摘要
出了一种旋转式多级磁流阻尼器 ,将阻尼器的输出力分为 7个等级 ,并基于试验数据建立了该阻尼器的简化模型。为了将磁阻尼器应用于机翼操纵面的振动抑制 ,建立了包含阻尼器的机翼 -操纵面三自由度气动弹性方程 ,并设计了基于输出反馈的次最优控制。风洞试验结果表明 ,多级磁流变阻尼器能够较好地抑制操纵面的振动 ,并将系统的颤振临界速度提高了 2 6 .2 %。
Semi-active control is a relatively n ew topic in the flutter suppression of wing-aileron systems and depends greatly on the successful combined design of controllers and actuators, such as the mag neto-rheological (MR) dampers. This study starts with a novel design of a rotar y stepped MR damper of shear mode, which can provide seven levels of torque by a lter ing the magnetic field area inside. Then, it specifies the problem of flutter co nt rol for a 3DOF wing model with such a stepped MR damper installed in the positio n of aileron rotation axis. The study gives the numerical simulations of the flu tter suppression based on several control strategies. The wind tunnel test demon strates the critical flutter speed was increased by 26.2%.
出处
《振动工程学报》
EI
CSCD
北大核心
2005年第1期14-18,共5页
Journal of Vibration Engineering
基金
国家"8 6 3"计划项目资助 (70 5 - 2 .3)
