航空发动机加力燃烧燃油控制系统主动容错控制

doi:10.7527/S1000-6893.2022.28063

Abstract

Abstract:

To improve the fault tolerance and reliability of the fuel control system of the aeroengine afterburner， a novel Adaptive Integral Robust Fault Tolerant Control （AIRFTC） strategy is proposed for the Fuel Metering Unit （FMU） with unmatched disturbances， sensor faults and internal leakage faults. The proposed Nonlinear Unknown Input Observer （NUIO） based on adaptive parameter estimation can effectively estimate the system state and sensor fault， while not moderated by unmatched disturbances and internal leakage faults. The introduced filter error function combines the integral robust control with adaptive control to address internal leakage faults with sensor noise and unmatched disturbances. By Lyapunov method， we can prove that the displacement of FMU can track reference signal asymptotically. The simulation results show that the control performances of AIRFTC are as low as 0.035 6， 0.001 8， 0.013 6， 25.197 3， 4×10^-4 mm in terms of maximum tracking error， the average tracking error， the standard value of tracking error， ITAE， and ITSE， respectively. This paper can provide a novel method and glimpse for aeroengine health management.

Key words: aeroengine, sensor fault, internal leakage fault, nonlinear unknown input observer, active fault tolerant control

CLC Number:

V233.91

Jie HANG, Yunhua LI, Liman YANG. Active fault tolerant control of fuel control system of aeroengine afterburner[J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(14): 328063-328063.

Figures/Tables 16

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References 20

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参数	数值	参数	数值
P_s/MPa	8	β_e/MPa	200
P_t/MPa	0.02	F_mp1/（N∙m∙s）	100
m_p/kg	0.761 67	F_mp2/（N∙m∙s）	200
A_p/m²	1.1×10^-4	F_mc1	900
f_v/（N∙m∙s）	45	F_mc2	35
C_t0/（m⁵·N^-1∙s^-1）	1.8×10^-12	F_mc3	1.5

控制策略	M_e/mm	μ_e/mm	σ_e/mm	ITAE/mm	ITSE/mm
无NUIO	11.505	-9.997	1.069	1.97×10⁴	196.982
有NUIO	0.025	0.002	0.012	20.618 0	3.4×10^-4

故障模式	控制策略	M_e/mm	μ_e/mm	σ_e/mm	ITAE/mm	ITSE/mm
严重内泄漏故障	AIRFTC	0.054	0.002	0.014	23.140	3×10^-4
	ARFTC	0.081	0.003	0.020	37.423	8×10^-4
	AFTC	0.292	0.048	0.306	588.959	0.206
	VFPI	0.580	0.010	0.412	664.125	0.284
早期内泄漏故障	AIRFTC	0.036	0.009	0.017	25.120	4×10^-4
	ARFTC	0.051	0.003	0.020	37.423	7×10^-4
	AFTC	0.192	0.038	0.186	405.855	0.121
	VFPI	0.420	0.005	0.269	429.728	0.123
轻微内泄漏故障	AIRFTC	0.024	0.001	0.008	13.185	2×10^-4
	ARFTC	0.042	0.002	0.017	28.785	7×10^-4
	AFTC	0.102	0.014	0.174	385.854	0.102 6
	VFPI	0.384	0.003	0.241	391.173	0.104 5
2种故障并存	AIRFTC	0.035 6	0.001 8	0.013 6	25.197 3	4×10^-4
	ARFTC	0.050 9	0.002 7	0.020 1	37.424 1	9×10^-4
	AFTC	0.492 1	0.047 8	0.306 0	588.961 0	0.205 9
	VFPI	0.580 3	0.010 3	0.412 1	644.125 8	0.285 3

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Active fault tolerant control of fuel control system of aeroengine afterburner

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