Title :
A modified LPV modeling technique for turbofan engine control system
Author :
Shu-Qing, Li ; Sheng-Xiu, Zhang
Author_Institution :
Xi´´an Res. Inst. Of High-Tech, Xi´´an, China
Abstract :
A modified LPV (Linear Parameter Varying) modeling technique for nonlinear system was put forward and is applied in a turbofan engine model and control analysis. First, a quasi-LPV model of a turbofan engine is designed at various engine operating points using linearized models and the scheduling variable is the fan speed. Then, according to the feedback method, the quasi-LPV model is modified by using an estimated fuel, which is calculated by using the scheduling variable and feedbacked, and a PI regulator. Last, the simulation results about a speedup process in opened-loop system and closed-loop control system of the turbofan engine show that the modified LPV model achieved much higher steady precision and fidelity than the quasi-LPV model.
Keywords :
PI control; closed loop systems; control system analysis; feedback; jet engines; linear systems; linearisation techniques; nonlinear control systems; open loop systems; PI regulator; closed-loop control system; control analysis; fan speed; feedback method; fuel estimation; linear parameter varying modeling; linearized model; modified LPV modeling technique; nonlinear system; opened-loop system; scheduling variable; speedup process; turbofan engine control system; Artificial neural networks; Jacobian linearization; PID controller; feedback; linear parameter varying model; turbofan engine;
Conference_Titel :
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location :
Taiyuan
Print_ISBN :
978-1-4244-7235-2
Electronic_ISBN :
978-1-4244-7237-6
DOI :
10.1109/ICCASM.2010.5619328