Trajectory Planning in Time-Varying Adverse Weather for Fixed-Wing Aircraft Using Robust Model Predictive Control

The avoidance of adverse weather is an inevitable safety-relevant task in aviation. Automated avoidance can help to improve safety and reduce costs in manned and unmanned aviation. For this purpose, a straightforward trajectory planner for a single-source-single-target problem amidst moving obstacle...

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Main Author: Federico Mothes
Format: Article
Language:English
Published: MDPI AG 2019-06-01
Series:Aerospace
Subjects:
Online Access:https://www.mdpi.com/2226-4310/6/6/68
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author Federico Mothes
author_facet Federico Mothes
author_sort Federico Mothes
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description The avoidance of adverse weather is an inevitable safety-relevant task in aviation. Automated avoidance can help to improve safety and reduce costs in manned and unmanned aviation. For this purpose, a straightforward trajectory planner for a single-source-single-target problem amidst moving obstacles is presented. The functional principle is explained and tested in several scenarios with time-varying polygonal obstacles based on thunderstorm nowcast. It is furthermore applicable to all kinds of nonholonomic planning problems amidst nonlinear moving obstacles, whose motion cannot be described analytically. The presented resolution-complete combinatorial planner uses deterministic state sampling to continuously provide globally near-time-optimal trajectories for the expected case. Inherent uncertainty in the prediction of dynamic environments is implicitly taken into account by a closed feedback loop of a model predictive controller and explicitly by bounded margins. Obstacles are anticipatory avoided while flying inside a mission area. The computed trajectories are time-monotone and meet the nonholonomic turning-flight constraint of fixed-wing aircraft and therefore do not require postprocessing. Furthermore, the planner is capable of considering a time-varying goal and automatically plan holding patterns.
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spelling doaj.art-484dcef6e2af4da3a126c2bd93c477b92022-12-22T00:40:13ZengMDPI AGAerospace2226-43102019-06-01666810.3390/aerospace6060068aerospace6060068Trajectory Planning in Time-Varying Adverse Weather for Fixed-Wing Aircraft Using Robust Model Predictive ControlFederico Mothes0Department of Mechanical, Automotive and Aeronautical Engineering, University of Applied Sciences Munich, 80335 Munich, GermanyThe avoidance of adverse weather is an inevitable safety-relevant task in aviation. Automated avoidance can help to improve safety and reduce costs in manned and unmanned aviation. For this purpose, a straightforward trajectory planner for a single-source-single-target problem amidst moving obstacles is presented. The functional principle is explained and tested in several scenarios with time-varying polygonal obstacles based on thunderstorm nowcast. It is furthermore applicable to all kinds of nonholonomic planning problems amidst nonlinear moving obstacles, whose motion cannot be described analytically. The presented resolution-complete combinatorial planner uses deterministic state sampling to continuously provide globally near-time-optimal trajectories for the expected case. Inherent uncertainty in the prediction of dynamic environments is implicitly taken into account by a closed feedback loop of a model predictive controller and explicitly by bounded margins. Obstacles are anticipatory avoided while flying inside a mission area. The computed trajectories are time-monotone and meet the nonholonomic turning-flight constraint of fixed-wing aircraft and therefore do not require postprocessing. Furthermore, the planner is capable of considering a time-varying goal and automatically plan holding patterns.https://www.mdpi.com/2226-4310/6/6/68trajectory planningweather avoidancemoving obstaclemodel predictive controlnonholonomic constraintfixed-wing aircraft
spellingShingle Federico Mothes
Trajectory Planning in Time-Varying Adverse Weather for Fixed-Wing Aircraft Using Robust Model Predictive Control
Aerospace
trajectory planning
weather avoidance
moving obstacle
model predictive control
nonholonomic constraint
fixed-wing aircraft
title Trajectory Planning in Time-Varying Adverse Weather for Fixed-Wing Aircraft Using Robust Model Predictive Control
title_full Trajectory Planning in Time-Varying Adverse Weather for Fixed-Wing Aircraft Using Robust Model Predictive Control
title_fullStr Trajectory Planning in Time-Varying Adverse Weather for Fixed-Wing Aircraft Using Robust Model Predictive Control
title_full_unstemmed Trajectory Planning in Time-Varying Adverse Weather for Fixed-Wing Aircraft Using Robust Model Predictive Control
title_short Trajectory Planning in Time-Varying Adverse Weather for Fixed-Wing Aircraft Using Robust Model Predictive Control
title_sort trajectory planning in time varying adverse weather for fixed wing aircraft using robust model predictive control
topic trajectory planning
weather avoidance
moving obstacle
model predictive control
nonholonomic constraint
fixed-wing aircraft
url https://www.mdpi.com/2226-4310/6/6/68
work_keys_str_mv AT federicomothes trajectoryplanningintimevaryingadverseweatherforfixedwingaircraftusingrobustmodelpredictivecontrol