棱镜激光陀螺数字稳光强稳腔长控制系统

A Digital Path Length and Light Intensity Control System for Prism Laser Gyro

棱镜式激光陀螺的稳频原理不同于反射镜式激光陀螺,为了克服棱镜式激光陀螺原模拟控制系统的缺点,提出了一种棱镜式激光陀螺数字化稳光强稳腔长控制系统的方案,在理论分析的基础上,设计并制作了基于FPGA与单片机的数字式控制电路,同时编写了相应的控制程序。仿真和实验证明该数字式稳光强稳腔长控制方案能很好满足激光陀螺光强和腔长控制要求,且优于传统的模拟控制方式。最后指出了实现棱镜激光陀螺数字化控制的优势,如体积小、稳定性高等。

The principle of frequency stabilization for prism laser gyro differs from that of reflector laser gyro. In order to conquer the limitations of analog circuit control system of prism laser gyro, a digital circuit for path length and light intensity control of the laser including the interrelated software was designed and developed. The results of simulation and experiment show that the digital method is feasible and better than the analog one. At last, the advantages such as less volume, higher stability of digital control method for the laser were pointed out.