For the problems of time-consuming calculation and data dependence in Takagi-Sugeno(T-S) fuzzy model of aero-engine

a new T-S modeling algorithm based on flight envelop division was proposed.The premise structure of fuzzy model was confirmed by dividing the flight envelop and selecting the nominal points.The state space model at each nominal point was regarded as the consequence of T-S model.Finally

the parameters of premise structure were identified by training.Simulation results show that the new algorithm shortens the modeling time.The absolute error of high-pressure rotor speed is less than 0.25%

and that of low-pressure rotor speed is less than 0.10%.