本科毕业论文回转体零件位置检测仪控制系统设计.docVIP

回转体零件位置检测仪控制系统设计 摘要 回转工作台是回转体零件位置检测仪的重要组成部分。回转工作台的分度精度是位置检测仪的重要指标。本课题进行了回转台的硬件结构设计、电气设计、软件设计、调试等工作。本研究将为未来加工用回转台直接驱动技术的应用打下坚定的基础。 基于PC机+GALIL运动控制器的并行双CPU系统形式，构建了由运动控制器、力矩电机、增量式编码器组成的回转台系统。 系统软件采用模块化设计思想，通过调用GALIL卡内部的动态链接库，来实现对数控回转台的控制及监控。利用VB开发了上位机接口软件，编制了下位机控制程序。 该系统采用力矩电机和增量式编码器构成闭环伺服系统，采用经典的PID控制算法，通过调整参数，实现了控制系统快速、稳定和准确性。然而，传统PID控制理论存在一定缺陷，本文阐述了伺服控制系统的发展趋势，并就此提出了见解。 最后，对回转台的分度精度进行了测试。比较了几种测试方案，选用激光干涉仪进行角度测试，测试过程稳定可靠。基本达到了设计要求，顺利的完成了本课题。 关键词：回转台，力矩电机，，分度精度  CONTROL SYSTEM DESIGN FOR ROTATIONAL PARTS POSITION DETECTOR ABSTRACT Rotary table is one of the important parts of rotary parts position detector. The dividing accuracy of rotary table is a crucial indicator of position detector. This paper presents the simple design of architecture, electrical design, the design for software, and debugging Etc. The research will lay a firm foundation for Direct-drive rotary table used in machine tool. The paralleled double CPU digital control system was based on “PC+GALIL” motion controller. CNC of rotary table consists of motion controller, torque motor, incremental encoder Etc. The application software of CNC system has adopted the modularization design mind and realized the monitoring of the machine’s state and motion control via calling dynamic link library of GALIL. The interface software for master machine and control Program for slave machine were developed through VB. Servo system has adopted the Direct-drive of torque motor, and use incremental encoder as feedback. The classical PID algorithm was adopted, to achieve the speediness、stability and accuracy of this control system. Nevertheless, there are some limitations in the traditional PID control theory. This paper presented the development of servo control system, proposing opinions. In the end, the dividing accuracy of the rotary table has been tested. Comparison of several testing methods, angle measuring device based on Laser Interferometer has been selected. Testing process is very stable. Meet the design