小型集成三通道机抖激光陀螺数字式控制电路设计

针对军事和民用工程中亟待解决的捷联式机械抖动激光陀螺惯导的小型化、集成化和高精度问题,提出了一种以单块电路板实现对3个机械抖动激光陀螺进行数字式稳频控制、抖动控制、稳流控制、信号检测及脉冲计数的全功能小型机抖激光陀螺集成控制方案,设计了以DSP和FPGA为核心控制器的陀螺电路。试验结果表明,该集成控制电路能同时实现3路陀螺的自动控制,参数调整灵活方便,控制精确稳定,在实现小型化集成化的同时,提高了激光陀螺的输出精度,为捷联式机械抖动激光陀螺惯导的小型化、集成化和高精度奠定了基础,已在多个项目中获得工程应用,具有较高实用价值。

A Miniaturized Integrated Three-channel Control Circuit for Mechanically Dithered Laser Gyros

The problem of miniaturization, integration and high accuracy of the laser gyro strapdown inertial navigation system is badly to be solved in military and civil engineering. Aiming at solving this problem, a miniaturized integrated control scheme for three mechanically dithered laser gyros is presented to achieve the function of dither control, cavity length control, stable current control, signal detection and pulse counting with one single circuit board, which is designed and implemented based on DSP and FPGA. Experimental results show that the proposed miniaturized integrated control circuit board can accomplish the automatic concurrent control of three gyros both precisely and stably with the advantage of flexible and convenient parameter adjustment. The proposed miniaturized integrated control circuit can improve the precision of the gyros, which lays the foundation for the high precision and miniaturization of the laser gyro strapdown inertial navigation system. It has been applied in many projects and has high practical value.