A study of coupled magnetic fields for an optimum torque generation
Magnetic torquers are specifically designed to generate a magnetic field onboard the satellites for their attitude control. A control torque is generated when the magnetic fields generated by the magnetic torquers couple with the geomagnetic fields, whereby the vector of the generated torque is...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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International Society of Multiphysics
2012
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| Subjects: | |
| Online Access: | http://eprints.usm.my/36759/ http://eprints.usm.my/36759/1/%28A_study_of_coupled_magnetic%29_195-462-1-SM.pdf |
| _version_ | 1848878002039947264 |
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| author | Mohd Suhadis, Nurulasikin Varatharajoo, Renuganth |
| author_facet | Mohd Suhadis, Nurulasikin Varatharajoo, Renuganth |
| author_sort | Mohd Suhadis, Nurulasikin |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Magnetic torquers are specifically designed to generate a magnetic field
onboard the satellites for their attitude control. A control torque is generated
when the magnetic fields generated by the magnetic torquers couple with
the geomagnetic fields, whereby the vector of the generated torque is
perpendicular to both the magnetic fields. In this paper, two control algorithms
for a momentum bias satellite implementing two and three magnetic torquers
onboard have been developed. The structured algorithms are for an
optimum torque generation and eventually controlling the satellite attitudes
(roll/yaw) and nutation using a proportional (P) controller as well as managing
the excess angular momentum via a proportional-integral (PI) controller. The
developed control algorithms were tested using the complex and simplified
geomagnetic field models for a LEO satellite mission in a nominal attitude
operation. Their attitude torque generation performances were compared
and it is found that the optimum torques can be generated by both the
developed control algorithms. However, the system with three magnetic
torquers provides a better torque generation compartment and
consequently gives a better attitude performance up to 0.5 deg. |
| first_indexed | 2025-11-15T17:24:24Z |
| format | Article |
| id | usm-36759 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T17:24:24Z |
| publishDate | 2012 |
| publisher | International Society of Multiphysics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-367592017-09-26T00:39:53Z http://eprints.usm.my/36759/ A study of coupled magnetic fields for an optimum torque generation Mohd Suhadis, Nurulasikin Varatharajoo, Renuganth TL1-4050 Motor vehicles. Aeronautics. Astronautics Magnetic torquers are specifically designed to generate a magnetic field onboard the satellites for their attitude control. A control torque is generated when the magnetic fields generated by the magnetic torquers couple with the geomagnetic fields, whereby the vector of the generated torque is perpendicular to both the magnetic fields. In this paper, two control algorithms for a momentum bias satellite implementing two and three magnetic torquers onboard have been developed. The structured algorithms are for an optimum torque generation and eventually controlling the satellite attitudes (roll/yaw) and nutation using a proportional (P) controller as well as managing the excess angular momentum via a proportional-integral (PI) controller. The developed control algorithms were tested using the complex and simplified geomagnetic field models for a LEO satellite mission in a nominal attitude operation. Their attitude torque generation performances were compared and it is found that the optimum torques can be generated by both the developed control algorithms. However, the system with three magnetic torquers provides a better torque generation compartment and consequently gives a better attitude performance up to 0.5 deg. International Society of Multiphysics 2012 Article PeerReviewed application/pdf en http://eprints.usm.my/36759/1/%28A_study_of_coupled_magnetic%29_195-462-1-SM.pdf Mohd Suhadis, Nurulasikin and Varatharajoo, Renuganth (2012) A study of coupled magnetic fields for an optimum torque generation. International Journal of Multiphysics, 6 (1). pp. 73-88. ISSN 1750-9548 http://journal.multiphysics.org/index.php/IJM/article/view/195 |
| spellingShingle | TL1-4050 Motor vehicles. Aeronautics. Astronautics Mohd Suhadis, Nurulasikin Varatharajoo, Renuganth A study of coupled magnetic fields for an optimum torque generation |
| title | A study of coupled magnetic fields for an optimum
torque generation |
| title_full | A study of coupled magnetic fields for an optimum
torque generation |
| title_fullStr | A study of coupled magnetic fields for an optimum
torque generation |
| title_full_unstemmed | A study of coupled magnetic fields for an optimum
torque generation |
| title_short | A study of coupled magnetic fields for an optimum
torque generation |
| title_sort | study of coupled magnetic fields for an optimum
torque generation |
| topic | TL1-4050 Motor vehicles. Aeronautics. Astronautics |
| url | http://eprints.usm.my/36759/ http://eprints.usm.my/36759/ http://eprints.usm.my/36759/1/%28A_study_of_coupled_magnetic%29_195-462-1-SM.pdf |