爬行光栅信号变间隔数据采集的实验研究

Experimental Approach for Variame-Internlission Data Collection of Stick-Slip Grating Signals

爬行现象广泛地存在于低速运动的机器部件中。本文针对爬行的计算机辅助实验（ＣＡＴ）中遇到的一个关键问题，即爬行光栅信号定间隔数据采集占用微机内存和处理工作量大的问题，进行理论和试验研究，提出一种变间隔数据采集原理，并给出一种在以Ｚ８０ＣＰＵ单板机为核心而构成的微机辅助试验装置上具体应用的方法。该方法采用软件与硬件相互补充，解决了变间隔采样原理的主要技术问题。通过大量实际应用试验验证了原理和方法的正确性及可行性，从而为爬行ＣＡＴ及爬行测量仪的智能化工作解决了一个关键性问题。

Stick-slip motion takes place when a machine travels at low speed.In Computor AidedTest(CAT) for stick-slip,one key problem is that fixed-intermission data collection of stick-slip grating signals take memory space in microcomputor and have to deal with a vast amountof processing work.In this paper both the theroctical and experimental approaches have beenmade.Aprinciple of variable-intermission data collection and the device with host Z80CPUfor CAT application have been proposed.