靶准直器悬臂调整机构装配误差分析

Error Analysis of Cantilever Adjustment Mechanism of Target Collimator Sensor

靶准直器(TAS)是惯性约束核聚变(ICF)靶场中的重要部件,其在靶室中的位姿是保证靶定位瞄准精度的主要因素之一。为了实现微米级的定位瞄准精度,需要利用调整机构对靶准直器位姿进行调整。为了实现高精度定位,有必要进行误差分析。本文采取直接线性化(DLM)方法对靶准直器调整机构末端的装配偏差进行研究。通过DLM分析了TAS的各个零件的形位公差敏感度系数,计算出了末端的装配偏差;同时分析出了对末端装配偏差造成较大影响的相关参数,并通过实验验证。对装配偏差影响较大的相关参数的研究,有助于后续TAS做出了合理的装配调整,减少装配偏差。

The Target Collimator Sensor(TAS) is an important component in the inertial confinement nuclear fusion (ICF) range, and its position in the target chamber is one of the main factors to ensure the accuracy of target positioning. In order to achieve micron-level positioning accuracy, it is necessary to adjust the position of the target collimator by using an adjustment mechanism. In order to achieve high-precision positioning, it is necessary to perform error analysis. In this paper, the direct linearization ( DLM) method is used to study the assembly deviation of the end of the target collimator adjustment mechanism. The geometrical tolerance sensitivity coefficient of each part of TAS was analyzed by DLM, and the assembly deviation of the end was calculated. At the same time, the relevant parameters which greatly affected the end assembly deviation were analyzed and verified by experiments. The study of relevant parameters that have a great influence on the assembly deviation helps the subsequent TAS to make reasonable assembly adjustments and reduce assembly deviation.