In the beginning , the working principle , testing and data processing system of pdl micro - control material test machine is introduced ; then more attention is paid to the hardware system which is composed of high precision raster linear displacement sensor , high precision force sensor , the digital displaying sets , the interface equipments and the controlling circuits etc to perform the data collection and ensure the testing precision of the whole system 論文首先介紹了pdl材料拉伸試驗(yàn)機(jī)的工作原理、測試及數(shù)據(jù)處理系統(tǒng);接著詳細(xì)介紹了由高精度光柵線位移傳感器和壓力傳感器、數(shù)顯裝置、接口裝置及控制電路等組成的新的硬件系統(tǒng),來完成數(shù)據(jù)采集,并保證整個(gè)系統(tǒng)的測試精度要求。