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为了能够精确检测到测试转台在低速运行下的角速率,设计了一种基于双频激光干涉仪的角速率精度检测系统。首先,对本检测系统各项误差进行机理分析。然后,综合各项误差项建立总体相对误差模型。最终,通过仿真分析得到各个误差因子对相对误差项的影响,为保证检测系统相对精度提供理论依据,能够满足对高精度惯性器件测试转台低速段0.0001(°)/s~1(°)/s速率检测要求。
In order to accurately detect the angular velocity of the test turret at low speed, an angular rate accuracy detection system based on dual-frequency laser interferometer was designed. First of all, the detection system for the error analysis of the mechanism. Then, the error term is integrated to establish the overall relative error model. Finally, the influence of each error factor on the relative error term is obtained through the simulation analysis, which can provide a theoretical basis for ensuring the relative accuracy of the detection system, and can meet the requirements of 0.0001 (°) / s ~ 1 (°) / s Rate detection requirements.