22 July 2016 Research of subdivision driving technology for brushless DC motors in optical fiber positioning
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Abstract
In fiber spectroscopic telescopes, optical fiber positioning units are used to position thousands of fibers on the focal plane quickly and precisely. Stepper motors are used in existing units, however, it has some inherent deficiencies, such as serious heating and low efficiency. In this work, the universally adopted subdivision driving technology for stepper motors is transplanted to brushless DC motors. It keeps the advantages of stepper motors such as high positioning accuracy and resolution, while overcomes the disadvantages mentioned above. Thus, this research mainly focuses on develop a novel subdivision driving technology for brushless DC motor. By the proving of experiments of online debug and subdivision speed and position, the proposed brushless DC motor subdivision technology can achieve the expected functions.
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Yi Kan, Yonggang Gu, Ye Zhu, Chao Zhai, "Research of subdivision driving technology for brushless DC motors in optical fiber positioning", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99125A (22 July 2016); doi: 10.1117/12.2232204; https://doi.org/10.1117/12.2232204
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