印刷电路板光学检测定位平台系统的设计及应用

发布时间：2018-07-11 14:09

本文选题：光学检测 + 定位平台　；参考：《北京工业大学》2015年硕士论文

【摘要】：自动光学检测技术在电路板质量检测中有着广泛的应用。定位平台作为光学检测技术的关键设备,其定位精度和运动速度直接影响电路板质量检测结果的准确性和工作效率。因此,迫切需要研究开发快速高精度的定位平台。为此,本文设计了用于自动光学检测的快速高精度定位平台系统。本文的主要内容如下:(1)完成定位平台的硬件系统的总体设计,并在实验室条件下搭建了定位平台样机。采用永磁同步电机驱动滚珠丝杠实现运动轴直线运动,直线光栅尺作为位置测量装置,构建平台的伺服闭环控制系统。(2)建立定位平台运动轴模型。分析了工业上常用的定位控制算法,采用前馈加PID反馈控制的复合控制算法进行平台定位控制。在Matlab/Simulink环境下,构建仿真模型进行仿真。获得了加入与未加入复合控制算法两种情况下的仿真结果,以验证该控制算法对伺服控制系统的控制效果分析。(3)将前馈加PID反馈控制的复合控制算法应用于ACR9000控制器中,通过反复调整控制参数,使其满足伺服控制系统的稳定性和动态性的指标,达到平台定位高精度、高速度的设计要求。(4)基于动态链接库和VC++6.0开发了平台的软件系统,包括运动测试、PCB板定位孔检测与定位和通讯等功能模块。(5)对平台定位精度进行实验测试,验证了平台本身的设计性能指标。然后将平台样机应用于PCB板定位孔的定位实验,结果进一步表明本文研究设计的定位平台能够满足自动光学检测系统的定位要求。仿真实验和实测实验结果表明,本文设计的定位平台定位精度达到了设计指标,能够满足印刷电路板光学检测的性能要求。
[Abstract]:Automatic optical detection technology has been widely used in circuit board quality testing. As the key equipment of optical detection technology, the positioning accuracy and moving speed of the positioning platform directly affect the accuracy and efficiency of the quality test results of the circuit board. Therefore, there is an urgent need to research and develop a fast and high precision positioning platform. Therefore, a fast and high precision positioning platform system for automatic optical detection is designed in this paper. The main contents of this paper are as follows: (1) the overall design of the hardware system of the positioning platform is completed, and the prototype of the positioning platform is built in the laboratory. The linear motion of the moving axis is realized by using the ball screw driven by the permanent magnet synchronous motor, and the linear grating ruler is used as the position measuring device to construct the servo closed-loop control system of the platform. (2) the moving axis model of the positioning platform is established. The commonly used positioning control algorithm in industry is analyzed, and the compound control algorithm based on feedforward and pid feedback control is used for platform positioning control. In Matlab / Simulink environment, the simulation model is built to simulate. The simulation results of adding and not adding compound control algorithm are obtained to verify the control effect of the control algorithm on servo control system. (3) the compound control algorithm with feedforward plus pid feedback control is applied to ACR9000 controller. By adjusting the control parameters repeatedly to meet the stability and dynamic index of servo control system, the design requirements of high precision and high speed of platform positioning are achieved. (4) based on dynamic link library and VC 6.0, the software system of the platform is developed. Including the motion test PCB board positioning hole detection and positioning and communication functional modules. (5) the platform positioning accuracy of the experimental test to verify the platform itself design performance index. Then the prototype of the platform is applied to the positioning experiment of PCB board, and the results show that the positioning platform designed in this paper can meet the requirements of the automatic optical detection system. The simulation and experimental results show that the positioning accuracy of the platform is up to the design target and can meet the performance requirements of printed circuit board optical detection.
【学位授予单位】：北京工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN41

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