双目光轴平行性检校仪检测精度分析

光电仪器的双目光轴平行度是仪器的重要指标,为实现双目光轴平行度的全天候定量测量,设计了双目光电仪器光轴平行性数字化检校仪。为满足仪器检测精度性能参数需求,根据检测原理,结合系统组成部件,分析影响系统检测精度的各种因素,建立检测精度综合不确定度分析模型。通过分析单一因素对系统综合测量不确定度的影响权重,针对重点误差因素,提出控制方法及措施。对所有影响因素进行合理的误差分配,优化双目光轴平行性检测仪的测量精度。

Precision analysis of the binocular optical axis parallelism calibration instrument

The binocular optical axis parallelism of photoelectric instrument is an important indicator.In order to achieve the all-weather quantitative measurement of the binocular optical axis parallelism,the optical axis parallelism digital calibration instrument for binocular photoelectric instrument was designed.To meet the precision demand of the instrument performance parameters,according to the measurement principle,combined with the system components,various factors that affect the measurement precision were analyzed.And a measurement precision comprehensive uncertainty model was established.By analyzing the influence weight of single factor on the comprehensive uncertainty,the methods and measures were put forward to control key error factors.A reasonable error distribution was carried out to optimize the measurement precision of the parallelism calibration instrument.