ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Gain adaptive multi-mode switching control for coaxial high-speed helicopter
Received date: 2023-05-31
Revised date: 2023-07-24
Accepted date: 2023-10-07
Online published: 2023-10-24
Supported by
National Natural Science Foundation of China(61803200);Key Laboratory Fund of Equipment Pre-research(6142220180304)
To solve the problem of nonlinear strong-coupling multi-mode switching stability control of coaxial twin-rotor high-speed helicopter, a average dwell time switching control strategy is proposed based on gain adaptivity. According to the dynamic model of coaxial high-speed helicopter, the control characteristics of its rudder surface are analyzed,and a multi-mode gain adaptive switching control structure is constructed. A non-affine nonlinear small gain high frequency filter adaptive law is proposed. The uncertainty of multi-mode switching is quickly compensated and high-frequency noise is reduced to ensure the steady-state and transient-state performance of the system. Then, a switching submodel set with uncertainties is established, and the average dwell time switching control law is designed based on adaptive gain. The control stability of the closed-loop system is proved based on the small gain theorem and Lyapunov stability theory, which ensures the stable switching control of the coaxial high-speed helicopter in low-speed-transition-high-speed full mode. Finally, a comparison with the existing control methods verifies the feasibility and effectiveness of the proposed control strategy.
Fengying ZHENG , Zhimin SHEN , Yaqin LI , Kaizhao XU , Xinhua WANG . Gain adaptive multi-mode switching control for coaxial high-speed helicopter[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(9) : 529088 -529088 . DOI: 10.7527/S1000-6893.2023.29088
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