南京理工大学学报（自然科学版）2017，Vol.41Issue(5)：569-573,5.DOI:10.14177/j.cnki.32-1397n.2017.41.05.005
摩擦阻力矩对卧式扭摆法测量弹箭极转动惯量精度的影响
Effect of friction resistance moment on measurement accuracy of polar moment of inertia of projectile by torsion pendulum method
汤海亮 1温晶晶 2邓聃 2吴斌2
作者信息
- 1. 西安导引科技有限责任公司,陕西 西安710065
- 2. 西北工业大学 航天学院,陕西 西安710072
- 折叠
摘要
Abstract
In view of the effect of the friction resistance moment on the measurement accuracy of polar moment of inertia of projectiles by the torsion pendulum method,the measurement method is modified. The calculation method and the approximate constant processing of the friction resistance moment are given in details, then the motion differential equation is deduced in consideration of the effect of the friction resistance moment. Then the influences of the friction resistance moment on the pendulum period, the pendulum count and the static equilibrium position are analyzed. By presenting the numerical solution of the motion differential equation, the qualitative analysis of trend of the measurement period is conducted when the photoelectric sensor is located at different positions between the two static equilibrium positions,and the installation location of the photoelectric sensor is optimized. The calculation result of example shows that the effect of the friction resistance moment on the measurement accuracy of the polar moment of inertia of projectiles by the torsion pendulum method can not be ignored,and its measurement error decreases by one order magnitude when using the method in this paper.关键词
弹箭/极转动惯量/卧式扭摆法/摩擦阻力矩Key words
projectiles/polar moment of inertia/torsion pendulum method/friction resistance moment分类
军事科技引用本文复制引用
汤海亮,温晶晶,邓聃,吴斌..摩擦阻力矩对卧式扭摆法测量弹箭极转动惯量精度的影响[J].南京理工大学学报（自然科学版）,2017,41(5):569-573,5.
