基于PMAC的回转体自动扫查超声检测仪控制系统关键技术  

Some Key Techniques of the Control System on Ultrasonic Testing Instrument by Automation Scanning for Rotator Based on PMAC

作　　者：王亚军[1] 李建文[1] 吉方[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,四川绵阳621900

出　　处：《机电产品开发与创新》2004年第1期83-85,共3页Development & Innovation of Machinery & Electrical Products

摘　　要：本系统充分利用了PMAC的强大功能,预先对回转体分类编制相应的参数化运动程序,从输入的工件几何信息中提取参数取值,进而合成适于各种工件的扫查运动程序。在扫查过程中,通过实时存贮换能器位置信息生成位置数据文件,进而建立采样数据与采样位置的对应关系。该法适用于任意曲面,且避免了后处理的反演过程。在扫查中,通过M变量产生数据采集卡工作所需的同步信号,简化了主控系统结构。The powerful performance of PMAC is fully used in the detection system. To get the scan movement programe for univeral rotator, the programe for different type part is made previously while the part dimension is represented by parameters, the value of the parameter is pick-uped from user input. The corresponding relation on sample of rebounded ultrasonic and sample position is established from the positon data file created by collecting PMAC state data. This technique is fit to any kind of part without complicated converse calculation. The work on sample of rebounded ultrasonic and scanning movement are synchronized by M variable of PMAC,it makes the control mechanism is more simple.

关 键 词：回转体 自动扫查 超声检测仪 控制系统 PMAC 无损检测 

分 类 号：TG115.285[金属学及工艺—物理冶金]