Investigation of Unmeasured Parameters Estimation for Distributed Control Systems

Table 1

Variables of aeroengine T-S fuzzy model.

State variables	Health parameters	Control inputs	Measured outputs	Unmeasured outputs
nl—low-pressure spool speed	Low-pressure compressor (LPC) efficiency	—fuel flow	nl—low-pressure spool speed	T5—LPT exit total temperature
nh—high-pressure spool speed	LPC flow capacity	A8—nozzle area	nh—high-pressure spool speed	Fn—net thrust
	Low-pressure turbine (LPT) efficiency		P2b—LPC exit total pressure	ΠT—turbine pressure ratio
	LPT flow capacity		T2b—LPC exit total temperature
			T3—HPC exit total temperature