手枪射击过程中射手动态响应特性测量与分析

为研究手枪单手立姿无依托连续射击过程中射手的响应特性,采用三维运动捕捉系统和足底压力测试系统,测量了连续射击过程人-枪的运动轨迹及其足底压力特性。试验结果表明:手枪连续射击过程中,手枪运动与足底受力/压力中心位置变化具有密切的关联性;对于立姿无依托射击,射手先后经历了被动响应阶段和主动响应阶段,对于54式手枪射击时射手进入主动响应阶段需要250 ms(标准偏差62.9 ms);随着连续射击次数的增加,射手对身体平衡能力的控制降低,导致其控枪能力减弱。分析结果同时表明:采用该测试手段对射击响应特性研究是可行的,进一步揭示了手枪射击过程中射手的响应特性,对人-枪系统运动规律分析和人-枪系统动力学模型的建立,具有参考价值。

Test and Analysis of Dynamic Response Characteristics of Pistol Shooter

The purpose of the study is to investigate the response characteristics of pistol shooter who stands to continuously shoot without support. A three-dimensional motion capture system and a plantar pressure test system are used to get the shooter-pistol motion trajectory and plantar pressure. The results show that the pistol motionis closely related with the foot force/pressure center position during the continuous shooting.A shooter should go through the passive and active responses when he fires in standing posture without support. A shooter takes 250 ms (SD=62.9 ms) to make an active response. Weak postural control occurrs with the increase in consecutive shots, which results in reduced gun control ability.The analysis results show that the testing systems can be used to analyze the response characteristics of shooter, provide a new way to study the discipline of human-pistol motion and develop the human-pistol dynamics model.