Adaptive trajectory following control of a fixed-wing UAV in presence of crosswind
نویسندگان
چکیده
An adaptive backstepping approach to obtain directional control of a fixed-wing UAV in presence of unknown crosswind is developed in this paper. The dynamics of the cross track error with respect to a desired trajectory is derived from the lateral airplane equations of motion. Adaptation laws are proposed to estimate the parameters of the unknown disturbances and are employed in closed-loop system. The stability analysis is proved using Lyapunov theory. In addition, several simulations taking into account unknown wind gusts are performed to analyze the behavior and the robustness of the control scheme. A test platform has been developed in order to validate the proposed control law.
منابع مشابه
Adaptive Trajectory Following for a Fixed-Wing UAV in Presence of Crosswind
An adaptive backstepping approach to obtain directional control of a xed-wing UAV in presence of unknown crosswind is developed in this paper. The dynamics of the cross track error with respect to a desired trajectory is derived from the lateral airplane equations of motion. Adaptation laws are proposed to estimate the parameters of the unknown disturbances and are employed in closedloop system...
متن کاملExperimental validation of an autonomous control system on a mobile robot platform
An autonomous control system designed for a non-holonomic wheeled mobile robot that is programmed to emulate a fixed-wing unmanned air vehicle (UAV) flying at constant altitude is experimentally validated. The overall system is capable of waypoint navigation, threat avoidance, real-time trajectory generation and trajectory tracking. Both the wheeled mobile robot experimental platform and the hi...
متن کاملNonlinear Trajectory Tracking for Fixed Wing UAVs via Backstepping and Parameter Adaptation
Equipping a fixed wing unmanned air vehicle (UAV) with low-level autopilots, we derive high-level velocity and roll angle control laws for the UAV. Backstepping techniques are applied to design the velocity and roll angle control laws from known velocity and heading angle control laws that explicitly account for velocity and heading rate constraints of the UAV. Regarding unknown autopilot const...
متن کاملRobust MRAC for a Wing Rock Phenomenon in Delta Wing Aircrafts
Wing rock phenomenon is an undesired motion appears in high angles of attack where a rolling in the aircraft in positive and negative roll angles with specified amplitude and frequency is occurred. In this paper two adaptive controllers suggested to control the rolling dynamics under wing rock phenomenon for a delta wing aircraft with presence of disturbance. Disturbance was considered as unmat...
متن کاملAdaptive Nonlinear Model Predictive Path Tracking Control for a Fixed-Wing Unmanned Aerial Vehicle
This paper presents an adaptive Nonlinear Model Predictive Control (NMPC) for the path tracking control of a fixed-wing unmanned aircraft. The objective is to minimize the mean and maximum error between the reference trajectory and the UAV. Navigating in a cluttered environment requires accurate tracking. However linear controllers cannot provide good tracking performance due to nonlinearities ...
متن کامل