{"id":133,"date":"2021-09-02T11:32:28","date_gmt":"2021-09-02T11:32:28","guid":{"rendered":"http:\/\/blog.metu.edu.tr\/esoken\/?page_id=133"},"modified":"2021-09-02T11:37:33","modified_gmt":"2021-09-02T11:37:33","slug":"fault-tolerant-attitude-determination-control-for-small-satellites","status":"publish","type":"page","link":"https:\/\/blog.metu.edu.tr\/esoken\/fault-tolerant-attitude-determination-control-for-small-satellites\/","title":{"rendered":"Fault Tolerant Attitude Determination &amp; Control for Small Satellites"},"content":{"rendered":"\n<p>Small satellites use commercial off-the-shelf sensors and actuators for attitude determination and control (ADC) to reduce the cost. These sensors and actuators are usually not as robust as the available, more expensive, space-proven equipment. As a result, the ADC system of small satellites is more vulnerable to any fault compared to a system for larger competitors.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"679\" src=\"https:\/\/blog.metu.edu.tr\/esoken\/files\/2021\/03\/Yayin_recon-1024x679.jpg\" alt=\"\" class=\"wp-image-134\" srcset=\"https:\/\/blog.metu.edu.tr\/esoken\/files\/2021\/03\/Yayin_recon-1024x679.jpg 1024w, https:\/\/blog.metu.edu.tr\/esoken\/files\/2021\/03\/Yayin_recon-300x199.jpg 300w, https:\/\/blog.metu.edu.tr\/esoken\/files\/2021\/03\/Yayin_recon-768x509.jpg 768w, https:\/\/blog.metu.edu.tr\/esoken\/files\/2021\/03\/Yayin_recon-1536x1019.jpg 1536w, https:\/\/blog.metu.edu.tr\/esoken\/files\/2021\/03\/Yayin_recon-2048x1358.jpg 2048w, https:\/\/blog.metu.edu.tr\/esoken\/files\/2021\/03\/Yayin_recon-264x176.jpg 264w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><sup><span class=\"has-inline-color has-vivid-red-color\">Reconfigurable TRIAD+UKF approach for attitude estimation and complete magnetometer calibration.<\/span><\/sup><\/p>\n\n\n\n<p>This research aims at designing fault tolerant attitude determination and control algorithms for small satellites. Specific problems that are being investigated includes:<\/p>\n\n\n\n<ul class=\"has-normal-font-size wp-block-list\"><li><span class=\"has-inline-color has-black-color\">Adaptive\/robust attitude filtering algorithms <\/span><\/li><li><span class=\"has-inline-color has-black-color\">Real-time sensor calibration methods<\/span><\/li><li><span class=\"has-inline-color has-black-color\">Back-up algorithms for spacecraft attitude estimation &amp; control <\/span><\/li><li><span class=\"has-inline-color has-black-color\">Estimation of spacecraft dynamics parameters, dynamic disturbances and environmental variations<\/span><\/li><li><span class=\"has-inline-color has-black-color\">Reconfigurable algorithms for automony  <\/span><\/li><\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-text-align-center\"><\/p>\n\n\n\n<p><span class=\"has-inline-color has-black-color\">Further reading:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><span class=\"has-inline-color has-black-color\">C. Hajiyev and H.E. Soken, \u201cFault Tolerant Attitude Estimation for Small Satellites,\u201d CRC Press, US, 2020 (<a rel=\"noreferrer noopener\" href=\"https:\/\/www.routledge.com\/Fault-Tolerant-Attitude-Estimation-for-Small-Satellites\/Hajiyev-Soken\/p\/book\/9780815369813\" target=\"_blank\">CRC<\/a> \/ <a rel=\"noreferrer noopener\" href=\"https:\/\/www.amazon.com\/Fault-Tolerant-Attitude-Estimation-Satellites\/dp\/0815369816\" target=\"_blank\">Amazon<\/a>)<\/span><\/li><li><span class=\"has-inline-color has-black-color\">S. N. Sozen, M. Gokce, H.E. Soken, C. Yavuzyilmaz, and F. Gulmammadov, \u201c<a href=\"https:\/\/www.researchgate.net\/publication\/352541465_Measurement_Correction_of_a_Set_of_Analog_Sun_Sensors_via_Neural_Network?_sg=5KlbgDxtjnWgGvOplk8yp9d4qs1YeSzVZCvziiK6v5jLwjHTQixK63VddJdNUHl-0JYwEDNf3iAFh_pzga15Vtf5CJkfB8wShHe9Cy4q.zr79fgGeg0pp6O-tKhPNpbKEzx0Gt89IdOIsaWDZ2YTWYbJhhtDA0aaluXRfPDKN2JbFmpUvVT6di4B0AcpH6g\">Measurement Correction of a Set of Analog Sun Sensors via Neural Network<\/a>,\u201d in Proc. 8th IEEE International Workshop on Metrology for Aerospace, Virtual, 2021.<\/span><\/li><li><span class=\"has-inline-color has-black-color\">H.E. Soken<strong>, <\/strong>M. E. Cetin and S. Sakai, \u201cAttitude-Independent Magnetometer Calibration for Spinning Spacecraft Using Quasi-Measurements,\u201d in Proc. AAS\/AIAA Astrodynamics Specialist Conference, Virtual, 2020, AAS 20-501<\/span><\/li><li><span class=\"has-inline-color has-black-color\">H.E. Soken and S. Sakai, \u201cAttitude estimation and magnetometer calibration using reconfigurable TRIAD+filtering approach\u201d, Aerospace Science and Technology, Vol.99, 2020. DOI: <a rel=\"noreferrer noopener\" href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S1270963819323132\" target=\"_blank\">10.1016\/j.ast.2020.105754<\/a><\/span><\/li><li><span class=\"has-inline-color has-black-color\">H.E. Soken, \u201cA Survey of Calibration Algorithms for Small Satellite Magnetometers\u201d Measurement, vol.122, pp.417-423,2018. DOI: <a rel=\"noreferrer noopener\" href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0263224117306413\" target=\"_blank\">10.1016\/j.measurement.2017.10.017<\/a><\/span><\/li><li><span class=\"has-inline-color has-black-color\">H.E. Soken, \u201c<a href=\"https:\/\/link.springer.com\/article\/10.1007\/s42405-018-0020-8\">An Attitude Filtering and Magnetometer Calibration Approach for Nanosatellites<\/a>\u201d International Journal of Aeronautical and Space Sciences, vol.19, no.1, pp.164-171, 2018 .DOI: <a rel=\"noreferrer noopener\" href=\"http:\/\/10.1007\/s42405-018-0020-8\" target=\"_blank\">10.1007\/s42405-018-0020-8<\/a><\/span><\/li><li><span class=\"has-inline-color has-black-color\">H.E. Soken, S. Sakai and R. Wisniewski, \u201cIn-Orbit Estimation of Time-Varying Residual Magnetic Moment,\u201d IEEE Transactions on Aerospace and Electronic Systems, vol. 50, no.4, pp. 3126-3136, 2014, DOI: <a rel=\"noreferrer noopener\" href=\"https:\/\/ieeexplore.ieee.org\/document\/6978903\" target=\"_blank\">10.1109\/TAES.2014.130225<\/a><\/span><\/li><li><span class=\"has-inline-color has-black-color\">H.E. Soken and C. Hajiyev, \u201cPico Satellite Attitude Estimation via Robust Unscented Kalman Filter in the Presence of Measurement Faults,\u201d ISA Transactions, vol.49, no. 3, pp. 249-256, 2010.&nbsp;&nbsp;&nbsp;DOI: <a rel=\"noreferrer noopener\" href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0019057810000339\" target=\"_blank\">10.1016\/j.isatra.2010.04.001<\/a><\/span><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Small satellites use commercial off-the-shelf sensors and actuators for attitude determination and control (ADC) to reduce the cost. These sensors and actuators are usually not as robust as the available, more expensive, space-proven equipment. As a result, the ADC system of small satellites is more vulnerable to any fault compared to a system for larger<\/p>\n<div class=\"readmore\"><a class=\"btn slider-btn1\" href=\"https:\/\/blog.metu.edu.tr\/esoken\/fault-tolerant-attitude-determination-control-for-small-satellites\/\">Read More&#8230;<\/a><\/div>\n","protected":false},"author":7106,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-133","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blog.metu.edu.tr\/esoken\/wp-json\/wp\/v2\/pages\/133","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.metu.edu.tr\/esoken\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blog.metu.edu.tr\/esoken\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/esoken\/wp-json\/wp\/v2\/users\/7106"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/esoken\/wp-json\/wp\/v2\/comments?post=133"}],"version-history":[{"count":0,"href":"https:\/\/blog.metu.edu.tr\/esoken\/wp-json\/wp\/v2\/pages\/133\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.metu.edu.tr\/esoken\/wp-json\/wp\/v2\/media?parent=133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}