摘要
三浮陀螺仪是三浮平台惯导系统中的核心器件,其性能在很大程度上决定了系统所能达到的最高指标。作为三浮陀螺的关键技术,磁悬浮支承在实现浮子精确定中的同时也引入了磁悬浮干扰力矩。按照误差来源和作用机理,将磁悬浮干扰力矩的影响要素分为力和力臂两方面。对照陀螺漂移模型对无法补偿的磁悬浮干扰力矩进行了建模,并综合温度和过载对误差模型中各项误差的影响,建立了新的三浮陀螺误差模型。磁悬浮干扰力矩会产生陀螺零次项和一次项漂移,通过六位置法可以将磁悬浮干扰力矩从陀螺漂移模型中分离出来。根据磁悬浮干扰力矩和磁悬浮平均加力可以估算出干扰力矩等效的力臂,该值可用于对仪表的机加装配过程的检查和仪表的设计改进,提高仪表的使用精度。
The three-float gyroscope is the core device of the three-floating platform inertial navigation system,and its performance determines the highest indicators that the system can achieve.As the key technology of the three floating gyroscope,the magnetic suspension bearing was introduced to keep the float in the center,the magnetic moment was introduced at the same time.According to the source of error and the mechanism of action,the influence factors of the magnetic suspension interference moment were divided into two parts,which were the force and the arm of force.The no-compensatory magnetic suspension disturbance moment was modeled contrasted with the gyro drift model,and the new three-floated gyroscope error model was established considering the effects of both the temperature and the overload to errors.The disturbance moment in three-floated gyroscope could generate the gyro constant drift and the zero-order drift.They can be separated from the gyro drift model through the six-position way.The equivalent force arm can be estimated according to the average strength and this value can be used to optimize the check of instruments machining and installation and improve the accuracy of instruments.
作者
王雪
杨志超
邓忠武
马宁
WANG Xue;YANG Zhichao;DENG Zhongwu;MA Ning(Beijing Aerospace Control Instrument Research Institute,Beijing 100854,China;Shaanxi Aerospace Times Navigation equipment Co.,Ltd.,Baoji 721000,China)
出处
《新技术新工艺》
2018年第9期38-42,共5页
New Technology & New Process
基金
"十三五"总装预研项目(41417010601)
关键词
三浮陀螺
磁悬浮
干扰力矩
陀螺漂移
建模
误差模型
three floated gyroscope
magnetic suspension
disturbance moment
gyro drift
modeling
error model
