Notice of RetractionModified Linear Parameter Varying modeling for turbofan engine

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.