机载光电稳定平台框架结构工程分析  

Engineering analysis of airborne optoelectronic platform frame structure

作　　者：甘至宏[1] 张葆[1] 撖芃芃[1,2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院研究生院,北京100039

出　　处：《光学精密工程》2008年第12期2441-2446,共6页Optics and Precision Engineering

基　　金：国防科技预研基金资助项目(No.1040603)

摘　　要：对机载光电稳定平台结构设计特性进行了阐述,说明机械谐振频率对设备性能的重要性,指出加支撑筋和减重孔是提高机械谐振频率的有效手段。此外,在结构布局上尽量紧凑,使质量大的零件靠近回转轴线以减小转动惯量,也有利于机械谐振频率的提高。以某光电稳定平台框架基座为例,通过计算分析,得到直观的图示结果,能较全面地看到在一定外力作用下,零件中应力、应变、变形、安全系数的分布情况,据此找出薄弱环节和冗余部分,有的放矢地改进设计。实例结果验证了分析的可指导性和重要性。The structural design characteristics of airborne optoelectronic steady platform are e ted, and the importance of mechanical resonance frequency to equipment performance is exp aboraained. Then, it is pointed out that adding support rod and bore can effectively raise the mechanical resonance frequency. Furthermore, the structural configuration is designed as compact as possible to make the big mass components approach to the rotation axis to reduce the rotor inertia, which offers a advantage in the enhancement of mechanical resonance. A optoelectronic steady platform frame is taken as the example under certain external force, the direct-viewing graphical representation result can be obtained through the computation analysis, so that the distributed situations of the stress, strain, distortion and safety coefficient for components can be given comprehensively. According to the weak link and the redundant part, the design is improved,and the example results show the guidance and importance of the engineering analysis.

关 键 词：机载平台 工程分析 机械谐振频率 

分 类 号：V243.5[航空宇航科学与技术—飞行器设计]