Journal of System Simulation ›› 2015, Vol. 27 ›› Issue (9): 1997-2007.

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3D Trajectory Tracking of PX4 Quadrotor Based on Improved Dynamic Inversion

Hu Yueli1,2, Cai Weiping1, Yang Wenrong2   

  1. 1. College of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China;
    2. Microelectronic Research and Development Center, Shanghai University, Shanghai 200072, China
  • Received:2015-05-15 Revised:2015-07-10 Online:2015-09-08 Published:2020-08-07
  • About author:Hu Yueli(1959-), male, Shanghai, China, Ph.D, professor, main research directions: image processing, machine vision, chip system and design, control theory; Cai Weiping(1989-), female, Hubei, China, master graduate student, main research directions: embedded system, research and design of control system; Yang Wenrong (1969-), male, Shanghai, China, Ph.D, associate professor, main research directions: mixed signal integrated circuit design.

Abstract: An improved dynamic inversion method was proposed for the underactuation and strong coupling in attitude variables of the quadrotors, namely, combining model reference adaptive control (MRAC) with dynamic inversion in the fast variable loop in the system. Through the establishment of dynamic model of the quadrotor and motor model, the control law of the attitude angle and position was deduced. The MATLAB simulation for the scheme was analysed and compared with conventional dynamic inversion, and also simulated in the situation that tracking a given tracjectory with a 10% weight reduction from it's load. Simulation with respect to both scheme show that the improved control structure can quickly adapt to external disturbance and mass change and have higher precision tracking performance than conventional ones.

Key words: quadrotor, trajectory tracking, dynamic inversion, MRAC

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