飞机柔性重量重心测量系统POGO柱优化设计  

Optimal Design for POGO Stick in Multipurpose Measurement System of Aircraft's Weight and Center of Gravity

作　　者：赵文辉[1] 孙超健 郑鹏[1] 李文强[1] 

机构地区：[1]沈阳工业大学机械工程学院,沈阳110870

出　　处：《组合机床与自动化加工技术》2017年第12期46-50,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家科技支撑计划(2015BAH47F02)

摘　　要：POGO柱是飞机柔性重量重心测量系统中的承重部件,其质量直接影响系统的刚度和动态性能。文章基于3维力传感器的测量原理对测量飞机重心的力矩平衡方程做出改进,对测量系统中的POGO柱进行结构设计,运用有限元对POGO柱进行结构强度分析,并运用几何优化方法对其结构进行优化。研究结果表明:由测量Z方向的力的值近似代替实际值改为测量实际的力的大小与实际的力臂,提高了测量精度。对模型进行分析,模型在结构强度,形变量等方面符合任务设计书要求。对模型进行几何优化,分析主体模型各个设计变量对于形变量的影响程度。The main bearing part of the multipurpose measurement system invented for aircraft＇s weight and center of gravity is POGO stick,its quality directly affects the stiffness and dynamic characteristics of the measurement system. moment balance principle inventied for the measurement system specially nowis adjusted for higher accuracy,as force sensor with 3 axis with higher accuracy is utilized. The structural design of the POGO stick model is carried out. The finite element analysis module and geometry optimization module aslo be invoked for 3 D models＇ structural strength and the geometry of models＇ structural. The results showthat： The actual value of the force and it＇s arm measured by force sensor is more precise and aceptable than force value of Z direction which is detected by platform. The structural strength,distortion and geometry of models＇ structural is optimal according to the simulation. The influence degree of each design variable on model＇s distortion was found by software＇s geometry optimization module.

关 键 词：飞机重量重心 POGO柱 几何优化 

分 类 号：TH13[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]