新型双活塞磁流变液阻尼器及其实验建模  

A Novel Double-piston Magnetorheological Fluid Damper and Experimental Modelling

作　　者：王强[1] 陈照波[1] Mehdi Ahmadian 刘文涛[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001 [2]弗吉尼亚理工大学机械工程系,美国黑堡va24061

出　　处：《液压与气动》2014年第6期17-19,23,共4页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金资助项目(10972065;11372083)

摘　　要：针对轻质空间桁架结构振动半主动控制的需求,提出了一种新型双活塞磁流变液阻尼器,完成了阻尼器的研制。搭建了阻尼器动态特性实验装置,通过实验方法获得了其动力学特性曲线。采用双曲正切模型描述其非线性滞后效应,使用非线性最小二乘法完成了模型参数的优化。结果表明,所建立的模型能够准确描述阻尼器的动力学特性。For the purpose of lightweight space truss structure＇s semi-active vibration control, a novel double-piston magnetorheological fluid damper is proposed. The working principle of this damper is analyzed. One prototype is designed and fabricated according to the analysis results. The damper＇s dynamical properties are obtained by a series of experiments. A hyperbolic tangent model is used to describe the damper＇s nonlinear hysteresis. After the model optimization using the nonlinear least squares method, the relationship between damper force and drive currents is acquired.

关 键 词：磁流变液阻尼器 MR阻尼器 双曲正切模型 非线性最小二乘法 

分 类 号：TH137[机械工程—机械制造及自动化]