基于虚拟仪器的自动测试系统误差设计与处理

The Error Design and Error Processing of Virtual Instrument-based Automatic Test System

基于虚拟仪器的自动测试系统在测试过程中不可避免地会产生误差,影响测试结果的精度。目前还没有针对虚拟测试仪器的完整的误差评价体系,文章以某基于虚拟仪器的自动测试系统为例,描述了如何分析误差来源,并根据误差来源进行误差的设计,使得测试系统能够满足系统测试精度要求;同时利用一种简单实用的误差校准方法,进一步提高系统的测量精度。

Virtual instrument-based automatic test system will inevitably produce errors which affect the accuracy of test results in the testing process. There is no complete evaluation system of error for virtual test instruments. This paper takes the automated test system based on virtual instrument as an example to describe how to analyze error sources. And errors are designed based on error sources, making the test system meet the accuracy requirements, while taking advan- tage of a simple and practical error correction method to further improve the system accuracy.