Minimum-Time Attitude Control of Deformable Solar Sails with Model Uncertainty

Eldad, Ofer; Lightsey, E. Glenn; Claudel, Christian

doi:10.2514/1.a33713

Cited by 12 publications

(6 citation statements)

References 14 publications

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“…As sails get larger, they also become heavier; however, in order to lower launch mass, they are designed to be as thin and light as possible. As a result, the rigid-body assumption in the sail dynamics becomes less valid, and there arises a need to incorporate flexibility effects [131]. A major challenge in determining the flexibility of a sail in a land based laboratory setting is its inability to be deployed and tested in vacuum and zero gravity conditions.…”

Section: Design Considerations and Technologiesmentioning

confidence: 99%

“…A major challenge in determining the flexibility of a sail in a land based laboratory setting is its inability to be deployed and tested in vacuum and zero gravity conditions. Multiple methodologies have been undertaken to model the flexibility characteristics of solar sails [131]. One such research involves parametric studies of square sails (150 m length) using Finite Element Analysis (FEA).…”

Section: Design Considerations and Technologiesmentioning

confidence: 99%

“…One such research involves parametric studies of square sails (150 m length) using Finite Element Analysis (FEA). In this study, the effects of sail size, stiffness, and sail membrane parameters on static sail deflection and natural frequencies are examined [131].…”

Section: Design Considerations and Technologiesmentioning

confidence: 99%

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An Overview of Cube-Satellite Propulsion Technologies and Trends

2017

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CubeSats provide a cost effective means to perform scientific and technological studies in space. Due to their affordability, CubeSat technologies have been diversely studied and developed by educational institutions, companies and space organizations all over the world. The CubeSat technology that is surveyed in this paper is the propulsion system. A propulsion system is the primary mobility device of a spacecraft and helps with orbit modifications and attitude control. This paper provides an overview of micro-propulsion technologies that have been developed or are currently being developed for CubeSats. Some of the micro-propulsion technologies listed have also flown as secondary propulsion systems on larger spacecraft. Operating principles and key design considerations for each class of propulsion system are outlined. Finally, the performance factors of micro-propulsion systems have been summarized in terms of: first, a comparison of thrust and specific impulse for all propulsion systems; second, a comparison of power and specific impulse, as also thrust-to-power ratio and specific impulse for electric propulsion systems.

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Section: Design Considerations and Technologiesmentioning

confidence: 99%

Section: Design Considerations and Technologiesmentioning

confidence: 99%

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An Overview of Cube-Satellite Propulsion Technologies and Trends

2017

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“…This coupling is studied for two particular controllers over a large solar sail in [18]. Studies on how to model the deformation of large structures in space are also conducted in [4,7,22,25].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Controller Design for a Flexible Spacecraft

Gutierrez

Heidecker

2020

J Astronaut Sci

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This paper combines the nonlinear Udwadia-Kalaba control approach with the Assumed Mode Method to model flexible structures and derives an attitude controller for a spacecraft. The study case of this paper is a satellite with four flexible cantilever beams attached to a rigid central hub. Two main topics are covered in this paper. The first one is the formulation of the equation of motion and the second one is the nonlinear controller design. The combination of these two techniques is able to provide a controller that damps the vibration of a flexible structure while achieving the desired rigid-motion state.

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“…In [9], the authors propose an intelligent flight control scheme based on reinforcement learning technique. Besides, many other control methods, such as fuzzy control, neural network control, backstepping control, and model following control, have been applied on this issue [10][11][12][13][14][15][16][17][18][19][20]. It should be noted that various feedback linearizations have been applied to this issue [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Gliding-Guided Projectile Attitude Tracking Controller Design Based on Improved Adaptive Twisting Sliding Mode Algorithm

Zhang

2020

International Journal of Aerospace Engineering

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The finite-time attitude tracking control for gliding-guided projectile with unmatched and matched disturbance is investigated. An adaptive variable observer is used to provide estimation for the unmeasured state which contains unmatched disturbance. Then, an improved adaptive twisting sliding mode algorithm is proposed to compensate for the matched disturbance dynamically with better transient quality. Finally, a proof of the finite-time convergence of the closed-loop system under the disturbance observer and the adaptive twisting sliding mode-based controller is derived using the Lyapunov technique. This attitude tracking control scheme does not require any information on the bounds of uncertainties. Simulation results demonstrate that the proposed method which is able to acquire the minimum possible values of the control gains guaranteeing the finite-time convergence performs well in chattering attenuation and tracking precision.

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Minimum-Time Attitude Control of Deformable Solar Sails with Model Uncertainty

Cited by 12 publications

References 14 publications

An Overview of Cube-Satellite Propulsion Technologies and Trends

An Overview of Cube-Satellite Propulsion Technologies and Trends

Nonlinear Controller Design for a Flexible Spacecraft

Gliding-Guided Projectile Attitude Tracking Controller Design Based on Improved Adaptive Twisting Sliding Mode Algorithm

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