[1] [1] CHEN Yun, ZHAO Xing-guo. Research single-ring absolute photoelectric shaft encoder［J］. Acta Photonica Sinica, 2008, 37(2): 230-233.

[2] [2] WANG Ying-nan, YUAN Bo, NI Xu-xiang. Subdivision technique of absolute angular encoder using array detector［J］. Journal of Zhejiang University (Engineering Science), 2011, 45(2): 370-374.

[3] [3] CHEN Yun, ZHANG Hong-sheng. Coding modes of photoelectric shaft encoders and their developing trend［J］. Chinese Journal of Optics and Applied Optics, 2009, 2(2): 126-133.

[4] [4] XIONG Wen-zhuo, YAN Long-jun, CHU Guang-sheng, et al. Research of metal single-track absolute rotary encoder［J］. China Journal of Scientific Instrument, 2009, 30(10): 318-321.

[5] [5] ZHAO Zhi-wei, CHEN Yun. A new type of absolute shaft photoelectric encoder based on metal code disc［J］. Chinese Journal of Sensors and Actuators, 2010, 23(5): 656-659.

[6] [6] QIU Cheng, ZHU Heng-jun. Absolute optical encoder with single code detector based on the serial encoding method［J］. Optical Technique, 2007, 33(2): 262-265.

[7] [7] SUGIYAMA Y, MATSUI Y, TOYODA H, et al. A 3.2 kHz, 14-bit optical absolute rotary encoder with a cmos profile sensor［J］. IEEE Sensors Journal, 2008, 8(8): 1430-1436.

[8] [8] CHEN Xing-lin, LIU Yang, L Heng-yi. Research on new decode method of photoelectrical encoder［J］. Transducer and Microsystem Technologies, 2010, 29(2): 19-21.

[9] [9] SUN Ying, WAN Qiu-hua, WANG Shu-jie, et al. Design of signal process system for spaceborne photoelectric encoder［J］. Optics and Precision Engineering, 2010, 18(5): 1182-1188.

[10] [10] XIONG Jin-wang, JIA Ping, LIU Jing-hong, et al. Research on coding for photoelectric shaft encoder based on image sensor［J］. Measurement and Control Technology, 2009, 28(12): 6-9.