Wind gust estimation for precise quasi-hovering control of quadrotor aircraft

This paper focuses on the control of quadrotor vehicles without wind sensors that are required to accurately track low-speed trajectories in the presence of moderate yet unknown wind gusts. By modeling the wind disturbance as exogenous inputs, and assuming that compensation of its effects can be ach...

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Published inControl engineering practice Vol. 116; p. 104930
Main Authors Azid, Sheikh Izzal, Kumar, Krishneel, Cirrincione, Maurizio, Fagiolini, Adriano
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2021
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Abstract This paper focuses on the control of quadrotor vehicles without wind sensors that are required to accurately track low-speed trajectories in the presence of moderate yet unknown wind gusts. By modeling the wind disturbance as exogenous inputs, and assuming that compensation of its effects can be achieved through quasi-static vehicle motions, this paper proposes an innovative estimation and control scheme comprising a linear dynamic filter for the estimation of such unknown inputs and requiring only position and attitude information. The filter is built upon results from Unknown Input Observer theory and allows estimation of wind and vehicle state without measurement of the wind itself. A simple feedback control law can be used to compensate for the offset position error induced by the disturbance. The proposed filter is independent of the recovery control scheme used to nullify the tracking error, as long as the corresponding applied rotor speeds are available. The solution is first checked in simulation environment by using the Robot Operating System middleware and the Gazebo simulator and then experimentally validated with a quadcopter system flying with real wind sources.
AbstractList This paper focuses on the control of quadrotor vehicles without wind sensors that are required to accurately track low-speed trajectories in the presence of moderate yet unknown wind gusts. By modeling the wind disturbance as exogenous inputs, and assuming that compensation of its effects can be achieved through quasi-static vehicle motions, this paper proposes an innovative estimation and control scheme comprising a linear dynamic filter for the estimation of such unknown inputs and requiring only position and attitude information. The filter is built upon results from Unknown Input Observer theory and allows estimation of wind and vehicle state without measurement of the wind itself. A simple feedback control law can be used to compensate for the offset position error induced by the disturbance. The proposed filter is independent of the recovery control scheme used to nullify the tracking error, as long as the corresponding applied rotor speeds are available. The solution is first checked in simulation environment by using the Robot Operating System middleware and the Gazebo simulator and then experimentally validated with a quadcopter system flying with real wind sources.
ArticleNumber 104930
Author Azid, Sheikh Izzal
Cirrincione, Maurizio
Kumar, Krishneel
Fagiolini, Adriano
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  fullname: Fagiolini, Adriano
  email: fagiolini@unipa.it
  organization: Mobile and Intelligent Robots @ Panormous Laboratory (MIRPALab), Department of Engineering, University of Palermo, Italy
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Keywords Robust control
ROS/Gazebo
Disturbance observers
Unknown Input-state observers
Robotics
Quadrotors
Language English
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Snippet This paper focuses on the control of quadrotor vehicles without wind sensors that are required to accurately track low-speed trajectories in the presence of...
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elsevier
SourceType Enrichment Source
Index Database
Publisher
StartPage 104930
SubjectTerms Disturbance observers
Quadrotors
Robotics
Robust control
ROS/Gazebo
Unknown Input-state observers
Title Wind gust estimation for precise quasi-hovering control of quadrotor aircraft
URI https://dx.doi.org/10.1016/j.conengprac.2021.104930
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