深度确定性策略梯度算法用于无人飞行器控制

doi:10.7527/S1000-6893.2020.24688

Abstract

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:

HUANG Xu, LIU Jiarun, JIA Chenhui, WANG Zhaolei, ZHANG Jun. Deep deterministic policy gradient algorithm for UAV control[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(11): 524688-524688.

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Deep deterministic policy gradient algorithm for UAV control

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