基于FPGA的弹姿测试数字陀螺仪关键技术研究

Research on Key Technology of Digital Gyroscope for Projectile Flight Attitude Test on FPGA

提出了一种基于FPGA的弹姿测试数字陀螺仪设计方案。该系统微惯性测量单元由适配性强的单轴MEMS陀螺仪自由组合而成,嵌入了全温域温度补偿及安装误差角补偿模型算法,进行FPGA内部测试参数解析,通过FPGA多级乒乓操作缓解高速数据流压力,提高了系统的测试精度和环境适用性,实现了输出参数的标准化、简单化要求。通过试验充分验证了弹姿测试数字陀螺仪测量精度高,且设计体积小,适用于空间有限的弹载动态参数测试环境,具有工程推广应用价值。

A design scheme of digital gyroscope based on FPGA was proposed.The micro-inertial measurement unit was freely combined by a highly adaptable single-axis MEMS gyroscope,embedded with full-temperature temperature compensation and installation error angle compensation model algorithm,which performed internal FPGA test parameter analysis and was alleviated by FPGA multi-stage ping-pong operation.High-speed data flow pressure improves the system’s test accuracy and environmental applicability,and achieves standardization and simplification of output parameters.The test has fully verified that the digital test gyroscope with high accuracy and small design volume is suitable for the space-time dynamic parameter test environment with limited space.It has engineering application value.