基于LabVIEW的试车台天平原位校准  

In-situ Calibration of Testbed Based on LabVIEW

作　　者：皮祖成[1] 陈曦[2] 陈文[1] 王诚[1] 

机构地区：[1]中国航天空气动力技术研究院,北京100074 [2]中国航天建设集团有限公司,北京100071

出　　处：《测试技术学报》2017年第4期357-363,共7页Journal of Test and Measurement Technology

摘　　要：试车台是一种用于发动机推力测量的专用测试台,本文所述试车台天平是一种新型的6分量大载荷测力天平.为了消除安装发动机模型后对测力的影响、提高测量的精度,对这种天平采用了原位校准的方法.校准时天平安装在正常使用的位置,不用拆卸到实验室进行校准.该方法将所需的标准加载装置安装到实验现场的测力机构上,在不改变天平使用位置的情况下对天平进行现场校准.本文主要阐述了编写和使用LabVIEW程序对校准过程进行控制的方法.通过控制8轴的伺服系统来产生实验所需的标准力,同时测量天平的应变量.通过多组实验数据,最终计算出天平的校准公式、精度、准度等重要指标.Testbed is a kind of thrust force measurement equipment for motor test. A new type of force measurement balance, Which can measure six components, is used for engine test. In order to reduce the affect of the load and increase the accuracy of the test we choose original position calibration method. This method, which is different from the traditional calibration method, not need to change the position of the balance from the original position of the test. The standard force producer is located around the framework of the balance to perform the test with no change of position. This paper will introduce you a method which is based on LabVIEW to control the calibration procedure and accuracy. By controlling the 8-axis servo system to produce the required standard force of the experiment, while measuring the a- mount of strain of the balance. Through several sets of experimental data, we can generate the formula, accuracy, and other important indicators of the balance.

关 键 词：试车台 原位校准 LABVIEW 6分量大载荷测力天平 

分 类 号：V211.74[航空宇航科学与技术—航空宇航推进理论与工程]