【摘要】 火箭橇试验具有产生大过载、高速度、强振动和冲击等综合条件的能力,可以在综合环境条件下对惯性测量装置的功能和精度进行验证。针对惯性平台系统开展了3km火箭橇轨道的功能验证试验,对振动传感器的数据进行了过载分析和振动量级的谱分析。研究了惯性平台系统火箭橇试验后的数据处理方法,包括振动传感器对橇体运行的过载和振动量的分离方法,遮光板光电组件的位置和速度微分方法,以及惯性平台系统的导航算法等,并通过数据比较,对惯性平台系统的性能和功能进行评价。由于遮光板外测系统的采样时间和观测量与捷联惯性测量装置不同,还探讨了试验后观测信息之间的转换、同一时刻不同信息数据的比较等数据处理方法,通过数据比较验证了惯性平台系统在火箭橇试验时的功能正常。该研究对惯性平台系统进一步开展精度验证和误差系数的分离奠定了基础。更多还原

【Abstract】 Rocket sled test can produce large acceleration,high velocity and strong vibration,and therefore can be used to validate the functionality and accuracy of inertial measurement unit(IMU) in comprehensive environment conditions.The IMU’s functional verification tests are conducted on a 3 km rocket-sled track,and overload analysis and vibration level spectrum analysis are made based on the vibration sensor data.The inertial platform system rocket sled test data processing methods are studied,including the separating method for the sled body’s overload and vibration data,the differential method for position and speed of light-proof board’s electro-optic module,as well as the navigation algorithm of Inertial platform system,etc..Since the sampling time and observations of exterior measuring system for light-proof board are different to those of strapdown IMU,the paper investigate the data processing methods,including the transformation between post-test observation data,and the comparison of simultaneously obtained data.The data comparison validates the performance and functionality of inertial platform system.This work lay a foundation for the further study on verification of IMU precision and separation of error coefficients.更多还原