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针对激光陀螺仪定位系统研制中,因支架结构不合理及动态性能差而出现的系统输出数据误差大和死机等问题,在分析研究原支架基础上,对陀螺仪支架重新进行结构设计和动态设计,通过对支架模型的多次修改和重分析,得到最后的设计结构。试验验证,计算结果与试验结果有较好的一致性。新支架结构合理,其固有频率远离陀螺仪抖动器工作频率,陀螺仪安装面的相对振幅降低到最小。经现场测试检验,新支架应用于定位系统后,陀螺仪工作正常,输出数据好,系统定位精度达到设计要求。本文提出的动态设计方案,对精密电子设备机械部分的动态设计有参考价值。
In the research of laser gyro positioning system, due to the unreasonable structure and poor dynamic performance of the scaffold, the output error of system output and crashing are all serious problems. Based on the analysis of the original scaffold, the structural and dynamic design of the gyroscope is redesigned. Through the revision and re-analysis of the stent model, the final design structure was obtained. Experimental verification, calculation results and test results have good consistency. The new stent structure is reasonable, its natural frequency away from the gyroscope operating frequency, the relative amplitude of the gyroscope mounting surface to a minimum. The field test test, the new stent used in the positioning system, the gyro work properly, the output data is good, the system positioning accuracy to meet the design requirements. The dynamic design proposed in this paper has reference value for the dynamic design of mechanical parts of precision electronic equipment.