Journal of Projectiles, Rockets, Missiles and Guidance >
Decoupling Control Design of Quadrotor in Forward Flight Based on Improved ADRC
Received date: 2024-08-08
Online published: 2025-09-22
Out of consideration of the nonlinear and strong coupling characteristics in quadrotor's forward flight missions and complex maneuvers, an improved ADRC framework is proposed for its attitude control. Firstly, based on the basic principles and decoupling ideas of this law, the decoupling between the state parameter and control parameter is carried out for the quadrotor attitude dynamics in forward flight. Secondly, a HNLTD is constructed by introducing the hyperbolic tangent function, so as to ameliorate the transition process of the input signals. Moreover, an AFTESO design is improved with the help of adaptive control law and power terms to estimate the total disturbance of the decoupled system in real time, which is used to compensate the control commands to realize the fast and stable convergence of the attitude response within a limited time, as well as the anti-interference to the coupling between the channels. In addition, simulation of the quadrotor attitude control in forward flight is developed with some disturbance. Results show that the transition process of the input signals is not exceeded and the delay is less than 0.1 s with HNLTD. AFTESO is able to estimate and compensate the disturbance within 0.3 s. All in all, the attitude response does not have excessive adjustment. The pitching and rolling channels can all track the commands fast and accurately in 0.09 s, and the yawing channel can also reach the level of 0.12 s. Therefore, the overall dynamic quality of the whole system while decoupling is well and stable.
WANG Lu , LIU Haipeng , LI Shuaishuai , LIU Yan , GUO Kaiyang . Decoupling Control Design of Quadrotor in Forward Flight Based on Improved ADRC[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2025 , 45(4) : 571 -580 . DOI: 10.15892/j.cnki.djzdxb.2025.04.016
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