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首页> 外文期刊>Journal of the Chinese Society of Mechanical Engineers, Series C: Transactions of the Chinese Society of Mechanical Engineers >Analysis of Roll-Yaw Control Law Applied to the Initial Attitude Acquisition of Spacecraft with Single Pitch Wheel
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Analysis of Roll-Yaw Control Law Applied to the Initial Attitude Acquisition of Spacecraft with Single Pitch Wheel

机译：单桨轮航天器初始姿态获取中的横摆控制律分析

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摘要

A sequence of control procedures is analyzed in this paper that can be applied to the initial attitude maneuver of pitch momentum biased three-axis stabilized spacecraft. B-dot control is activated first to detumble the spacecraft, and then is followed by pitch axis control to start up the pitch momentum wheel and eliminate pitch angle deviation. For the convenience of using previous control results, a simple but effective roll control law is formulated following 1-3-2 Euler angle sequence which uses roll angle and roll angle rate for feedback. The same approach can be done for yaw control law which is for 3-1-2 sequence that measures yaw angle and yaw angle rate to close the feedback control loop. The strategy for roll control law, taking the advantage of pitch angular momentum stiffness and pitch rotation, is to orient the roll angle and at the same time eliminates the yaw angle error or vice versa as roll and yaw angles are coupled and exchanged every one-quarter of the orbit. Also, the magnetic dipole generated by the control law is proportional to B_x for roll control and B_z for yaw control, which are the intensity components of geomagnetic field measured on the spacecraft, and synchronize with roll-yaw libration cycle. Studies also indicate that, for magnetic torque application, orbit with higher inclination angle has better control ability.
机译：本文分析了一系列控制程序，可将其应用于俯仰动量偏置三轴稳定航天器的初始姿态操纵。首先激活B点控制以使航天器脱壳，然后再进行俯仰轴控制以启动俯仰动量轮并消除俯仰角偏差。为了方便使用先前的控制结果，遵循1-3-2欧拉角序列（使用侧倾角和侧倾角速率进行反馈）来制定简单但有效的侧倾控制定律。对于偏航控制定律可以采用相同的方法，该方法适用于3-1-2序列，该序列测量偏航角和偏航角速率以闭合反馈控制回路。利用俯仰角动量刚度和俯仰旋转的优势，侧倾控制定律的策略是定向侧倾角，同时消除了偏航角误差，反之亦然，因为侧倾角和偏航角相互耦合和交换，轨道的四分之一。同样，由控制定律产生的磁偶极子与用于侧倾控制的B_x和用于偏航控制的B_z成比例，B_z是在航天器上测量的地磁场的强度分量，并且与侧倾释放周期同步。研究还表明，对于磁转矩应用，具有较大倾角的轨道具有更好的控制能力。

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