Research On The Technology Of Ballistic Synchronous Tracking Reflector System

In the process of weapon research, explosion, combustion, and armor pierce, the flying attitude of the projectile in external ballistic needed to be measured by mean of the high-speed photography. It has become an indispensable means in the field of weapon range test. Using the high-speed photography equipment and synchronized photography equipment carries on the track and the analysis to the flying attitude and the speed in the exterior ballistics is one of the hottest spot in the research content. Aiming at photography continuous record technology of exterior ballistic, the synchronous tracking reflector system that made up of the reflector and high-speed CCD camera is studied, and the flight projectile trajectory on the video in a continuous record is achieved in this thesis.In present thesis, a mathematical model of track rotating mirror is established, the overall program, the structure and the working principle of reflector vehicle tracking system are investigated in detail. The key parameters of the reflector is calculated such as the location parameters of electronic components, scan rate of reflector, the most discrete intermission of tracking speed and the initiative tracing position. At last, the kinematics relationship between the rotating mirror speed and the position has been obtained.The servo motor-driven rotating mirror control system was used for real-time tracking of the projectile. The permanent magnet synchronous motor was chose and the PI control method was adopted. The system can achieve high precision, high dynamic performance, a wide speed range of positioning control and have a well robustness. Therefore, the system meets the high control precision and high reliability requirements.The motor emulational control model of the synchronous tracking reflector system is established by the SIMULINK. The tracking capability is analyzed, the curve of motor real-time response and tracking ability in the ideal and load condition is compared. Through the method of optoelectronic scanning photography, the ballistics synchronous tracking system has been verified. In the condition of high-speed CCD camera frame rate is 38400fps or more, the effective tracking range is 90°, the track response time is milliseconds level and the flight speed of projectile is 1600m/s.