Aerodynamic design of convertible prop-rotor is a challenging and complex task.Instead of focus on a design condition,prop-rotor are requested to attain good performance in wide range of operating conditions.In present work,to further improve performance of prop-rotor under each operating condition,the concept of variable-pitch proprotor has been proposed.However,a compromising aerodynamic design of prop-rotor is inevitable,due to discrepancy of operating condition.Consequently,a multi-objective optimization is implemented with genetic algorithm.Factors which has significantly influenced on aerodynamic characteristics of prop-rotor are employed as design variable.To avoid expensively computational cost,two theories has been implemented and validated while it able to provide a promising result without high consuming of time.Eventually,several designed individuals within different performance has been analyzed and discussed.Subsequently a calculation of aerodynamic characteristic with hi...

为解决磁流变阻尼器Bouc—Wen模型参数识别方法复杂、不易实现的难题，采用Matlab中的Simulink Design Op—timization工具，在Simulink中搭建Bouc—Wen模型，利用磁流变阻尼器力学特性试验得到的试验数据，对Bouc-Wen模型进行参数识别。结合各参数的物理意义对得到的识别结果进行分析．，确定出阻尼力调控参数，并在Matlab中进行线性拟合，得到其与电流的函数关系。最后搭建考虑阻尼力调控参数的Bouc—Wen仿真模型，用不同幅值和频率的正弦激励进行仿真．并将仿真结果和试验数据进行对比。结果表明：仿真结果和试验数据能够很好的吻合，得到的参数满足要求。