Journal
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
Volume 76, Issue -, Pages 66-74Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.precisioneng.2022.03.004
Keywords
Rotational double-prism; Rotation matrix error-decoupling; Closed-loop tracking; High precision
Categories
Funding
- Youth Innovation Promotion Asso-ciation of the Chinese Academy of Sciences [2019367]
- West Light Foundation of the Chinese Academy of Sciences
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This study proposes a rotation matrix error-decoupling method for correcting tracking errors in a rotational double-prism photoelectric tracking system. The method has been proven to be highly precise and robust in simulation and experimental tracking evaluations.
In a rotational double-prism photoelectric tracking system based on image feedback, the rotation angle of the prisms must be adjusted to correct the tracking error. This study proposes a rotation matrix error-decoupling method that removes the strong coupling between the tracking errors in the x and y directions and the prism rotation in the rotational double-prism tracking device. Based on the tracking error after decoupling, the rotations of the same and reverse directions are simultaneously applied to both prisms to achieve closed-loop tracking. The high precision and robustness of the method were confirmed in simulation and experimental tracking evaluations.
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