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Output Feedback Control of Surge and Rotating Stall in Axial Compressors
Author(s) -
Sheng Hanlin,
Huang Wei,
Zhang Tianhong
Publication year - 2017
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.1384
Subject(s) - control theory (sociology) , stall (fluid mechanics) , throttle , gas compressor , axial compressor , surge , engineering , actuator , nonlinear system , controller (irrigation) , control engineering , computer science , automotive engineering , control (management) , mechanical engineering , physics , quantum mechanics , agronomy , electrical engineering , artificial intelligence , biology , aerospace engineering
Active control has been widely studied to expand the stable operating range of axial flow compressors in aero‐engines.In this paper, a nonlinear active state feedback controller is proposed first based on bifurcation analysis results of MG model.Then by taking pressure ratio as output parameter, a state observer is designed to estimate the compressor's flow coefficient. An output feedback controller is thus established by combining the observer with the state feedback controller.Finally, digital simulation shows that the proposed output feedback controller not only eliminates the hysteresis loop associated with rotating stall and emergence of surge, but also extends the stable operating range of axial flow compressors effectively.Furthermore, being flexible in using pressure transducer and throttle valve as sensor and actuator respectively, which have been equipped in common engines, the proposed controller has good applicability.