Dynamic closed loop attitude control simulation and verification environment for micro-satellites

Kazufumi Fukuda, Toshinori Kuwahara, Yoshihiro Tomioka, Yuji Sakamoto, Kazuya Yoshida

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)


Tohoku University has been developing multiple micro-satellites for years. The most recent 50-kg class micro-satellite "RISESAT" is equipped with a high-resolution multi-spectral Cassegrain telescope with 5m GSD, as well as an optical communication terminal named "VSOTA." VSOTA requires high-performance attitude control of less than 0.04 deg angle error to keep communication link with the optical ground station because the transmitting laser direction is fixed on the satellite body. Although main methods of testing attitude control system (ACS) before launch are mathematical simulation or static closed loop tests, it is difficult to reproduce sensor noises and actuator errors in mathematical models perfectly. Furthermore, the more severe the attitude determination and control requirements are, the more important it is that the assembled ACS is tested in motion before the launch. Due to these reasons, Tohoku University has started development of a dynamic closed loop test environment. This environment is based on a low friction 3-axis motion table using spherical air bearing. Each sensor and actuator, as well as the total performance of the ACS of RISESAT will be evaluated using this environment. This test environment is designed to be able to evaluate attitude control accuracy of down to 0.04 deg. The table size is 1.2 × 1.0 × 1.0 m including air bearing stand. In this paper, the details of designed specification and the results of system integration of this dynamic closed loop simulation environment will be described.

Original languageEnglish
Title of host publication64th International Astronautical Congress 2013, IAC 2013
PublisherInternational Astronautical Federation, IAF
Number of pages7
ISBN (Print)9781629939094
Publication statusPublished - 2013
Event64th International Astronautical Congress 2013, IAC 2013 - Beijing, China
Duration: 2013 Sept 232013 Sept 27

Publication series

NameProceedings of the International Astronautical Congress, IAC
ISSN (Print)0074-1795


Conference64th International Astronautical Congress 2013, IAC 2013


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