基于死区补偿的氧调器平稳切换自抗扰控制

doi:10.7527/S1000-6893.2018.21875

Abstract

Abstract: The oxygen pressure regulator system (oxygen regulator system) for fighter aircraft is essential to pilot's flying qualities. However, the oxygen regulator system is susceptible to the factors such as flight environment and breathing state of pilots, and most valves of the oxygen regulator have dead-zone, which causes steady-state error of the control system and makes control more difficult. Conventional control strategy cannot compensate the big dead-zone and resist disturbance either. To solve this problem, this paper develops an oxygen regulator model based on the valve driven by the voice coil motor. In consideration of the dead-zone characteristics of the model, the dead-zone compensation and double-limiting module are adopted to design the smooth-switching active disturbance rejection control (ADRC) strategy based on the feed-forward compensation. The simulation and comparison results demonstrate that by using the same set of control parameters, the respiratory pressure in the oxygen mask can be effectively and rapidly controlled within the allowable limits of respiratory resistance at various respiratory frequencies, and the breathing resistance is lower than the general ADRC which considers the dead-zone as disturbance. The robustness and immunity of the strategy are verified.

Key words: Active Disturbance Rejection Control (ADRC), oxygen supply system, oxygen regulator, limiting, dead-zone compensation

CLC Number:

V245.4
TP29

DONG Fangyou, SUN Qinglin, ZHANG Xiaolei, JIANG Yuxin, SUN Mingwei, CHEN Zengqiang. Smooth-switching active disturbance rejection control for oxygen regulator based on dead-zone compensation[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(5): 321875-321875.

References

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Smooth-switching active disturbance rejection control for oxygen regulator based on dead-zone compensation

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