振镜扫描枕形畸变分析及校正算法  

Analysis and Correction Algorithm of Pincushion Distortion in Galvanometer Scanning

作　　者：丁宇韬 张军[2] 郭遥 陈昊 Ding Yutao;Zhang Jun;Guo Yao;Chen Hao(School of Electronic Engineering and Automation,Guilin University of Electronic Technology,Guilin 541004,Guangxi,China;School of Artificial Intelligence,Guilin University of Electronic Technology,Guilin 541004,Guangxi,China;School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,Guangxi,China;School of Optoelectronic Engineering,Guilin University of Electronic Technology,Guilin 541004,Guangxi,China)

机构地区：[1]桂林电子科技大学电子工程与自动化学院,广西桂林541004 [2]桂林电子科技大学人工智能学院,广西桂林541004 [3]桂林电子科技大学信息与通信学院,广西桂林541004 [4]桂林电子科技大学光电工程学院,广西桂林541004

出　　处：《激光与光电子学进展》2024年第13期247-252,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61975246);广西自然科学基金(2022GXNSFDA080007)。

摘　　要：在理论和原理基础上,详细分析了振镜在扫描过程中产生枕形畸变的具体原因,建立了一套完善的振镜扫描系统数学模型,同时为解决枕形畸变问题,提出了一种驱动电压反向补偿的算法。该算法通过推导扫描路径与振镜旋转角度之间的关系,给出了中间电压补偿过程的仿真结果,并推导出振镜驱动电压反向补偿算法的校正公式,以仿真形式展示了枕形畸变的校正量。仿真和预实验结果表明,该算法可以有效校正枕形畸变,从而提高振镜扫描系统的准确性,并满足实际应用的要求。In this study,the specific reasons for pincushion distortion during the scanning process of galvanometers are analyzed.A complete mathematical model of the galvanometerscanning system is established based on theory and principle,and an algorithm for reverse compensation of the driving voltage is proposed to solve the pincushion distortion problem.The proposed algorithm expresses the relationship between the scanning path and the deflection angle of the galvanometer,presents simulation results of the intermediate voltage compensation process,and derives the correction formula of the galvanometerdriving reverse voltage compensation algorithm.The correction amount of pincushion distortion is presented in a simulation form.The simulation and experimental results demonstrate that the proposed algorithm can effectively correct pincushion distortion,thereby improving the accuracy of the galvanometer scanning system and satisfying the requirements for practical applications.

关 键 词：李萨如 振镜扫描 枕形畸变 电压反向补偿 

分 类 号：TN249[电子电信—物理电子学]