转子回转精度测试实验系统的研制

摘要

The rotation precision of rotator is an important factor affecting the performance of mechanical equipment.It is a meaningful task to measure the rotation precision of rotator and analyze its effect factors.Based on the data acquisition principle of universal serial bus (USB) and the circle image method,an experimental test system for the rotation precision of rotator was set up in the paper.The software environment which is suitable for testing and evaluating the rotation precision was also developed by using VC + +.Depending on the high-performance computer with multichannel data acquisition instrument and the rotary accuracy testing software,the offline demonstration and online measurement and evaluation for the rotation precision can be realized efficiently.With the experimental system for the rotation precision,four kinds of methods for evaluating the rotation precision were discussed and the rotation precision was analyzed and evaluated by using least square circle (LSC) method.The results verified the validation of the developed system.Moreover,a good teaching demonstration and excellent experimental effect have been achieved by the developed system after many times of experimental teaching.%基于USB数据采集原理,采用圆图像法建立了转子回转精度的测试教学实验系统,运用VC++语言编写了适合转子回转精度测试与评价的软件环境.该系统以高性能计算机为基础,利用多通道数据采集仪及回转精度测试软件,实现了脱机演示、实时采集和回转精度评定等功能,可以高效地完成回转精度的实时测试与分析.利用所建立的回转精度测试实验系统,分析了转子回转误差评定的4种方法,并采用最小二乘圆法对转子回转精度进行了分析和评定,验证了实验系统的有效性.同时,通过多次实验教学,证实了系统具有很好的教学示范性,可以达到良好的教学效果.