[1]周亚东,董萼良,吴邵庆,等.惯性导航平台角振动抑制技术[J].东南大学学报(自然科学版),2013,43(1):60-64.[doi:10.3969/j.issn.1001-0505.2013.01.012]
 Zhou Yadong,Dong Eliang,Wu Shaoqing,et al.Restricting method for angular vibration of inertial navigation platform[J].Journal of Southeast University (Natural Science Edition),2013,43(1):60-64.[doi:10.3969/j.issn.1001-0505.2013.01.012]
点击复制

惯性导航平台角振动抑制技术()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第1期
页码:
60-64
栏目:
数学、物理学、力学
出版日期:
2013-01-20

文章信息/Info

Title:
Restricting method for angular vibration of inertial navigation platform
作者:
周亚东董萼良吴邵庆韩晓林张鹏费庆国
东南大学土木工程学院, 南京 210096; 东南大学江苏省工程力学分析重点实验室, 南京 210096
Author(s):
Zhou Yadong Dong Eliang Wu Shaoqing Han Xiaolin Zhang Peng Fei Qingguo
School of Civil Engineering, Southeast University, Nanjing 210096, China
Jiangsu Key Laboratory of Engineering Mechanics, Southeast University, Nanjing 210096, China
关键词:
惯性导航平台 角振动 减振 抗扭软轴 角刚度
Keywords:
inertial navigation platform angular vibration vibration reduction torsion-resistant flexible shaft angular stiffness
分类号:
O328;V249.322
DOI:
10.3969/j.issn.1001-0505.2013.01.012
摘要:
为了抑制惯性导航平台的角振动,基于隔振理论,建立了具有弹性支承的六自由度刚体在基座位移激励下的振动微分方程.分析了振动方程解耦的参数条件;依据惯导平台减振系统线振动固有频率尽可能低、角振动固有频率尽可能高的设计原则,利用抗扭软轴来增加系统的角刚度,并采用有限元模型进行了数值仿真.模态分析结果表明,设置抗扭软轴后,角振动模态频率提高至无抗扭软轴时的2.3倍左右,且对线振动模态频率不产生影响.频率响应分析结果表明,抗扭软轴能够提高平台角振动固有频率,表征角振动的位移频率响应共振频率由27 Hz提升至64 Hz左右,并且角刚度的增大使角偏移降低了一个数量级.由此表明,采用抗扭软轴来增大惯导平台减振系统角刚度、抑制角振动是有效可行的.
Abstract:
To reduce the angular vibration of inertial navigation platform, an oscillatory differential equation for six degrees of freedom elastically-supported rigid body with base displacement excitation was established based on the theory of vibration isolation. The condition of equation decouple was analyzed. According to the principle that the translational vibration frequency should be as low as possible and the angular vibration frequency should be as high as possible, torsion-resistant flexible shaft was adopted to improve the angular stiffness of the inertial navigation platform system. Numerical simulation was carried out by finite element model. The results of modal analysis show that the modal frequency of angular vibration with the fixed torsion-resistant flexible shaft is about 2.3 times that of the state without torsion-resistant flexible shaft. And the torsion-resistant flexible shaft has no effect on the modes of translational vibration. The frequency response analysis results show that the torsion-resistant flexible shaft can improve the angular resonant frequency. The resonant frequency of displacement frequency response which can mirror the angular vibration is improved from about 27 to 64 Hz. And the angular deviation is reduced by an order of magnitude with the increase of the angular stiffness. This indicates that torsion-resistant flexible shaft is effective in augmenting angular stiffness and restricting angular vibration.

参考文献/References:

[1] 苏广中, 叶桦. 惯性导航系统训练模拟器的研制[J]. 东南大学学报:自然科学版, 2004, 34(S1): 92-95.
  Su Guangzhong, Ye Hua. Development of inertial navigation training simulator[J]. Journal of Southeast University: Natural Science Edition, 2004, 34(S1): 92-95.(in Chinese)
[2] 杨朋军, 靳长权, 王佳民. 惯性平台台体组件动态特性分析[J]. 机械设计, 2004, 21(10): 54-56.
  Yang Pengjun, Jin Changquan, Wang Jiamin. Dynamic characteristic analysis for platform body component of inertial platform[J]. Journal of Machine Design, 2004, 21(10): 54-56.(in Chinese)
[3] 张志鑫, 张大伟. 捷联惯组减振系统角振动、线振动共振频率理论分析[J]. 中国惯性技术学报, 2009, 17(6): 654-657.
  Zhang Zhixin, Zhang Dawei. Theory analysis on resonance frequencies of linear vibration and torsional vibration of strapdown IMU damping system[J]. Journal ofChinese Inertial Technology, 2009, 17(6): 654-657.(in Chinese)
[4] 葛祖德, 姚起杭. 航空用新型减振器[J]. 应用力学学报, 2001, 18(S1): 110-113.
  Ge Zude, Yao Qihang. The vibration isolator with high damping used in aircraft[J]. Chinese Journal of Applied Mechanics, 2001, 18(S1): 110-113.(in Chinese)
[5] 吕振华, 范让林. 动力总成-悬置系统振动解耦设计方法[J]. 机械工程学报, 2005, 41(4): 49-54.
  Lü Zhenhua, Fan Ranglin. Design method for vibration uncoupling of powerplant-mounting system[J]. Chinese Journal of Mechanical Engineering, 2005, 41(4): 49-54.(in Chinese)
[6] Cyril M Harris, Allan G Piersol. Shock and vibration handbook[M]. 5th ed. New York: McGraw-Hill, 2002.
[7] 丁文镜. 减振理论[M]. 北京:清华大学出版社, 1988: 15-18.
[8] Tuo Zhouhui, Hu Dewen, Li Ruhua, et al. Damping design of strapdown inertial navigation system[J]. Journal of Chinese Inertial Technology, 2009, 17(6): 648-650.
[9] 丁言勇. 软轴在飞行器上的应用[J]. 航空制造技术, 2010(19): 102-103.
  Ding Yanyong. Application of soft shaft in aircraft[J]. Aeronautical Manufacturing Technology, 2010(19): 102-103.(in Chinese)
[10] 机械设计手册编委会. 机械设计手册:第19篇[M]. 3版. 北京: 机械工业出版社, 2009: 3-42.

备注/Memo

备注/Memo:
作者简介: 周亚东(1987—),男,博士生;费庆国(联系人),男,博士,副教授,博士生导师,qgfei@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(10902024)、教育部新世纪优秀人才支持计划资助项目(NCET-11-0086)、江苏省自然科学基金资助项目(BK2010397)、航空科学基金资助项目(20090869009).
引文格式: 周亚东,董萼良,吴邵庆,等.惯性导航平台角振动抑制技术[J].东南大学学报:自然科学版,2013,43(1):60-64. [doi:10.3969/j.issn.1001-0505.2013.01.012]
更新日期/Last Update: 2013-01-20