基于干扰观测器的飞行器主动抗干扰控制方法

doi:10.12305/j.issn.1001-506X.2024.11.30

Abstract

Abstract:

Aiming at the influence of the uncertainty of high-speed aircraft model parameters and external disturbances on the flight control system, an active disturbance rejection control method based on disturbance observer (DOB) is presented. The proposed method the difference between the actual object and the nominal model caused by external disturbances and model uncertainties to the controller input, so as to realize the compensation control of the total disturbances of system. The effectiveness and correctness of the proposed method are verified through six degree of freedom simulation. Simulation results show that the proposed method can effectively achieve attitude tracking control of high-speed aircraft and improve control quality of the system. The proposed method has a simple structure and improves the system's ability to suppress low-frequency interference without affecting the existing control circuit. It has strong engineering feasibility and provides a design method for high-speed aircraft attitude control systems.

Key words: active disturbance rejection, disturbance observer (DOB), flight control, attitude

CLC Number:

V448.222

Limin JIANG, Shuxuan CHEN, Kunfeng LU. Method of aircraft active disturbance rejection control based on disturbance observer[J]. Systems Engineering and Electronics, 2024, 46(11): 3883-3892.

Figures/Tables 14

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特征点	a₁₁	a₁₂	B₁	a₂₁	a₂₂	B₂
特征点1	0.220 4	0.003 1	0.025 7	0.258 7	-56.687 0	39.229 3
特征点2	0.237 0	-0.001 6	0.027 8	0.219 6	-9.957 4	16.304 6

参数	特征点1	特征点2
上幅值裕度/dB	10.03(无DOB)	17.92(无DOB)
上幅值裕度/dB	8.94(本文方法)	17.42(本文方法)
下幅值裕度/dB	3.33(无DOB)	5.08(无DOB)
下幅值裕度/dB	3.30(本文方法)	5.05(本文方法)
相位裕度/(°)	13.73(无DOB)	17.62(无DOB)
相位裕度/(°)	13.75(本文方法)	17.46(本文方法)
截频/(rad/s)	21.16(无DOB)	18.22(无DOB)
截频/(rad/s)	21.26(本文方法)	18.39(本文方法)

工况	质心偏差	推力偏差/%	风干扰
工况1	正	-9	有
工况2	无	0	有
工况3	负	9	有

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Method of aircraft active disturbance rejection control based on disturbance observer

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