Visual encoder: robust and precise measurement method of rotation angle via high-speed RGB vision.
Visual encoder: robust and precise measurement method of rotation angle via high-speed RGB vision.
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DOI：
10.1364/oe.24.013375
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发表时间：
2016-06
期刊：
影响因子：
3.8
通讯作者：
Hyuno Kim;Y. Yamakawa;T. Senoo;M. Ishikawa
中科院分区：
文献类型：
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作者：
Hyuno Kim;Y. Yamakawa;T. Senoo;M. Ishikawa
本文提出了一种新的转子旋转角度测量方法，称为“视觉编码器”。该方法基于视觉方法和光学编码器的原理，并通过使用高速视觉系统来实现。视觉编码器具有非接触式、高分辨率、对自由运动和旋转轴波动的鲁棒性等优点。还提出了一种提高测量分辨率的高分辨率方法。通过实验验证证实了视觉编码器的准确性和鲁棒性，即使在旋转轴波动的情况下也可以在6000rpm下运行。
In this paper, a new measurement method of the rotation angle of a rotor, which is named the 'visual encoder,' was proposed. This method is based on the principles of the vision-based method and the optical encoder, and realized by using a high-speed vision system. The visual encoder shows advantageous features such as non-contact, high-resolution and robustness against the free motion and the fluctuation of the rotation axis. A high resolution method to increase the measurement resolution was also suggested. The accuracy and the robustness of the visual encoder were confirmed through the experimental verifications, and the operation was possible at 6,000 rpm even under the fluctuation of rotation axis.