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中文摘要：
在这份报纸，我们基于 photoelectronic 准直望远镜与一个大范围建议一个转动角度测量方法。根据在测量的柄的旋转位置和圆形的轨道上的点位置之间的相应关系，转动角度用一个简单算法快速并且方便地被计算。仅仅一面镜子， a coupler 和好柄除 photoelectronic 准直望远镜以外在测量系统被包含。瞄准可怕的测量错误由轴导致了摆动的错误，二个测量计划被建议，它为减少轴正在连接好精确柄到测量的柄摆动的错误并且使用片断测量扩大圆形的轨道的半径。试验性的结果证明测量错误旁边被减少
英文摘要：
In this paper,we propose a roll angle measurement method with a large range based on the photoelectronic autocollimator.According to the corresponding relationship between the rotation position of the measured shaft and the spot position on the circular trajectory,the roll angle is calculated quickly and conveniently using a simple algorithm.Only a mirror,a coupler and a fine shaft are contained in the measurement system besides the photoelectronic autocollimator.Aiming at the terrible measurement error induced by the axis wobbly error,two measurement schemes are proposed,which are linking the fine precision shaft to the measured shaft for reducing the axis wobbly error and using the segment measurement to enlarge the radius of the circular trajectory.The experimental results show that the measurement error is decreased by ±0.38°.The roll angle error of the mechanism is ±0.14°,and the measurement precision is about ±2′.The proposed method can be widely used in the engineering fields.
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