Optimization of Full Trajectory Pitch Tracking Control for Low Altitude Penetration of UAV

Abstract

The low altitude penetration stage of UAV is easily affected by parameter perturbation, which leads to poor anti-damage in the process of penetration. In order to improve the stability of low altitude penetration of UAV, a full trajectory pitching control algorithm based on adaptive dynamic feedback tracking and parameter fusion is proposed. The control objective function of low altitude penetration of UAV is constructed at the constraint cost of minimum damage probability, and the parameters such as pitch angle, steering angle and acceleration are used as the control constraint parameters, and the adaptive learning training for tracking control of the whole trajectory is carried out. The dynamic inverse feedback parameter adjustment model of low altitude penetration is established, the whole trajectory control variable is qualitatively treated, the equivalent mathematical model of anti-interception of UAV is constructed, and the yaw angle is corrected by adaptive dynamic feedback tracking method. The whole trajectory steady-state tracking control of UAV with low altitude penetration is realized. The simulation results show that the algorithm has good steady-state property and strong yaw correction ability in the whole trajectory pitch tracking control of UAV at low altitude penetration stage, which improves the ability of anti-damage in low-altitude penetration stage, it has good control stability and robustness.