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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (11): 524688-524688.doi: 10.7527/S1000-6893.2020.24688

• Article • Previous Articles     Next Articles

Deep deterministic policy gradient algorithm for UAV control

HUANG Xu1,2, LIU Jiarun1,2, JIA Chenhui1,2, WANG Zhaolei1,2, ZHANG Jun1,2   

  1. 1. Beijing Aerospace Automatic Control Institute, Beijing 100854, China;
    2. National Key Laboratory of Science and Technology on Aerospace Intelligent Control, Beijing 100854, China
  • Received:2020-08-31 Revised:2020-09-04 Published:2020-09-17
  • Supported by:
    National Natural Science Foundation of China (61773341)

Abstract: The deep deterministic policy gradient algorithm is used to train the agent to learn the flight control strategy of a small UAV. The velocity, position and attitude angle of multi data frames are taken as the observation state of the agent, the rudder deflection angle and engine thrust command the output actions of the agent, and the nonlinear model and flight environment of the UAV the learning environment of the agent. In the interaction process between the agent and the environment, sparse rewards are provided to achieve certain goals, in addition to the dense punishment including error information, thereby effectively improving the diversity of flight data samples and enhancing the learning efficiency of the agent. The agent finally realizes the end-to-end flight control from the position, velocity and attitude angle to the control variables. In addition, the flight control simulations under the conditions of variable track point, model parameter deviation, disturbance and fault are carried out. Simulation results show that the agent can not only effectively complete the training task, but also deal with a variety of flight tasks not learned during training, showing excellent generalization ability and exhibiting certain research value and engineering reference value of the method.

Key words: deep deterministic policy gradient, small UAV, flight control, end to end, sparse reward

CLC Number: