无接触式索网张力测量方法  

Cable Tensility Testing Method Based on Non—contact Measurement

作　　者：张桥[1] 马小飞[1] 颜祥程[2] 

机构地区：[1]中国空间技术研究院504研究所 [2]中国人民解放军95746部队

出　　处：《计算机测量与控制》2015年第12期3987-3989,共3页Computer Measurement &Control

摘　　要：为了准确获取天线反射器上柔性索网结构的张力,提出了一种无接触式索网结构张力测量方法;该方法借助摄影测量仪一次即可测出所有绳索的位移变化量,再根据绳索载荷位移关系计算出全部绳索张力;理论分析表明:当摄影测量精度一定时,张力测量精度随绳长增加而提高;张力测量精度与载荷大小相关,随着载荷提高,绳子钢化,此时测量精度即对应绳子的刚度;通过简单验证试验表明该方法具有测量效率高、准确性高等特点,可用于测量索网系统的张力。To obtain the cable tensility of reflector in antenna system accurately, a new non--contact method for measure the cable tensil ity is proposed. The V--Stars system is used to measure the stretch of cables, and the tensilities of all the cables are obtained according to the relationships of tensile and length of cable. Academic analysis indicates that the precision of tensility will be improved with tile length of cable when the precision of V--Star system is fixed. The precision of tensility is related to the tensility of cable, and the precision of tensility is cor responding to the rigidity of cable when the cable is rigid. The simple test results show that the method in this paper is high efficient and ex- act to obtain the tensility of cable.

关 键 词：索网结构 无接触 张力测量 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]