国防科技大学学报2017，Vol.39Issue(2)：152-157,6.DOI:10.11887/j.cn.201702023
环境温度变化对导引头伺服机构摩擦力矩影响分析及实验研究
Impact analysis and experimental research on friction torque of seeker servo mechanism under changing temperature
摘要
Abstract
A friction torque analysis model of seeker servo mechanism including thermal coupling deformation was established.The influence of changing environment temperature on geometry parameters and friction torque of angular contact bearing was mainly studied.Taking mirror-type seeker as an example, its friction torque was calculated and analyzed by using the proposed calculation model.Results show that the grease viscosity is the main cause for the dramatic rise of the friction torque with the decreasing of the temperature, while the thermal deformation has a small impact on it.Based on the electrical method, an experimental system for friction torque measurement was established.And a rapid temperature experiment chamber was used to simulate environment temperature.Theoretical calculation results and experimental results were compared and analyzed.Experiments prove that the results of friction torque experiment agree with the theoretical model calculation.关键词
导引头伺服机构/摩擦力矩/环境温度/角接触轴承/热致耦合变形Key words
seeker servo mechanism/friction torque/environment temperature/angular contact bearing/thermal coupling deformation分类
信息技术与安全科学引用本文复制引用
于乃辉,李欣,尚建忠,曹玉君..环境温度变化对导引头伺服机构摩擦力矩影响分析及实验研究[J].国防科技大学学报,2017,39(2):152-157,6.基金项目
国家自然科学基金资助项目(51675527) （51675527）
