摘要
根据机载目标探测系统的地面试验和性能评价需要,开展了大型五轴转台的总体机械结构设计,并利用Inventor软件进行三维实体建模。针对该转台机械结构尺寸大、载荷重、精度要求高的特点,利用有限元分析软件,建立了转台框架结构的有限元模型,并进行了静力计算、模态分析。在分析计算的基础上,对台体关键的支撑轴系、框架结构进行了优化,使其全面达到了10量级的总体结构精度要求,模态特性的改善也为宽频带伺服系统的实现提供了基础保证。
According to the requirements of ground experiments and performance measurements of the onboard target observationsystem, the mechanical structure of the huge five-axis simulator is designed, and the digital prototype is modeled by the Inventor software.Considering the large size of mechanical structure, heavy load and high precision, the statics computing and modal analysis of theestablished finite element model of shafting and frame are carried out. Based on the calculation and analysis, the key support shafting andframe construction are optimized to fulfill the mechanical precision of ten second. In addition, the improvement of the modal characteristicshas provided the foundation for the reality of the wideband servo system.
作者
李碧政
LI Bi-zheng(AVIC Beijing Precision Engineering for Aircraft Industry,Beijing 100076,China)
出处
《内燃机与配件》
2018年第9期1-5,共5页
Internal Combustion Engine & Parts
关键词
大型五轴仿真转台
机械结构
轴系精度
有限元分析
huge five-axis simulator
mechanical structure
shafting precision
finite element analysis
