考虑非概率不确定性的复合材料壁板颤振可靠性优化方法  

Flutter reliability optimization method of composite panels considering non-probabilistic uncertainties

作　　者：郑宇宁 王一凡 王淑玉 刘晓华 杨鑫鑫 ZHENG Yu‑ning;WANG Yi‑fan;WANG Shu‑yu;LIU Xiao‑hua;YANG Xin‑xin(Science and Technology on Space Physics Laboratory,Beijing 100076,China)

机构地区：[1]空间物理重点实验室,北京100076

出　　处：《振动工程学报》2024年第2期267-275,共9页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(12102055)。

摘　　要：不确定因素普遍存在于气动弹性系统的优化设计中,但传统气动弹性优化设计技术并未考虑材料属性、大气环境、几何尺寸等不确定因素,存在最优化目标对设计参数变化敏感,也可能会发生预期之外的颤振失效。基于此,本文通过对传统优化模型中目标函数的鲁棒性处理和对约束条件的可靠性处理,发展了计及可靠性与鲁棒性的区间优化模型,并将该优化模型应用于气动弹性系统的优化设计中。针对超声速气流下的复合材料层合板和蜂窝夹层板结构进行了考虑不确定性的颤振优化设计,在满足颤振约束指标的条件下,实现了结构减重的设计目标。Recursive Least Squares algorithm is widely adopted in the field of micro-vibration adaptive control because of its sim⁃plicity and speed.Due to the particularity and complexity of the disturbance environment in the micro-vibration active control appli⁃cation,the robustness of the parameter adaptive algorithm used in the micro-vibration control needs to be considered.For the Multi⁃ple-Input Multiple-Output(MIMO)active vibration control system,this paper presents a MIMO robust parameter adaptive algo⁃rithm based on an Infinite Impulse Response(IIR)filter.This robust parameter adaptive algorithm takes advantage of the dead zone and normalization.The deducing process and convergence analysis of the robust parameter adaptive algorithm are illustrated in detail.A 3-DOF real time micro-vibration control experimental platform has been constructed.Comparison are provided with sine disturbance,double sine disturbance and broadband disturbance.Experimental results confirm the feasibility and robust of the pro⁃posed algorithm.

关 键 词：颤振 复合材料壁板 非概率 鲁棒性 优化设计 

分 类 号：V215.34[航空宇航科学与技术—航空宇航推进理论与工程]