一种新型高旋弹体滚转角测量系统

利用常规方法直接测量高速旋转弹体的滚转角测量精度较低,针对该问题,提出了一种基于微惯性测量组合(MIMU)与光电编码器综合测试的弹体滚转角测量系统.通过MIMU实时测量半捷联惯性测量平台内筒的姿态信息,利用光电编码器测量半捷联惯性测量平台内筒与弹体之间的相对转角,采用FPGA作为主控芯片来实现弹载环境下光电编码器输出脉冲的抗抖动干扰设计,结合MIMU数据,实现了弹体滚转角的准确测量.经试验验证,该系统能够完整有效地记录弹体滚转角信息,测量精度稳定在3°以内.

A new measurement system for the rolling angle of the high - rotating projectile

In order to solve that the measurement precision of the high-rotating projectile roll angle is low by the tradi-tional measurement method,the measurement system of a projectile rolling angle is designed,which is based on the combination of the micro inertia measurement(MIMU)and the photoelectric encoder. In the system,the MIMU real-time measurement the attitude information of the inner tube of the semi-strapdown inertial measurement platform,and the photoelectric encoder is used to measure the relative angle between the inner cylinder and the projectile of the semi-strap inertial measurement platform. FPGA is used as the master chip to complete the anti-jitter design of the photoelectric encoder output pulse in the missile-borne environment,and the system implements the accurate measure-ment of the roll angle of the projectile with the MIMU data. Experimental results show that the system can effectively record the missile roll angle information and the measurement accuracy is stable within 3°.