基于USB通讯运动控制卡的上位软件设计与实现

发布时间：2018-07-06 19:06

本文选题：上位机软件 + 运动控制卡　；参考：《辽宁科技大学》2016年硕士论文

【摘要】：结合国内某科研院所的使用实际,开发了一套功能丰富的上位机软件系统用于运动控制。系统构成属于开放式数控系统,硬件核心为国产的具有USB通讯接口的9030运动控制卡。软件系统使用操作方便,参数设置灵活,界面友好,其主要功能如下:首先通过DLL的调用完成了与下位机的通讯,包括对运动控制卡和伺服电机的控制和信息反馈;其次,通过采用串口通讯收集了磁场检测仪表的磁场数据,并及文本文档形式保存;最后可根据矩形、弧形和自定义G代码的三种方式完成检测路径规划。根据矩阵和弧形的组成特点,在路径规划中又分为X方向优先和Y方向优先以及角度优先和径向优先。路径规划不但可以根据所输入图形的尺寸大小,还可以由不同的细分程度来完成至G代码的转化,其中图形尺寸和细分程度都可以在用户操作界面上设置。由于所选的运动控制卡不具有直接执行G代码的功能,而实际检测中又经常遇到G代码格式的运动轨迹,所以程序还具有G代码转成基本位移执行的功能,也就是说相当于上位机程序代替运动控制卡完成了G代码可直接执行。由于涉及到G代码转换,对直线和圆弧插补进行了一定的理论研究,在插补原理的基础上,结合实际使用描述了插补的转化步骤,详细说明了圆弧插补中的NURBS公式计算及应用,以此提高圆弧插补精度。结合实际使用来看,开发这个软件是很有必要的,不仅完成了基本功能,而且集成了运动控制卡和磁场检测仪两个主要硬件的数据通讯。而且软件具有较强的通用性,开放式数控系统已经逐渐的国产化,但一般而言其自带的控制软件都普遍功能简单,而且不开源,无法自定义添加功能,例如串口通讯和路径规划。最后软件可完成了检测相关信息,例如检测时间,仪表型号等的保存以及按照检测点的形式保存该点的磁通量,便于形成检测报告。
[Abstract]:Based on the practical application of a scientific research institute in China, a set of software system with rich functions is developed for motion control. The hardware core of the system is a 9030 motion control card with USB communication interface. The main functions of the software system are as follows: firstly, the communication with the lower computer is completed by calling DLL, including the control of motion control card and servo motor and information feedback. The magnetic field data of the magnetic field detecting instrument are collected by serial communication, and the document form is saved. Finally, the detection path planning can be completed according to the three ways of rectangle, arc and custom G code. According to the composition characteristic of matrix and arc, the path planning is divided into X direction priority and Y direction priority, angle priority and radial priority. Path planning can not only be based on the size of the input graphics, but also can be subdivided by different degrees of transformation to G code, in which the graphic size and subdivision degree can be set on the user interface. Because the selected motion control card does not have the function of executing G code directly, and the motion track of G code format is often encountered in actual detection, the program also has the function of converting G code into basic displacement execution. That is equivalent to the PC program instead of motion control card completed G code can be directly executed. Because of the G code conversion, the theory of straight line and arc interpolation is studied. On the basis of interpolation principle, the transformation steps of interpolation are described, and the calculation and application of Nurbs formula in arc interpolation are described in detail. In this way, the precision of arc interpolation is improved. According to the practical application, it is necessary to develop this software, which not only completes the basic function, but also integrates the data communication between the motion control card and the magnetic field detector. And the software has strong versatility, open CNC system has been gradually domestic, but generally speaking, its own control software are generally simple, and do not open source, can not customize add function, For example, serial communication and path planning. Finally, the software can complete the detection of relevant information, such as the detection time, instrument type and so on, as well as the form of the magnetic flux in the form of the detection point, so as to facilitate the formation of the detection report.
【学位授予单位】：辽宁科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP311.52

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