Parameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation

Parafoil trajectory directly affects the power generation of a high-altitude wind power generation (HAWPG) device. Therefore, it is particularly important to optimize the parafoil trajectory and then to track it effectively. In this paper, the trajectory of the parafoil at high altitudes is optimize...

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Autores principales:	Xinyu Long, Mingwei Sun, Minnan Piao, Zengqiang Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pseudospectral method (PSM) trajectory optimization nonlinear programming (NLP) extended state observer (ESO) Technology T
Acceso en línea:	https://doaj.org/article/001c5c70c4ee4c13a8322b9c5e46fd51
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id	oai:doaj.org-article:001c5c70c4ee4c13a8322b9c5e46fd51
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spelling	oai:doaj.org-article:001c5c70c4ee4c13a8322b9c5e46fd512021-11-25T17:25:43ZParameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation10.3390/en142274601996-1073https://doaj.org/article/001c5c70c4ee4c13a8322b9c5e46fd512021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7460https://doaj.org/toc/1996-1073Parafoil trajectory directly affects the power generation of a high-altitude wind power generation (HAWPG) device. Therefore, it is particularly important to optimize the parafoil trajectory and then to track it effectively. In this paper, the trajectory of the parafoil at high altitudes is optimized and tracked in a comprehensively parameterized manner. Both the complex dynamic characteristics of the parafoil and the dexterous demand of the high-altitude controller are considered. Firstly, the trajectory variables and control signals are parameterized as Lagrange polynomials in terms of the corresponding values at the selected nodes. Then, the Radau pseudospectral method (PSM) is employed to reformulate the original dynamic trajectory optimization problem into a static nonlinear programming (NLP) problem. By doing so, the parameterized optimal trajectory, which has the maximum net power generation, can be obtained. To attenuate the strong nonlinear, multivariable and coupling characteristics of the flexible parafoil, a bandwidth parameterized linear extended state observer (ESO) is used to estimate and reject these dynamics explicitly in a unified way. Finally, the simulation results demonstrate the effectiveness of the proposed parameterized trajectory optimization and control strategies. The main contribution of this study is that complicated nonlinear parafoil dynamics with a complex trajectory can be well regulated by a PID-type linear time-invariant controller, which is appealing for practitioners.Xinyu LongMingwei SunMinnan PiaoZengqiang ChenMDPI AGarticlepseudospectral method (PSM)trajectory optimizationnonlinear programming (NLP)extended state observer (ESO)TechnologyTENEnergies, Vol 14, Iss 7460, p 7460 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pseudospectral method (PSM) trajectory optimization nonlinear programming (NLP) extended state observer (ESO) Technology T
spellingShingle	pseudospectral method (PSM) trajectory optimization nonlinear programming (NLP) extended state observer (ESO) Technology T Xinyu Long Mingwei Sun Minnan Piao Zengqiang Chen Parameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation
description	Parafoil trajectory directly affects the power generation of a high-altitude wind power generation (HAWPG) device. Therefore, it is particularly important to optimize the parafoil trajectory and then to track it effectively. In this paper, the trajectory of the parafoil at high altitudes is optimized and tracked in a comprehensively parameterized manner. Both the complex dynamic characteristics of the parafoil and the dexterous demand of the high-altitude controller are considered. Firstly, the trajectory variables and control signals are parameterized as Lagrange polynomials in terms of the corresponding values at the selected nodes. Then, the Radau pseudospectral method (PSM) is employed to reformulate the original dynamic trajectory optimization problem into a static nonlinear programming (NLP) problem. By doing so, the parameterized optimal trajectory, which has the maximum net power generation, can be obtained. To attenuate the strong nonlinear, multivariable and coupling characteristics of the flexible parafoil, a bandwidth parameterized linear extended state observer (ESO) is used to estimate and reject these dynamics explicitly in a unified way. Finally, the simulation results demonstrate the effectiveness of the proposed parameterized trajectory optimization and control strategies. The main contribution of this study is that complicated nonlinear parafoil dynamics with a complex trajectory can be well regulated by a PID-type linear time-invariant controller, which is appealing for practitioners.
format	article
author	Xinyu Long Mingwei Sun Minnan Piao Zengqiang Chen
author_facet	Xinyu Long Mingwei Sun Minnan Piao Zengqiang Chen
author_sort	Xinyu Long
title	Parameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation
title_short	Parameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation
title_full	Parameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation
title_fullStr	Parameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation
title_full_unstemmed	Parameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation
title_sort	parameterized trajectory optimization and tracking control of high altitude parafoil generation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/001c5c70c4ee4c13a8322b9c5e46fd51
work_keys_str_mv	AT xinyulong parameterizedtrajectoryoptimizationandtrackingcontrolofhighaltitudeparafoilgeneration AT mingweisun parameterizedtrajectoryoptimizationandtrackingcontrolofhighaltitudeparafoilgeneration AT minnanpiao parameterizedtrajectoryoptimizationandtrackingcontrolofhighaltitudeparafoilgeneration AT zengqiangchen parameterizedtrajectoryoptimizationandtrackingcontrolofhighaltitudeparafoilgeneration
_version_	1718412325951635456

Parameterized Trajectory Optimization and Tracking Control of High Altitude Parafoil Generation

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