Design and implementation of the LIMU pulse counting system

The sense organs of the launch vehicle control system are of great important in maintaining the launch vehicle attitude stability. Based on the deep analysis of the digital pulse signals from the telemetry interface of laser gyroscope inertial measuring unit (Laser Gyroscope Inertial Measuring Unit-LIMU), the digital pulse signal counting system is designed based on FPGA, and the functions and components of hardware are detailed introduced. At last, the system is simulated in the Libero IDE development environment with VHDL. The results show that the system has the virtue of higher reliability, lower cost, less source requirement, shorter development cycle and has good application value.