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Satellite swirl stabilization method, in which a transverse moment of inertia with a single degree of freedom is stored, and system therefor
Satellite swirl stabilization method, in which a transverse moment of inertia with a single degree of freedom is stored, and system therefor
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机译:卫星涡旋稳定方法及其系统,在该方法中,存储了具有单一自由度的横向惯性矩
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摘要
Methods and systems for stabilizing satellite spin about an intermediate inertia axis (Z) are disclosed. A set of gyros (22) sense the X component and the Y component of the angular velocity of the satellite body. A single degree of freedom momentum wheel (26) has a fixed transverse orientation with respect to the intermediate axis in order to store momentum. In one embodiment, the momentum wheel (26) is oriented to store momentum parallel to the Y axis. A tachometer (30) senses the rotation rate of the momentum wheel (26). A processor (24) forms a control signal representative of a control torque to be applied to the momentum wheel (26). The control torque is based upon the X component and the Y component of angular velocity of the satellite (20), and the angular velocity of the momentum wheel (26). These methods and systems may also be used to invert the spin direction of spinning satellites (20), ensure tumble recover to a preferred orientation, and stabilize the body spin axis against mutation, dynamic imbalance and external torques. IMAGE
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