Study on Nonlinear Dynamics of Seeker Servo Mechanism Structure

China Mechanical Engineering ›› 2010, Vol. 21 ›› Issue (21): 2521-2526.

Study on Nonlinear Dynamics of Seeker Servo Mechanism Structure

Luo Zirong;Fan Dapeng;Shang Jianzhong;Yang Zheng

National University of Defense Technology,Changsha,410073

Online:2010-11-10 Published:2010-11-12
Supported by:
National Natural Science Foundation of China（No. 50875257）

导引头伺服机构的结构非线性动力学特性研究

国防科学技术大学,长沙,410073

基金资助:
国家自然科学基金资助项目(50875257)
National Natural Science Foundation of China（No. 50875257）

Abstract

Key words: missile seeker, servo mechanism, nonlinear dynamics, angular contact ball bearing

摘要：

基于Hertz接触理论，建立了表达角接触球轴承非线性刚度的二自由度矩阵模型;以导引头伺服机构为对象，建立了导引头陀螺装配结构六自由度非线性运动微分方程;借用经典数值算法的思想，提出了一种求解陀螺装配结构六自由度非线性运动微分方程的四阶Runge-Kutta算法,并对陀螺支架的非线性动力学特性进行了虚拟扫频分析。研究发现，由于角接触球轴承接触刚度的非线性，陀螺支架的谐振峰分布在扫频的所有频率范围（0~500Hz）内，而增大装配预紧力却可以提高陀螺装配结构的谐振频率，减少谐振峰的出现频次，故工程上可通过调节装配预紧力来抑制谐振峰值。

关键词:

导弹导引头, 伺服机构, 非线性动力学, 角接触球轴承

CLC Number:

TB53

LUO Zi-Rong, FAN Da-Feng, CHANG Jian-Zhong, YANG Zheng.

Study on Nonlinear Dynamics of Seeker Servo Mechanism Structure

[J]. China Mechanical Engineering, 2010, 21(21): 2521-2526.

罗自荣, 范大鹏, 尚建忠, 杨政.

导引头伺服机构的结构非线性动力学特性研究

[J]. 中国机械工程, 2010, 21(21): 2521-2526.

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