基于FPGA反射式激光双速测量系统的设计与实现

摘要

Rotating the object in flight,can reduce the movement of objects in the process of air resistance,increasing movement stability,improve emission efficiency.In some of the transmission system,the projectile in the process of movement,the rotation will occur.By measuring the rotation of the projectile speed and movement speed,can better understand the projectile motion law,regulating the movement behavior,get instant environmental information.It presents a high-sensitivity reflective speed system,the system uses a high-speed response speed digital laser sensor as the measuring device,the use of FPGA programming and control operations,has the advantage of anti-low-frequency electromagnetic interference.Application of the speed measuring system can simultaneously measure the electromagnetic launch system in projectile at the exit of horizontal motion and rotation speed.%物体在运动时旋转,可以减小物体运动过程中的空气阻力,增加运动运动稳定性,提高发射效率.而在一些发射系统中,弹丸在运动的过程中,也会发生旋转.通过测量弹丸的旋转速度和运动速度,可以更好的了解弹丸运动规律、调控运动行为,获取即时环境信息.文中提出了一种高灵敏度反射式测速系统,该测速系统采用高速响应数字激光传感器作为测量器件,采用FPGA编程进行控制和运算,具有抗低频电磁干扰的优点.应用该测速系统可以同时测量电磁发射系统中弹丸在出口处的水平运动速度和旋转速度.