基于线角耦合分析的大型舱段角振动传递特性试验方法研究  

Research on Experiment Method for Angle Transfer Characteristics of Large Cabin based on Translation-rotating Coupling Analysis

作　　者：张鹏飞[1] 丁镇军[1] 胡亚冰 陈贵龄 苏华昌[1] Zhang Peng-fei;Ding Zhen-jun;Hu Ya-bing;Chen Gui-ling;Su Hua-chang(Beijing Institute of Structure and Environment Engineering,Beijing,100076)

机构地区：[1]北京强度环境研究所,北京100076

出　　处：《导弹与航天运载技术》2021年第5期150-154,共5页Missiles and Space Vehicles

摘　　要：火箭捷联惯组的角振动传递特性是控制系统设计的重要参数,通过试验获取角振动传递特性是保证姿控系统稳定性的重要手段。大型舱段的角振动传递特性试验难度高于单惯组情况,需要研究在现有设备能力的基础上提高试验结果精度的方法。提出了基于线角耦合分析的角振动传递特性分析方法,分析了该方法的适用范围。设计梁模型算例对理论进行了验证。将该方法应用在了运载火箭仪器舱惯组支架角振动传递特性试验中,对不同试验方法得到的角振动传递特性进行了对比。基于线角耦合分析的试验方法可以提供更加准确的传递特性。研究结论可为大型舱段角振动传递特性试验的实施提供参考。Angle transfer characteristics of Inertial Measurement Unit(IMU)of launch vehicle is an important parameter in the design of control system.Obtaining the angle transfer characteristics through experiments is an important means to ensure the stability of attitude control system.It is more difficult to test the angular transfer characteristics of large cabin than that of single IMU.It is necessary to study the method to improve the accuracy of test result on the basis of existing equipment capacity.An analysis method of angle transfer characteristics based on translation-rotating coupling analysis is proposed,and the application scope of this method is analyzed.The theory is validated by an example of beam model.The method is applied to angle transfer characteristics experiment of the IMU bracket in the instrument cabin of launch vehicle,and angle transfer characteristics results obtained by different methods are compared.The test method based on translation-rotating coupling analysis can provide more accurate transfer characteristics.The research conclusions can provide reference for the implementation of angle transfer characteristics experiment of large-scale cabin.

关 键 词：线角耦合 角振动传递特性 试验方法 

分 类 号：V414.1[航空宇航科学与技术—航空宇航推进理论与工程]