Controlling Scanning Trajectory of Two-dimensional Galvanometer Based on Bresenham Algorithm

Gouqing Zhou; Gangchao Lin; Xiang Zhou; Yizhi Tan; Weihao Li; Xianxing Li; Ronghua Deng

doi:10.3788/LOP202158.2312001

Laser & Optoelectronics Progress, Volume. 58, Issue 23, 2312001(2021)

Controlling Scanning Trajectory of Two-dimensional Galvanometer Based on Bresenham Algorithm

Gouqing Zhou^1,2、*, Gangchao Lin^1,2、**, Xiang Zhou^1,2, Yizhi Tan^1,2, Weihao Li^1,2, Xianxing Li^1,2, and Ronghua Deng²

Author Affiliations

¹College of Mechanical and Control Engineering, Guilin University of Technology, Guilin , Guangxi 541006, China

²Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin University of Technology, Guilin , Guangxi 541004, China

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Fig. 1. General block diagram of two-dimensional galvanometer scanning system

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Fig. 2. Scanning diagram. (a) y-axis swing; (b) x-axis swing

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Fig. 3. Comparison of algorithm output values before and after improvement. (a) x coordinate values comparison; (b) y coordinate values comparison; (c) $Δ x$ coordinate values comparison; (d) $Δ y$ coordinate values comparison

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Fig. 4. Control experiment

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Fig. 5. Two-dimensional galvanometer scanning experiment. (a) Two-dimensional galvanometer scanning; (b) 20° cone scanning trajectory

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Fig. 6. Scanning trajectory's simulation. (a) 10° scanning trajectory; (b) 20° scanning trajectory; (c) 20° scanning trajectory; (d) 60° scanning trajectory

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Fig. 7. 20° conical scanning trajectory and optical system transverse angle error after compensation. (a) Scanning trajectory of 20° cone after compensation; (b) comparison of lateral angle errors before and after compensation

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Table 1. Values of simulate variable scanning trajectory
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Table 1. Values of simulate variable scanning trajectory
Icon Scanning angle /（°） Motor speed /rps Flight speed /（km·h^-1） Scanning width /m Laser feet density /（spots·m^-2）
a 10 1.4 200 175.0 1.30
b 20 1.1 200 352.7 1.00
c 20 6.0 200 352.7 5.59
d 60 6.0 200 1154.7 1.33

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Gouqing Zhou, Gangchao Lin, Xiang Zhou, Yizhi Tan, Weihao Li, Xianxing Li, Ronghua Deng. Controlling Scanning Trajectory of Two-dimensional Galvanometer Based on Bresenham Algorithm[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2312001

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