光电稳定机构指向误差建模与敏感度分析

光电稳定机构在武器装备的侦察、瞄准设备中应用广泛,其光轴指向误差直接影响着目标探测、识别的准确性.在加工和装配过程中难以避免的机构几何误差是指向误差的重要来源.基于多体系统运动学理论的误差建模方法,以两轴式稳定机构为例,建立了基于几何误差的指向误差模型.并通过误差模型的概率分析和误差敏感度的构建,比较了各项几何误差的影响程度.此方法既可在设计阶段用于指向误差的评估和几何误差的分配,也可在调试阶段用于几何误差标定.

Development of Pointing Error and Sensitivity Analysis of Opto-electrical Stabilization Mechanism

The mechanism of opto-electrical stabilization is widely used in the field of observation and measurement of the armament.Its pointing accuracy relates the realization of function as target realization or tracking.As the important source of pointing error,the geometric error of the mechanism is inevitable.So the paper develops the model of pointing error using the method of multi-body system error's development,which adopts the azimuth-elevation mechanism as the example.The effects of error sources are also...