[1]汤海亮,温晶晶,邓 聃,等.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(05):569.[doi:10.14177/j.cnki.32-1397n.2017.41.05.005]
 Tang Hailiang,Wen Jingjing,Deng Dan,et al.Effect of friction resistance moment on measurement accuracy ofpolar moment of inertia of projectile by torsion pendulum method[J].Journal of Nanjing University of Science and Technology,2017,41(05):569.[doi:10.14177/j.cnki.32-1397n.2017.41.05.005]
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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()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
41卷
期数:
2017年05期
页码:
569
栏目:
出版日期:
2017-10-31

文章信息/Info

Title:
Effect of friction resistance moment on measurement accuracy ofpolar moment of inertia of projectile by torsion pendulum method
文章编号:
1005-9830(2017)05-0569-05
作者:
汤海亮12温晶晶2邓 聃2吴 斌2
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
Author(s):
Tang Hailiang12Wen Jingjing2Deng Dan2Wu Bin2
1.Xi’an Guide Technology Co LTD,Xi’an 710065,China; 2.School of Astronautics,Northwestern Polytechnical University,Xi’an 710072,China
关键词:
弹箭 极转动惯量 卧式扭摆法 摩擦阻力矩
Keywords:
projectiles polar moment of inertia torsion pendulum method friction resistance moment
分类号:
TJ760.6
DOI:
10.14177/j.cnki.32-1397n.2017.41.05.005
摘要:
针对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,对测量方法进行了修正。给出了摩擦阻力矩的计算方法,对摩擦阻力矩进行了近似常数化处理,推导出考虑摩擦阻力矩影响的扭摆系统运动微分方程,在此基础上分析了摩擦阻力矩对摆动周期、摆动次数、系统静平衡位置的影响。通过对运动微分方程进行数值求解,定性分析了光电传感器位于两静平衡位置之间不同位置时周期测量的变化趋势,进而优化了光电传感器的安装位置。算例结果表明,摩擦阻力矩对弹箭极转动惯量测量精度的影响不可忽略,采用该文修正方法可将卧式扭摆法对弹箭极转动惯量的测量误差降低一个数量级。
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.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-07-26 修回日期:2016-11-27
作者简介:汤海亮(1989-),男,硕士生,主要研究方向:飞行器设计、质量特性测试设备研制,E-mail:455161105@qq.com; 通讯作者:吴斌(1965-),男,博士,副教授,主要研究方向:飞行器设计、质量特性测试设备研制,E-mail:1915321940@qq.com。
引文格式:汤海亮,温晶晶,邓聃,等.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,2017,41(5):569-573.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2017-09-30