摘要
为了准确分析加速度传感器的安装误差及横轴灵敏度对射程修正的影响,以六自由度刚体外弹道模型为基础,建立了弹丸轴向加速度理论模型,并通过公式推导及简化得到弹丸轴向加速度的输出误差公式,该项误差较大,与弹丸转速的平方近似成正比,比例系数C的获取是补偿该项误差的关键。仿真分析得到了简化模型与实际理论模型的误差曲线,验证了简化模型的正确性,研究结果为弹丸轴向加速度的精确测量提供了相应的理论基础。
In order to accurately analyze the effect of installation error and transverse sensitivity on measure value for the acceleration sensor,theoretical model for the axial acceleration of projectile was established based on the rigid trajectory model of six degrees of freedom.By deducing and simplifying formulae,the theoretical error of the axial acceleration of projectile was obtained.The error is large,and the error is approximately proportional to the square of rotating speed of projectile.It is the key for compensating the error to obtain the scale factor C.By simulation,the error curves of simplified model and actual model were obtained,and the correctness of the simplified model was verified.The study provides corresponding theoretical foundation for accurately measuring the axial acceleration of projectile.
出处
《弹道学报》
CSCD
北大核心
2013年第4期48-52,共5页
Journal of Ballistics
基金
总装预研基金项目
关键词
弹道修正
轴向加速度
误差分析
trajectory correction
axial acceleration
error analysis
