Smoke simulation in aircraft cargo compartments based on model-free adaptive control

doi:10.16265/j.cnki.issn1003-3033.2025.12.0081

Abstract

Abstract:

To control the simulated smoke flow field (used as a substitute for real fire smoke in the airworthiness verification experiments for aircraft cargo compartment smoke detection), this paper established a closed-loop flow control experimental platform for simulated smoke based on a full-scale aircraft cargo compartment mock-up. Control law design was conducted using MFAC theory. The closed-loop flow control effects of simulated smoke were verified with real fire smoke mass concentration as the control target. Additionally, the influence of control law parameters on control effect was explored. The experimental results demonstrate that MFAC method can effectively overcome the adverse effects of unmodeled dynamics in turbulent flow fields on closed-loop control, and achieve the approximation of the non-stationary flow fields between simulated smoke and real fire smoke. Compared with the PID control method, the control performance can be improved by more than 20%.

Key words: model-free adaptive control (MFAC), aircraft cargo compartment, simulated smoke, flow control, airworthiness

CLC Number:

X949

YANG Jianzhong, WANG Pengxiang, CHEN Xiyuan. Smoke simulation in aircraft cargo compartments based on model-free adaptive control[J]. China Safety Science Journal, 2025, 35(12): 18-25.

Figures/Tables 7

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探测器位置1			探测器位置2
控制方法	高通风量	低通风量	控制方法	高通风量	低通风量
PID	488.61	382.36	PID	570.57	587.48
MFAC:a=2	259.96	244.78	MFAC:a=1	294.44	353.51
MFAC:a=3	234.78	231.61	MFAC:a=2	288.83	295.54
MFAC:a=4	262.88	260.20	MFAC:a=3	319.95	342.80