability of the rotating stall control system is investigated by applying the circle criterion to a linearized model of an axial compressor in series with the saturation element. This stability analysis is then used to design the gain and phase of the ‘classical’ complex gain feedback control law. Resulting is a systematic method for designing the parameters of the complex gain control law which increases the region of absolute stability guaranteed by the circle criterion for the closed-loop system.

High-gain feedback control of rotating stall in axial flow compressors

Automatica ◽  
2002 ◽  
Vol 38 (6) ◽  
pp. 995-1001 ◽  
Author(s):  
Mahir A. Nayfeh ◽  
Eyad H. Abed
Keyword(s):  
Feedback Control ◽  
Axial Flow ◽  
High Gain ◽  
Rotating Stall ◽  
Axial Flow Compressors

scholarly journals Bifurcation Analysis of Surge and Rotating Stall in Axial Flow Compressors

1993 ◽  
Vol 115 (4) ◽  
pp. 817-824 ◽  
Author(s):  
E. H. Abed ◽  
P. K. Houpt ◽  
W. M. Hosny
Keyword(s):  
Global Bifurcation ◽  
Axial Flow ◽  
Rotating Stall ◽  
Simple Explanation ◽  
System Parameters ◽  
Measured Characteristic ◽  
System Data ◽  
Unstable Oscillation ◽  
Local And Global Bifurcations ◽  
Axial Flow Compressors

The surge and rotating stall post-instability behaviors of axial flow compressors are investigated from a bifurcation-theoretic perspective, using a model and system data presented by Greitzer (1976a). For this model, a sequence of local and global bifurcations of the nonliner system dynamics is uncovered. This includes a global bifurcation of a pair of large-amplitude periodic solutions. Resulting from this bifurcation are a stable oscillation (“surge”) and an unstable oscillation (“anti-surge”). The latter oscillation is found to have a deciding significance regarding the particular post-instability behavior experienced by the compressor. These results are used to reconstruct Greitzer’s (1976b) findings regarding the manner in which post-instability behavior depends on system parameters. Although the model does not directly reflect nonaxisymmetric dynamics, use of a steady-state compressor characteristic approximating the measured characteristic of Greitzer (1976a) is found to result in conclusions that compare well with observation. Thus, the paper gives a convenient and simple explanation of the boundary between surge and rotating stall behaviors, without the use of more intricate models and analyses including nonaxisymmetric flow dynamics.

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