水平扭摆冲量测量装置是研究激光与工质烧蚀冲量耦合的有效手段。针对测量过程易受干扰的特点, 基于冲量瞬间作用模型, 通过系统参数标定误差和冲量误差与噪信比关系, 采用蒙特卡洛数值仿真方法, 提出了测量噪声影响系统参数标定和冲量测量误差的分析方法。所提出的方法可应用于分析测量噪声对系统参数标定误差、冲量测量误差的影响规律研究, 为微小冲量测量误差和结构设计提供依据。

Horizontal torsion balance impulse device is an effective approach to study the impulse couple produced by laser and working materials ablation. The measuring process was susceptible to the noise so that the analytical method for the way how the noise impacted on the system parameters calibration error and the impulse measuring error was put forward. The method was using the Monte Carlo number simulation method according to the relationship between the system parameters calibration error and the signal-to-noise ratio and the relationship between the impulse measuring error and the signal-to-noise ratio based on impulse instantaneous effect. This method can be used to analyze the influence characteristics how the noise impacts on the system parameters calibration error and the impulse measuring error so as to provide practical suggestions for the error analysis and the structure design.