基于高速摄影和微惯性姿态测量的人-枪运动特性测试研究

自动武器射击时的人-枪运动特性是武器人机工效评价和人-枪系统动力学建模的重要依据。为了获得某无托型自动步枪射击时的人-枪运动特性以及定量对人-枪运动参数作出估计,探索了高速摄影与MTI惯性运动测量相结合测量人-枪运动特性的新方法。采用高速摄影机从侧面获得人-枪系统运动特征点的运动信息,经过相关处理获得射击过程中步枪前后及俯仰的运动特征,同时运用MTI惯性测量系统测得步枪枪管轴线三维角运动参数。结合射击时自动机的实际运动情况,通过对高速摄影与惯性姿态测得的俯仰角运动结果进行对比与分析,验证了高速摄影与MTI惯性运动测量结果的可信性。研究结果表明,两种方法相互补充能更全面地反映人-枪运动特性,为人-枪运动参数的获取提供了新的测试手段。

Measurement of Motion Characteristics on Human-rifle System Based on the Combination of Micro Inertial Motion Tracker Instrument and High-speed Photography

The motion parameters of human-rifle system are the important basis of weapons ergonomic evaluation and human-rifle system dynamics modeling in the process of automatic weapon shooting. In order to obtain the motion characteristics of the human-rifle system and quantitatively estimate its motion parameters during shooting of a bullpup rifle, a new method is explored for measuring the human-rifle system, which is a high-speed photography combined with inertial measurement of motion tracker instrument（MTI）. The proposed method is to use the motion information of motion feature points of human-rifle system taken by a high-speed camera to obtain the motion law of the human-rifle system in the pitching through the correlation processing, and the muzzle response of the rifle is measured using MTI inertial measuring instrument at the same time. The motion results at the pitching angles measured by high-speed photography and MTI are compared and analyzed. The experimental results show that the results measured using high speed photography and MTI are believable.