摘要
基于空间AVEN驱动机构的运动学方程,利用全微分理论建立了该机构运动精度分析的数学模型,研究了输入误差、构件加工误差、运动副间隙对机构输出的矢量角和喷口面积的影响;基于ANSYS软件,分析了主要构件收敛调节片、扩张调节片和拉杆在高温高压下的变形对机构输出的矢量角和喷口面积的影响,最后对各影响因素进行综合分析。得出机构的定位参数误差、A9转向环转动角误差及温固耦合作用是影响AVEN驱动机构运动精度的主要因素。
The kinematic precision of the driving machine of an Axial-symmetric Vectoring Exhaust Nozzte （AVEN） is studied in this paper. Based on the space kinematic equation of AVEN driving machine, using the theory of the differentiation method of mechanism precision analysis and probability, a precision analysis model of AVEN is developed. Then, the effects of input error, mac error of component, clearances of kinematic pairs on the accuracy of AVEN machine are studied, and the effects of the deformation of the primary components such as converging slice, diverging slice, and draught pole on the output vector angle and nozzle area are analyzed by ANSYS when they endure high temperature and high pressure. Finally, all effect factors are synthetically analyzed. The results show that the orientation parameter error, the angle error of A9 and the coupling of temperature and structure are the primary factors which affect the kinematic precision of AVEN.
出处
《机械科学与技术》
CSCD
北大核心
2008年第6期752-756,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
航空科学基金项目(2006ZB53016)
陕西省自然科学基础研究计划项目(2005E228)资助
关键词
矢量喷管
驱动机构
温固耦合
精度分析
axial-symmetric vectoring exhaust nozzle （AVEN）
driving machine
the coupling of temperature and structure
precision analysis
