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公开(公告)号：US09751644B2
公开(公告)日：2017-09-05
申请号：US14414852
申请日：2013-07-24
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Dae-Kwan Kim , Hyungjoo Yoon , Wooyong Kang , Yong Bok Kim , Hong-Taek Choi
IPC: H02K5/173 , B64G1/28 , B64G1/24 , G05D1/08 , H02K16/04 , H02K41/025 , H02K7/08 , H02K17/16 , B64G1/32
CPC classification number: B64G1/285 , B64G1/24 , B64G1/32 , G05D1/0808 , H02K5/173 , H02K5/1737 , H02K7/088 , H02K16/04 , H02K17/16 , H02K41/025 , H02K2201/18
Abstract: Provided is a three-dimensional rigid ball driving system including: a support frame having a polyhedral shape; a rigid ball positioned at the center of an inner portion of the support frame; a plurality of ball bearings installed at corners of inner sides of the support frame, respectively, and contacting a surface of the rigid ball; and a plurality of electromagnets disposed around the ball bearings and generating magnetic fields to rotate the rigid ball; and a controller controlling the electromagnets to control a rotation direction and a rotation speed of the rigid ball.
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公开(公告)号：US20150168440A1
公开(公告)日：2015-06-18
申请号：US14405679
申请日：2012-12-07
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Wooyong Kang , Dae-Kwan Kim , Yong Bok Kim , Hyungjoo Yoon , Hong-Taek Choi
Abstract: The present invention relates to a method of measuring the rotating speed of a sphere for controlling the posture of a satellite. The method includes: an accelerometer installing operation in which a pair of accelerometers is installed at each accelerometer coordinate axis, the accelerometers being located in the sphere; an accelerometer coordinate axis alignment operation in which the accelerometer coordinate axes are aligned to allow the accelerometer coordinate axes to be in line with system coordinate axes, respectively; an acceleration measuring operation in which a current is applied to an electromagnet to rotate the sphere and sequentially measure the acceleration; an acceleration calculating operation in which only the acceleration generated by the rotation of the sphere is calculated; and a rotating speed calculating operation in which the rotating speed of the sphere with respect to each coordinate axis is calculated using the acceleration.
Abstract translation: 本发明涉及测量用于控制卫星姿态的球体转速的方法。 该方法包括：加速度计安装操作，其中一对加速度计安装在每个加速度计坐标轴处，加速度计位于球体中; 加速度计坐标轴对准操作，其中加速度计坐标轴对准以分别使加速度计坐标轴与系统坐标轴相符; 加速度测量操作，其中电流施加到电磁体以旋转球体并且顺序地测量加速度; 其中仅计算由球体的旋转产生的加速度的加速度计算操作; 以及旋转速度计算操作，其中使用加速度来计算球体相对于每个坐标轴的旋转速度。
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公开(公告)号：US20150166200A1
公开(公告)日：2015-06-18
申请号：US14414852
申请日：2013-07-24
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Dae-Kwan Kim , Hyungjoo Yoon , Wooyong Kang , Yong Bok Kim , Hong-Taek Choi
CPC classification number: B64G1/285 , B64G1/24 , B64G1/32 , G05D1/0808 , H02K5/173 , H02K5/1737 , H02K7/088 , H02K16/04 , H02K17/16 , H02K41/025 , H02K2201/18
Abstract: Provided is a three-dimensional rigid ball driving system including: a support frame having a polyhedral shape; a rigid ball positioned at the center of an inner portion of the support frame; a plurality of ball bearings installed at corners of inner sides of the support frame, respectively, and contacting a surface of the rigid ball; and a plurality of electromagnets disposed around the ball bearings and generating magnetic fields to rotate the rigid ball; and a controller controlling the electromagnets to control a rotation direction and a rotation speed of the rigid ball.
Abstract translation: 本发明提供一种三维刚性球驱动系统，包括：具有多面体形状的支撑框架; 位于所述支撑框架的内部的中心的刚性球; 多个球轴承分别安装在支撑架的内侧的拐角处，并接触刚性球的表面; 以及设置在所述球轴承周围并产生磁场以使所述刚性球旋转的多个电磁体; 以及控制电磁体以控制刚性球的旋转方向和旋转速度的控制器。
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