Reaction sphere for satellite altitude control

 Project in collaboration with CSEM

Project description

A reaction sphere is proposed as a potential alternative to traditional Attitude and Orbit Control System (AOCS) actuators based on reaction wheels or control moment gyroscopes. The reaction sphere is a magnetic-bearing spherical actuator consisting of an 8-pole permanent-magnet spherical rotor that can be accelerated about any axis by a 20-pole stator with air-core electromagnets. A research prototype equipped with dedicated power electronics is manufactured to validate force and torque analytical models.

 

Publications

B. Borque Gallego; L. Rossini; T. Achtnich; C. Zwyssig; R. Seiler et al. : Micro-vibration identification in active magnetic bearing systems. 2019. The 18th European Space Mechanisms and Tribology Symposium (ESMATS 2019), Munich, Germany, September 18-20, 2019.
G. Borque Gallego; L. Rossini; T. Achtnich; C. Zwyssig; D. Martins Araujo et al. : Force and Torque Comparison of Ironless Passive Magnetic Bearing Structures. 2019. The 2019 IEEE International Electric Machines & Drives Conference (IEMDC 2019), San Diego, CA, USA, May 12-15, 2019.
G. Borque Gallego; L. Rossini; T. Achtnich; C. Zwyssig; D. Martins Araujo et al. : Force Analysis of a Slotless Lorentz-Type Active Magnetic Bearing Actuator. 2018. The 2018 International Conference on Electrical Machines and Systems (ICEMS2018), Jeju, South Korea, October 7-10, 2018.
L. Rossini; E. Onillon; O. Chetelat; Y. Perriard : Closed-loop magnetic bearing and angular velocity control of a reaction sphere actuator; Mechatronics. 2015. DOI : 10.1016/j.mechatronics.2015.07.003.
L. Rossini; E. Onillon; O. Chételat; Y. Perriard : Back-EMF and Rotor Angular Velocity Estimation for a Reaction Sphere Actuator. 2014. AIM 2014, IEEE/ASME International Conference on Advanced Intelligent Mechatronics, Besançon, France, July 8-11, 2014.
L. Rossini; S. Mingard; A. Boletis; E. Forzani; E. Onillon et al. : Rotor Design Optimization for a Reaction Sphere Actuator; IEEE Transactions on Industry Applications. 2014. DOI : 10.1109/Tia.2013.2282660.
L. Rossini / Y. Perriard (Dir.) : Electromagnetic Modeling and Control Aspects of a Reaction Sphere for Satellite Attitude Control. Lausanne, EPFL, 2014. DOI : 10.5075/epfl-thesis-6311.
L. Rossini; E. Onillon; O. Chetelat; Y. Perriard : Hybrid FEM-analytical force and torque models of a reaction sphere actuator. 2013. 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013, Chicago, IL, United States, May 12 - 15, 2013. p. 694-700.
L. Rossini; O. Chetelat; E. Onillon; Y. Perriard : Force and Torque Analytical Models of a Reaction Sphere Actuator Based on Spherical Harmonic Rotation and Decomposition; IEEE/ASME Transactions on Mechatronics 1. 2013. DOI : 10.1109/Tmech.2012.2195501.
L. Rossini; S. Mingard; A. Boletis; E. Forzani; E. Onillon et al. : Rotor Design Optimization for a Reaction Sphere Actuator. 2012. ICEMS, Sapporo.
L. Rossini; E. Onillon; O. Chetelat; Y. Perriard : An Optimal Sensor Placement Strategy for Force and Torque Analytical Models of a Reaction Sphere Actuator for Satellite Attitude Control. 2012. ICEM, Marseille.
L. Rossini; E. Onillon; O. Chetelat; Y. Perriard : An open-loop control strategy of a reaction sphere for satellite attitude control. 2011. International Conference on Electrical Machines and Systems (ICEMS), Beijing, China, 2011.
L. Rossini; O. Chetelat; E. Onillon; Y. Perriard : Analytical and experimental investigation on the force and torque of a reaction sphere for satellite attitude control. 2011. IEEE/ASME International Conference on Advanced Intelligent Mechatronics 2011, Budapest, Hungary, 2011.