现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
15期
89-93
,共5页
无陀螺捷联式惯性导航系统%角速度解算%ADXL377%TMS320C6713
無陀螺捷聯式慣性導航繫統%角速度解算%ADXL377%TMS320C6713
무타라첩련식관성도항계통%각속도해산%ADXL377%TMS320C6713
gyroscope free strap-down inertial navigation system%angular velocity resolving%ADXL377%TMS320C6713
由于陀螺仪量程较小，难以应用于高转速载体的姿态测试中，因此设计了以MEMS线加速度计ADXL377和地磁传感器HMC1043为微惯性测量单元（MIMU）的微型角速度解算系统。系统以FPGA作为协处理器控制ADC模块对11路传感器信号的同步转化，并对转换后的数据进行及时采集、缓存；以DSP芯片TMS320C6713作为主处理器完成角速度的实时解算。系统最大可测角速度达30 r/s，信号的采集、解算实时性强，角速度的测量精度高，而且电路半径仅5 cm，安装方便、功耗低。
由于陀螺儀量程較小，難以應用于高轉速載體的姿態測試中，因此設計瞭以MEMS線加速度計ADXL377和地磁傳感器HMC1043為微慣性測量單元（MIMU）的微型角速度解算繫統。繫統以FPGA作為協處理器控製ADC模塊對11路傳感器信號的同步轉化，併對轉換後的數據進行及時採集、緩存；以DSP芯片TMS320C6713作為主處理器完成角速度的實時解算。繫統最大可測角速度達30 r/s，信號的採集、解算實時性彊，角速度的測量精度高，而且電路半徑僅5 cm，安裝方便、功耗低。
유우타라의량정교소，난이응용우고전속재체적자태측시중，인차설계료이MEMS선가속도계ADXL377화지자전감기HMC1043위미관성측량단원（MIMU）적미형각속도해산계통。계통이FPGA작위협처리기공제ADC모괴대11로전감기신호적동보전화，병대전환후적수거진행급시채집、완존；이DSP심편TMS320C6713작위주처리기완성각속도적실시해산。계통최대가측각속도체30 r/s，신호적채집、해산실시성강，각속도적측량정도고，이차전로반경부5 cm，안장방편、공모저。
To solve the problem that gyroscope can not be used in the attitude testing of high rotation carrier due to its smmal measuring range,a mini angular velocity resolving system was designed to detect angular velocity. The system takes MEMS ac-celerometer ADXL377 and geomagnetic sensor HMC1043 as MIMU,FPGA as its coprocessor to control the ADC module to make the 11-way sensor signals converted synchronously,and DSP chip TMS320C6713 as core processor to achieve real-time re-solving of angular velocity. The system has a large measuring range and high-accuracy in detection of angular velocity,and high performance in high-speed real-time information accquisition and resolving,as well as small size,easy installation and low power consumption. The system′s maximum angular detecting speed is up to 30 r/s.
