针对轻**红外光学瞄具稳定性检测的需求,设计了一种基于牛顿反射式红外系统进行工作的电动二维精密转台。利用CATIA建立了电动二维精密转台的三维模型,该二维精密转台采用小型二维U形转台结构形式,采用直流力矩伺服电机直接驱动和24位绝对式轴角编码器进行角度测量。通过有限元分析软件PATRAN对转台的关键部件进行热力学分析与模态分析,获取转台的应力分布云图。云图结果表明,其设计方案可行,结构合理。

For light-arm infrared optical sight stability testing requirements, we design a two-dimensional electrical-turntable platform based on Newton′s reflex infrared system. Electrical control was established based on CATIA three-dimensional model of two-dimensional precision turntable model. The two-dimensional precision turntable model was using small two-dimensional U turntable structure, driven by a DC servo motor directly. 24-level axial angle encoder was used for angle measurement. Through finite element analysis software PATRAN on the turntable platform, key components of the thermodynamic analysis and modal analysis were conducted, obtaining the turntable stress distribution nephogram. The results show that the design scheme is feasible and reasonable.