Rotary coding disc and method for designing the same
This technology optimizes optical rotary encoder code disks by selecting suitable De Bruijn sequences instead of conventional M-Code. It suppresses photocurrent blooming noise and improves readout stability without software or hardware changes. Implemented in an in-house 25-bit AC servo motor encoder, it reduced the bit error rate from 262.76 ppm to 0.82 ppm, over 300 times lower. It received the Platinum Award at the 2024 Taiwan Innotech Expo.
Industrial Applications:
This technology can be applied to optical rotary encoders using absolute encoding, especially for compact, high-resolution positioning systems. It supports applications in smart machinery, robotics, semiconductor equipment, green energy, biomedical systems, smart agriculture, and defense industries. By improving motor positioning, speed control, and automation stability, it helps reduce control risks caused by decoding errors.
National Yang Ming Chiao Tung University
National Yang Ming Chiao Tung University (NYCU) was established on February 1, 2021, through the merger of National Chiao Tung University and National Yang Ming University. By integrating Chiao Tung’s strengths in information, communications, and engineering technologies with Yang Ming’s expertise in biomedical research, NYCU is committed to transcending disciplinary boundaries. The university advances interdisciplinary fields such as digital medicine, bioinformatics, smart technologies, and biomedical applications, while cultivating innovative, globally competitive talent and addressing complex real-world challenges.
Contact Information
Name：Mang Ou-Yang
Tel：03-571-2121#54343
Address：No. 75, Boai Street, Hsinchu 300, Taiwan, ROC
Additional Information
Pavilion：Innovation Economy Pavilion Smart Manufacturing IB11
Exhibiting Entity：Taiwan Intellectual Property Office
Application Category：Electronics and Optoelectronics
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Pavilion：Innovation Economy Pavilion Smart Manufacturing IB11
Exhibiting Entity：Taiwan Intellectual Property Office
Application Category：Electronics and Optoelectronics
Patents：
I722886
Related Links：
Official Website
