首页> 外国专利> METHOD AND DEVICE FOR COMBINED TESTING OF PLATFORM-FREE INERTIAL MEASURING UNIT ON THE BASE OF MICROMECHANIC GYROS AND ACCELEROMETERS

METHOD AND DEVICE FOR COMBINED TESTING OF PLATFORM-FREE INERTIAL MEASURING UNIT ON THE BASE OF MICROMECHANIC GYROS AND ACCELEROMETERS

机译:基于微机械陀螺仪和加速度计的无平台惯性测量单元组合测试的方法和装置

摘要

FIELD: measurement technology.;SUBSTANCE: method is based upon determining characteristics of platform-free inertial measuring units (PFIMU) under conditions of simultaneous influence of dynamic and temperature test parameters. Direction of axis of combined dynamic influence onto PFIMU preset in advance and PFIMU is installed in such a manner that it geometric center coincides with axis of combined dynamic influence onto PFIMU. Test are conducted for any preset direction of spatial orientation of measurement coordinate system of PFIMU relatively axis of combined dynamic influence which is achieved due to rotation of PFIMU around mentioned geometric center of its measurement coordinate system. Device has testing platform for fixing PFIMU on it. Vertically oriented axis of rotation of single-axis bed provided with turning platform is built into space of thermal chamber through the hole in its lower part. Vibration-testing machine is fastened tightly to the platform by means of rigid bad provided with load compensation low-frequency isolation and automatic compensation system. Axis of defining of vibration acceleration of vibration-testing machine is aligned with axis of rotation of single-axis bed. Two-axis gimbal suspension is tightly fixed onto working surface of vibration-testing machine. Testing platform for fixing PFIMU is mounted onto the gimbal suspension. Internal axis of rotation of the platform is aligned with axis of rotation of single-axis bed and with axis of defining of vibration accelerations of vibration-testing machine. Precision characteristic of micromechanical of gyroscopic sensitive elements of PFIMU can be calibrated as well as resource testing of PFIMU can conducted within wider temperature and speed range. Vibration influence and linear overloads can be applied also.;EFFECT: ten times shorter time for conducting test; reduced cost of testing.;5 cl, 1 dwg
机译:领域:测量技术;实体:该方法基于在动态和温度测试参数同时受到影响的条件下确定无平台惯性测量单元(PFIMU)的特性。预先组合PFIMU上的组合动态影响轴的方向,并以使其几何中心与组合到PFIMU上的组合动态影响轴的方式安装PFIMU。针对PFIMU测量坐标系相对于组合动态影响轴的空间方位的任何预设方向进行测试,这是由于PFIMU绕其测量坐标系的几何中心旋转而实现的。设备具有用于在其上固定PFIMU的测试平台。带有旋转平台的单轴床的垂直定向的旋转轴通过其下部的孔进入热室空间。振动试验机通过刚性负载牢固地固定在平台上,并配有负载补偿低频隔离和自动补偿系统。振动试验机振动加速度的定义轴与单轴床的旋转轴对齐。两轴云台悬架固定在振动试验机的工作面上。用于固定PFIMU的测试平台安装在云台悬架上。平台的内旋转轴线与单轴床的旋转轴线以及振动试验机的振动加速度定义轴线对齐。可以校准PFIMU的陀螺敏感元件的微机械的精密特性,并且可以在更宽的温度和速度范围内进行PFIMU的资源测试。振动影响和线性过载也可以应用。效果:进行测试的时间缩短了十倍;降低了测试成本。; 5 cl,1 dwg

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