[1] Kao C, Huang H, Lu S. Optical encoder based on Fractional-Talbot effect using two-dimensional phase grating[J]. Optics Communications, 2010, 283(9): 1950-1955.

[2] Feng Yingqiao, Wan Qiuhua, Sun Ying, et al. High resolution interpolation techniques of small photoelectric encoder[J]. Infrared and Laser Engineering, 2013, 42 (7): 1825-1829.

[3] Ye Shengxiang. Optoelectronic displacement precision measurement technology[M]. Urumqi: Xinjiang Science and Technology Health Press, 2003.

[4] Hane K, Endo T, Ishimori M, et al. Integration of grating-image-type encoder using Si micromachining[J]. Sensors and Actuators A: Physical, 2002, 97-98: 139-146.

[5] Wu Hongsheng, Zeng Qifeng, Qiao Dong, et al. Filtering method of improving quality of grating Moiré fringe[J]. Optics and Precision Engineering, 2011, 19(8): 1944-1949.

[6] Leviton D B, Frey B. Ultra-high resolution, absolute position sensors for cry static applications[C]. SPIE, 2003, 4850: 776-787.

[7] Leviton D B, Garza M S. Recent advances and applications for NASA's new, ultra-high sensitivity, absolute, optical pattern recognition encoders[C]. SPIE, 4091: 375-384.

[8] Sugiyam Y, Matsu Y, Toyod H, et al. A 3.2 kHz 14-bit optical absolute rotary eneoder with a cmos profile sensor[J]. IEEE Sensors Journal, 2008, 8(8): 1430-1436.

[9] Bajic′a J S, Stupara D Z, Dakic′b B M, et al. An absolute rotary position sensor based on cylindrical coordinate color space transformation[J]. Sensors and Actuators A: Physical, 2014, 213: 27-34.

[10] Tresanchez M, Pallejà T, Teixidó M, et al. Using the image acquisition capabilities of the optical mouse sensor to build an absolute rotary encoder[J]. Sensors and Actuators A: Physical, 2010, 157(1): 161-167.

[11] Kim J, Kim J W, Kang C, et al. Absolute angle measurement using a phase-encoded binary graduated disk[J]. Measurement, 2016, 80: 288-293.

[12] Wang Yingnan, Yuan Bo, Ni Xuxiang. Subdivision technique of absolute angular encoder using array detector[J]. Journal of Chinese Zhejiang University, 2011, 45(2): 370-374.

[13] Tan Yinghao. The absolute angular encoder technique using linear detector[D]. Hangzhou: Zhejiang University, 2012.

[14] Qi Lili. The principle research on small optical pattern rotary encoder with highresolution[D]. Beijing: University of Chinese Academy of Sciences, 2013.