脉冲激光直线高速态标刻性能研究  

Study on the performance of pulsed laser line high speed marking

作　　者：万辉[1] 晏强 余联庆[1] 李红军[1] WAN Hui;YAN Qiang;YU Lian-qing;LI Hong-jun(Wuhan Textile University, School of Mechanical Engineering and Automation, Wuhan 430070, China)

机构地区：[1]武汉纺织大学机械工程与自动化院,湖北武汉430070

出　　处：《激光与红外》2018年第2期177-181,共5页Laser & Infrared

基　　金：武汉纺织大学研究生创新基金项目(No.201601)资助

摘　　要：由于脉冲激光器发出的激光不是连续的,而是具有可调节的重复频率,因此振镜的扫描速度太快会导致标记出的直线呈离散的点状。人眼在明视距离处的分辨率约为0.1 mm,将待标记的直线分解成间距为0.1 mm待标点,使用DDA算法依次计算出每一个待标点的坐标,控制振镜依次扫描过每个待标点,并在待标点停留适当时间,使每个待标点所在位置都有激光脉冲落在上面。依次扫描过直线上的全部待标点,即可标记出连续的直线;根据激光器设定的重复频率和每个待标点所需激光脉冲个数,可以计算出振镜在每个待标点的最短等待时间。实验表明,使用该方法可以使相应频率下的直线标记速度达到最大,标记出的直线连续,标记直线的深度可控。Since the laser,emitted by the pulsed laser,is not continuous but has an adjustable repetition frequency,the marked straight line will be discrete if the scanning speed of the galvanometer is too fast.The resolution of human eye in the clear distance is about0.1mm,so the marked lines were divided into marked points with a pitch of0.1mm.The DDA algorithm was used to calculate the coordinates of each point in turn.Each point was scanned in turn through controlling galvanometer,and the stay for an appropriate time in each point make laser pulses fall on the each point.In this way,a continuous straight line can be marked.And the minimum waiting time depends on the repetition frequency of the laser and the number of laser pulses required for each point.Experiments show that this method can achieve the marking maximum speed in a given frequency,and the straight line is continuous,the depth of the line is in controllable.

关 键 词：脉冲激光 重复频率 脉冲宽度 连续 DDA算法 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]