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http://dx.doi.org/10.7736/KSPE.2016.33.10.789

Study on Gravitational Torque Estimation and Compensation in Electrically Driven Satellite Antenna System  

Kim, Gwang Tae (Agency for Defense Development)
Publication Information
Journal of the Korean Society for Precision Engineering / v.33, no.10, 2016 , pp. 789-796 More about this Journal
Abstract
The weight of an antenna system pointing satellite on the mobile platform is restricted by the weight limit of the mobile platform. The maximum power of the actuator driving the antenna system is thus limited because a high power actuator needs a heavier weight. Thus, a drive system is designed to have a low torque requirement by reducing the gravitational torque depending on gravity or acceleration of the mobile platform, including vibration, shock, and accelerated motion. To reduce the gravitational torque, the mathematical model of the gravitational torque is preferentially obtained. However, the method to directly estimate the mathematical model in an antenna system has not previously been reported. In this paper, a method is proposed to estimate the gravitational torque as a mathematical model in the antenna system. Additionally, a method is also proposed to calculate the optimal weight of the balancing weight to compensate for the gravitational torque.
Keywords
Center of gravity measurement; Balancing weight; Light weight; Robot manipulator; Inertially stabilized platform;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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