高旋弹药飞行姿态测量用半捷联MEMS惯性测量装置研究

Research on Semi-strapdown MEMS Inertial Measurement Device for Flight Attitude Measurement of High-speed Rotating Ammunition

针对高速旋转弹药姿态测量中,传统的MEMS捷联惯性测量系统由于角速率传感器在量程和精度上不能同时满足测试要求而存在姿态测量精度低的问题,提出了半捷联MEMS惯性测量的概念、原理和半捷联MEMS惯性测量的实现方法;同时针对半捷联MEMS惯性测量系统的组成结构,对半捷联MEMS惯性测量装置进行了介绍。通过对动力输出仓、控制-驱动电路安装仓、惯性信息敏感仓和惯性信息采集仓的结构和功能说明,阐述了半捷联MEMS惯性测量的实现方法。该装置可在弹药高速旋转情况下为微惯性测量单元提供稳定测试环境,有效抑制高旋弹药对惯性系统姿态测量精度的影响,为高旋弹药姿态测量和常规弹药制导化提供了新的思路,具有一定的工程应用价值。

For attitude measurement of high-speed rotating ammunition, the traditional MEMS strapdown inertial measurement system has low measurement accuracy. Angular rate sensor cannot meet the test re- quirements in both range and accuracy. This paper proposes the concept and principle of semi-strapdown inertial measurement and the realization method of MEMS semi-strapdown inertial measurement, at the same time a semi-strapdown MEMS inertial measurement device is introduced on the foundation of composition structure of semi-strapdown. Through structural and functional description of power output bin, control-drive circuit installation bin, inertial information sensitivity bin and inertial information collection bin, this paper comprehensively expounds the realization method of semi-strapdown MEMS inertial measurement. The device can provide stable test environment for MIMU and effectively inhibit influence in attitude measurement accuracy when measured vector is in high-speed rotating environment. The system provides a new idea for high-speed rotating ammunition attitude measurement and conventional ammunition guidance. It is valuable for engineering implementation.