Authors
Abstract
In this paper the performance of a three Degrees Of Freedom simulator is evaluated. This platform is considered as an important instrument generally used in performance tests of spacecraft attitude determination and control subsystem on the ground. A hemispherical air bearing is used to provide micro gravity condition. Reaction wheels produce required control torques and an integrated sensor is used for attitude determination. Commanding and visualization of the platform in monitoring station are provided by a wireless LAN. PD, QEF and LQR controllers are designed and implemented for slew maneuver to show the ability of the simulator. The desired attitude accuracy is obtained using these controllers. The test results verify the designed controllers and show the ability and functionality of the system, as a simulator for evaluating attitude controllers.
Keywords
- Schwartz, J. , Peck, M. A. and Hall, C. D., “Historical Review of Air-Bearing Spacecraft Simulators,” Journal of Guidance, Control, and Dynamics, Vol. 26, No. 4, 2003, pp. 513-522.
- Kim, B. , Velenis, E., Kriengsiri, P., and Tsiotras, P., “Designing a Low Cost Spacecraft Simulator,” IEEE Control Systems Magazine, Vol. 23, Issue 4, 2003, pp. 26-37.
- Jung, D., and Tsiotras, P., “A 3-DoF Experimental Test-Bed for Integrated Attitude Dynamics and Control Research,” AIAA Guidance, Navigation, and Control Conference and Exhibit, AAS Astrodynamics Specialist Conference, Austin, Texas, 2003.
- Justin, S., McFarland, M., Shoemaker, A. and Eide, J., “Characterization of Cold-Gas Thrusters for Use on Spacecraft Simulators,” AIAA Mid-Atlantic (Region I-MA) Student Conference, Blacksburg, Virginia, 2004.
- Romano, M. and Agrawal, B. N., “Attitude Dynamics and Control of a Dual-Body Spacecraft with Variable-Speed Control Moment Gyros,” Journal of Guidance, Control, and Dynamics, 27, No. 4, 2004, pp. 513-525.
- Prado, J. and Bisiacchi, G., Reyes, L., Vicente, E., Contreras, F., Mesinas, M. and Juárez, A., “Three Axis Airbearing Based Platform for Small Satellite Attitude Determination and Control Simulation,” Journal of Applied Research and Technology (JART), Vol. 3, No.3, 2005, pp. 222-237.
- French, D. B., “Hybrid Control Strategies for Rapid, Large Angle Satellite Slew Maneuvers,” (M. Sc. Thesis), Air University, Air Institute of Technology, Ohio, 2003.
- Tavakoli, A. H., Abedian, A. and Dehghan, M., “Designing and Manufacturing of Hemispherical Airbearing”, Mechanical Engineering Magazine, No. 61, 2008 (In Persian).
- Available: [on line], http://www.nelsonair.com.
- Tavakoli, A. H., Abedian, A. and Dehghan, M., Designing and Manufacturing of Mechanical Parts of an Attitude Control Simulator, Technical Report, SRI/G2-R-1387-030238, Aerospace University Complex, 2008 (In Persian).
- Larson, W. and Wertz, J., Space Mission Analysis & Design, CRC Press, 1992.
- Jelinsky, P., SNAP Reaction Wheel Size, Report at 12/20/2004.
- Adiprawita, W., Ahmad, A. S. and Sembiring, J., “Development of AHRS (Attitude and Heading Reference System) for Autonomous UAV (Unmanned Aerial Vehicle),” Proceedings of the International Conference on Electrical Engineering and Informatics, Institut Teknologi Bandung, Indonesia, 2007.
- Kalhor, A., and Dehghan, M., Designing and Manufacturing of Electrical Parts of an Attitude Control Simulator, Technical Report, Aerospace University Complex, SRI/G2-R-1387--060246, 2008 (In Persian).
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