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Development of angular velocity vector measurement of a spherical rotor based on color sensors

机译:基于彩色传感器的球形转子角速度矢量测量的发展

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摘要

Spherical actuators have many applications in satellite attitude control. It is very important for closed-loop control to measure the angular velocity vector of the spherical rotor accurately and quickly. This paper proposes one non-contact method for measuring angular velocity vector of a spherical rotor, using four color sensors. The spherical rotor surface should be color-coded with red, blue, green, magenta, yellow, cyan, black and white, while each color covers an octant in sequence. Four color sensors are mounted about the vertexes of a tetrahedron, used to sense the color of the spherical surface and transform them into angular velocity vector. Simulations approve the correctness of this method, within a module error of approximately 5.2 rpm and a direction error of 0.88 degree within 4000 rpm. Experiments verify that the random error is smaller than 2.7 rpm and direction error smaller than 1.1 degree within 2000 rpm.
机译:球形执行器在卫星姿态控制中具有许多应用。 闭环控制非常重要,以准确且快速地测量球形转子的角速度向量。 本文提出了一种使用四种颜色传感器测量球形转子角速度向量的一种非接触方法。 球形转子表面应用红色,蓝色,绿色,绿色,洋红色,黄色,青色,黑色和白色彩色编码,而每种颜色均依次覆盖八个章程。 围绕四面体的顶点安装了四种颜色传感器,用于感测球面表面的颜色并将其转换为角速度向量。 仿真批准了这种方法的正确性,在大约5.2 rpm的模块误差内,在4000rpm内的0.88度的方向误差内。 实验验证了随机误差小于2.7 rpm,方向误差小于2000 rpm内的1.1度。

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