DocumentCode
531996
Title
Notice of Retraction
Modified Linear Parameter Varying modeling for turbofan engine
Author
Li Shu-qing ; Zhang Sheng-Xiu
Author_Institution
Xi´an Res. Inst. of High-Tech, Xi´an, China
Volume
1
fYear
2010
fDate
22-24 Oct. 2010
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
A modified LPV (Linear Parameter Varying) modeling method for nonlinear system was put forward and is applied in modeling a turbofan engine system. First, a quasi-LPV model of a turbofan engine is designed at various engine operating points using linearized models of the engine dynamics and the scheduling variable is the low-pressure compressor speed. Then, according to the feedback method, the quasi-LPV model is modified: an estimated fuel, which is calculated by using the scheduling variable, is feed back, and a close-loop is constructed via a PI plant, thus a modified LPV model of the turbofan engine is constructed. Last, a speedup process from idler speed to max speed is simulated with the turbofan engine´s nonlinear model, the quasi-LPV model and the modified LPV model, separately. The simulation results show that the modified LPV model achieved much higher steady precision and fidelity than the quasi-LPV model.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
A modified LPV (Linear Parameter Varying) modeling method for nonlinear system was put forward and is applied in modeling a turbofan engine system. First, a quasi-LPV model of a turbofan engine is designed at various engine operating points using linearized models of the engine dynamics and the scheduling variable is the low-pressure compressor speed. Then, according to the feedback method, the quasi-LPV model is modified: an estimated fuel, which is calculated by using the scheduling variable, is feed back, and a close-loop is constructed via a PI plant, thus a modified LPV model of the turbofan engine is constructed. Last, a speedup process from idler speed to max speed is simulated with the turbofan engine´s nonlinear model, the quasi-LPV model and the modified LPV model, separately. The simulation results show that the modified LPV model achieved much higher steady precision and fidelity than the quasi-LPV model.
Keywords
compressors; jet engines; linear systems; nonlinear control systems; scheduling; three-term control; velocity control; PI plant; PID; compressor speed; engine dynamics; feedback method; fuel estimation; linearized model; nonlinear system; quasi-linear parameter varying model; scheduling variable; turbofan engine system; PID; aeroengine; gain-scheduling; linear parameter varying model;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location
Taiyuan
Print_ISBN
978-1-4244-7235-2
Type
conf
DOI
10.1109/ICCASM.2010.5619269
Filename
5619269
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