| 摘要 |
PURPOSE:To control the number of revolutions and attitude of a spin satellite with the same coil, by flowing a negative or positive pulse current only for the time zone in which a magnetic detecting sensor detects a signal a threshold value or more, to a pair of control coils. CONSTITUTION:A pair or a plurality of pairs of control coils opposed in parallel or with a slope is formed at the inside or outside of a satellite. For example, in case of a pair of coils 2, 3 in parallel, when an earth magnetism F is decomposed into components Fx, Fy orthogonal and inphase to a spin axis 8 and the axis is turned toward the arrow, components fx, fy orthogonal and inphase to the axis 8 of the output of a magnetic sensor 5 are as shown in figure. When pulse currents 9, 10 of the waveforms (C), (D) flow from a control section, two couples of forces 11, 12 and 13, 14 are produced in the coils 2, 3 and the revolution is increased. When the current is reversed, the speed is reduced. Then, when the control coils turn by theta deg. and pulse currents 15, 16 delayed by theta deg. from the pulse currents 9, 10 flow, two couples of forces 17, 18 and 19, 20 are caused and the slope of the rotating shaft is changed. Thus, the revolving speed and attitude can be controlled with the same coil. |
