Angular rate enhanced Overload Controller Design for Low-speed UAVs

Abstract

This paper investigates the overload controller for low-speed UAV maneuvering flight. Compared with high-speed and supersonic vehicles, low-speed UAVs are more sensitive to atmospheric disturbances during maneuvering and their signals are more sensitive. This paper combines UAV overload control theory and L1 adaptive theory to propose a longitudinal attitude control method based on overload control for low-speed UAVs. The method uses overload as the outer loop and pitch angle rate as the inner loop, and provides a reliable control scheme for maneuvering low-speed UAVs. Through simulation experiments, the controller proposed in this paper is compared with the conventional classical three-loop overload controller. The results show that the controller of this paper has faster angular rate response and stronger anti-interference capability under the same overload corresponding conditions.