基于PMAC的定位平台数据实时采集方法

2018-07-26

作者：殷建杰，张玉贵单位：北京空间机电研究所；中国空间技术研究院空间光学遥感器技术核心专业实验室

摘要：为了在基于PMAC的定位平台中实现数据的实时采集，对PMAC运动控制器的位置捕捉功能及PLC程序进行了研究。通过将光电传感器的触发信号输入到ACC-8P附卡中作为位置捕捉功能的激发信号，PMAC控制器会采用硬件寄存器来捕获当前光栅尺计数值并储存到捕捉寄存器中，整个过程为高速实时进行，同时通过PLC程序实时监测捕捉标志变量，并及时将捕捉的数据转存，上位机软件最后再将所有转存的数据采集计算，最终实现了对定位平台数据的实时采集。

关键词：定位平台；数据实时采集；PMAC位置捕捉；PLC

中图分类号：TG806；TH702文献标志码：A

Method of Realtime Data Acquisition of Positioning Platform by PMAC

Yin Jianjie，Zhang Yugui

Abstract:In order to realized the realtime data acquisition on positioning platform based on PMAC，the position capture function and PLC program of PMAC motion controller are researched.The trigger signal of photoelectric sensor is put into ACC8P vice card as an exciting signal of the position capture function.PMAC controller can capture the current gauge value of grating ruler by using hard register and save it into a capture register.The whole process is at a high speed and real time.At the same time，the flag variable is monitored and captured by using PLC program.The captured data is dumped timely.All dumped data is collected and calculated with a host computer，and the realtime data acquisition of positioningplatform is realized.

Keywords:positioning platform；realtime data acquisition；PMAC position capture；PLC