精密同轴回转式测量机构模态分析及优化  

Modal analysis and optimal design for the precision coaxial rotary measuring mechanism

作　　者：金印[1] 杜乐普[1,2] 石宏[1] 刘明明[1] 

机构地区：[1]沈阳航空航天大学航空宇航工程学部(院),沈阳110136 [2]空军石家庄飞行学院第一训练旅,河北石家庄050081

出　　处：《沈阳航空航天大学学报》2014年第5期34-38,共5页Journal of Shenyang Aerospace University

摘　　要：在完成对某同轴回转式测量系统中回转装置的初期设计基础上,对其中回转装置进行模态分析,结果显示回转装置第一阶模态频率偏低,为避免其与检测现场激振频率发生共振,并提高检测精度,提出采用Workbench中灵敏度分析的方法,对回转装置结构进行优化,得到了回转装置的最佳设计方案。研究结果对提高系统精度,防止共振的发生等方面具有重要意义,为进一步的设计改进工作提供很好的理论支持。The paper based on the initial design of the swing device in a coaxial rotary measurement system, and the result of the modal analysis on the swing device shows that the first-order mode frequency of the swing device was low. In order to avoid the resonance between the swing device and the excitation frequency of detection field,and improving the accuracy of detection,we optimized the construction of the swing device by means of sensitivity analysis in the Workbench. In this way we obtained the best design project of the swing device. The research has important implications for improving the accuracy of detection and preventing resonances,and gives well theoretical support for the further design improvements.

关 键 词：回转体 模态分析 优化设计 灵敏度分析 

分 类 号：TH122[机械工程—机械设计及理论]