摘要
针对半捷联MEMS惯性测量系统中MIMU所测得的弹体姿态信息需经过滑环传输到信息存储仓,而滑环在传输模拟量的过程中会引进电气噪声等问题,提出一种适用于半捷联MEMS惯性测量装置的数据硬回收系统设计方法。该系统采用ADC将MIMU输出的模拟量转化为数字量,并通过FPGA模拟的串行通信口输出,然后经滑环传输到惯性信息存储仓,最后通过FPGA模拟串行通信口接收数据并存储到FLASH中,实现对半捷联MEMS惯性测量装置中MIMU数据的实时记录。通过仿真转台试验验证,该系统能够实时地采集并存储弹体姿态信息,且具有采样率高,避免滑环电气噪声等特点。对常规弹药飞行全过程的姿态、位置信息的记录有一定的应用价值。
Against the fact that projectile attitude information from MIMU have to be transmitted to storage unit by slip ring, but slip ring may bring in electric interference while transmitting analog data, this paper puts forward a measure to solve the problem of data acquisition and storage in Half-strapdown MEMS Inertial Measurement System. This paper adopts the method of converting the analog signal from MIMU to digital one, and transmitting it to storage unit. Experiments show that this system can record the data accurately, ：with advantages of high sampling rate, low electrical noise. It has engineering application value on recording cgn,centional ammunition＇s launching, flighting, landing attitude.
出处
《传感技术学报》
CAS
CSCD
北大核心
2013年第9期1219-1223,共5页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(50905169)
