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Mass Properties Estimation of a Satellite Simulator Based on the Integration Method

Jung-Hyung Lee 1, Hun-Jo Lee 1, Joon-Yong Lee 1, Hwa-Suk Oh 1, Deok-Ki Song 2, and Tae-Seong Song 2, Jeong-Min Kang 2, and Joong-Bo Seo 3
1. Korea Aerospace University, Goyang, 10540, Korea
2. LIGNEX1 Co. Ltd, Pangyo, 13488, Korea
3. Defense Industry Technology Center, Agency for Defense Development, Seoul, 04353, Korea

Abstract—A satellite ground simulator is used to verify the performance of newly developed attitude algorithms, sensors and actuators. An air-bearing platform simulator has recently been developed at Korea Aerospace University. It has a table-top configuration capable of floating a 100kg-class platform. The estimation of the moment of inertia and mass unbalance of the platform is necessary prior to test applications. The noise of a low-grade gyro degrades the estimation performance. To reduce the effects of the gyro noise on the estimation, the integration method with averaging is applied and verified in a computer simulation to adapt the recursive least square method. With a single large 3-dimensional maneuver performed using control moment gyros (CMGs), the inertia and mass-unbalance are identified theoretically within an acceptable accuracy even in the event of CMG singularity. 
Index Terms—estimation, mass properties, satellite simulator, air-bearing, gyroscopes, control moment gyros

Cite: Jung-Hyung Lee, Hun-Jo Lee, Joon-Yong Lee, Hwa-Suk Oh, Deok-Ki Song, Tae-Seong Song, Jeong-Min Kang, Joong-Bo Seo, "Mass Properties Estimation of a Satellite Simulator Based on the Integration Method," International Journal of Mechanical Engineering and Robotics Research, Vol. 8, No. 3, pp. 418-423, May 2019. DOI: 10.18178/ijmerr.8.3.418-423