A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking
A spacecraft combined attitude and sun tracking system (CASTS) is a synergized system in which solar array drive assemblies are used as sun trackers and simultaneously as attitude control actuators. This paper, a continuous research on CASTS, addresses its attitude control problem. The kinematics an...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Science Publishing Corporation
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/72944/1/FUZZY.pdf |
| _version_ | 1825950160876732416 |
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| author | Varatharajoo, Renuganth Chak, Yew Chung |
| author_facet | Varatharajoo, Renuganth Chak, Yew Chung |
| author_sort | Varatharajoo, Renuganth |
| collection | UPM |
| description | A spacecraft combined attitude and sun tracking system (CASTS) is a synergized system in which solar array drive assemblies are used as sun trackers and simultaneously as attitude control actuators. This paper, a continuous research on CASTS, addresses its attitude control problem. The kinematics and dynamics equations of a rigid spacecraft attitude motion is inherently nonlinear. In the attitude regulation problem, the attitude motion can be treated as a simple linear system for a constrained range of operating conditions, but it has impacts on the accuracy of the linear model when a model-based controller is implemented. Naturally, this is a compromise between simplicity and accuracy that all design engineers have to face. In this paper, we present a systematic approach to improve the accuracy while preserving the model as linear as possible, by deriving a quasi-linear approximation of a nonlinear spacecraft attitude motion. The quasi-linear approximation is based on the framework of the Takagi–Sugeno (T–S) fuzzy model. If a spacecraft can be modeled in the form of a rule-based T-S fuzzy system that acts as an interpolator between linear state-space systems, an approach called parallel distributed control (PDC) can be used to stabilize the attitude motion. The design philosophy of PDC is to create a simple fuzzy controller,where each rule’s consequent is a control law designed to stabilize the linear system in the corresponding consequent of the spacecraft T-S fuzzy system. Numerical results validate that the attitude and sun-tracking performances are achievable using the proposed PDC strategy. |
| first_indexed | 2024-03-06T10:10:22Z |
| format | Article |
| id | upm.eprints-72944 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:10:22Z |
| publishDate | 2018 |
| publisher | Science Publishing Corporation |
| record_format | dspace |
| spelling | upm.eprints-729442020-11-27T20:09:40Z http://psasir.upm.edu.my/id/eprint/72944/ A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking Varatharajoo, Renuganth Chak, Yew Chung A spacecraft combined attitude and sun tracking system (CASTS) is a synergized system in which solar array drive assemblies are used as sun trackers and simultaneously as attitude control actuators. This paper, a continuous research on CASTS, addresses its attitude control problem. The kinematics and dynamics equations of a rigid spacecraft attitude motion is inherently nonlinear. In the attitude regulation problem, the attitude motion can be treated as a simple linear system for a constrained range of operating conditions, but it has impacts on the accuracy of the linear model when a model-based controller is implemented. Naturally, this is a compromise between simplicity and accuracy that all design engineers have to face. In this paper, we present a systematic approach to improve the accuracy while preserving the model as linear as possible, by deriving a quasi-linear approximation of a nonlinear spacecraft attitude motion. The quasi-linear approximation is based on the framework of the Takagi–Sugeno (T–S) fuzzy model. If a spacecraft can be modeled in the form of a rule-based T-S fuzzy system that acts as an interpolator between linear state-space systems, an approach called parallel distributed control (PDC) can be used to stabilize the attitude motion. The design philosophy of PDC is to create a simple fuzzy controller,where each rule’s consequent is a control law designed to stabilize the linear system in the corresponding consequent of the spacecraft T-S fuzzy system. Numerical results validate that the attitude and sun-tracking performances are achievable using the proposed PDC strategy. Science Publishing Corporation 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72944/1/FUZZY.pdf Varatharajoo, Renuganth and Chak, Yew Chung (2018) A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking. International Journal of Engineering and Technology (UAE), 7 (4.13). 28 - 32. ISSN 2227-524X https://www.sciencepubco.com/index.php/ijet/article/view/21324/10086 |
| spellingShingle | Varatharajoo, Renuganth Chak, Yew Chung A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking |
| title | A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking |
| title_full | A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking |
| title_fullStr | A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking |
| title_full_unstemmed | A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking |
| title_short | A parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking |
| title_sort | parallel distributed compensation approach to fuzzy control of spacecraft combined attitude and sun tracking |
| url | http://psasir.upm.edu.my/id/eprint/72944/1/FUZZY.pdf |
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