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Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (6): 1283-1289.doi: 10.3969/j.issn.1000-1093.2021.06.019

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Design of A Backstepping Integral Adaptive Controller for Quadrotor UAV

WANG Huidong1, ZHOU Laihong2   

  1. (1.Department of Numerical Control Technology, Baotou Vocational and Technical College, Baotou 014030, Inner Mongolia, China; 2.School of Mechanical and Electrical Engineering, Xinyu University, Xinyu 338004, Jiangxi, China)
  • Online:2021-07-19

Abstract: For the quadrotor unmanned aerial vehicle (UAV) with mass varying in practical application, a mass observer based on adaptive control theory is designed to estimate the real-time mass and correct the mass parameter of UAV. A backstepping integral adaptive controller (BIAC) for trajectory tracking of UAV is developed with the mass observer and the first kind of control error integral on the basis of classical backstepping controller (CBC). The control errors of system are asymptotically stabilized because the design process of controller is based on Lyapunov theory. The trajectory tracking simulation experiment was made in MATLAB/Simulink simulation environment. The simulated results indicate that the real-time mass of UAV can be estimated by using BIAC very well in the case of slow mass change or mass mutation of UAV, and the track error of ze-axis in earth coordinate system Exeyeze with BIAC is decreased by about 80% compared with CBC.

Key words: quadrotorunmannedaerialvehicle, backsteppingcontrol, adaptivecontrol, massobserver, errorintegral

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