FPGA在激光陀螺指北仪中的应用

Application of FPGA in north-finder based on laser gyro

激光陀螺指北仪中有较多的数字信号需要处理,包括对激光陀螺的计数、对光栅编码器的计数、驱动步进电机以及对部分电路进行状态检测等。用一片FPGA实现这些功能,不但减小了系统的体积,而且由于利用FPGA对激光陀螺进行脉冲细分而提高了精度。

In a north-finder based on laser gym, many digital signals need to be processed, such as counting of laser gym, counting of angular encoder, driving of step motor, monitoring of the circuits and so on. The volume of the north-finder is reduced by integrating these functions in one FPGA chip, and the performance of north-finder is improved because of the subdivision of laser gyro pulse with FPGA. The working principle and structure of the north-finder of laser gym are presented. The functions and realization of FPGA are described with the experimental result and the conclusion.