Tao Wang, Liude Tian, Jianke Zhao, Yan Zhou, Chen Chen, Huaixue Zhao, Kai Liu, Liang Pan, Wei Wan, Yining Liu, Ting Zhang. Research on Encoder Error Test with Limited Angle[J]. Acta Optica Sinica, 2018, 38(5): 0512001
- Acta Optica Sinica
- Vol. 38, Issue 5, 0512001 (2018)
Fig. 1. Schematic of using plane mirror-autocollimation theodolite to measure angle error
Fig. 2. (a) Relative position relationship between encoder and plane mirror coordinate system; (b) relative position relationship between plane mirror coordinate system and theodolite coordinate system
Fig. 3. Angle system error with different ω when δ, α are 0
Fig. 4. Elevation angle of theodolite with different ω when δ, α are 0
Fig. 5. Angle system error with different δ when ω is 2° and α is 1°
Fig. 6. Elevation angle of theodolite with different δ when ω is 2° and α is 1°
Fig. 7. Angle system error with different α when ω is 2° and δ is 10°
Fig. 8. Elevation angle of theodolite with different α when ω is 2° and δ is 10°
Fig. 9. Experimental device for testing the angle error of the encoder
Fig. 10. Angle error of encoder with zero system error
Fig. 11. Angle error of encoder with system error
Fig. 12. Angle error after correcting system error
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