高线加速度下电动振动台机电耦合特性的研究  

Study on Electromechanical Coupling Characteristics of Electric Vibration Table in High-Translational-Acceleration

作　　者：沈润杰[1] 何闻[1] 陈子辰[1] 

机构地区：[1]浙江大学生产工程研究所,杭州310027

出　　处：《振动工程学报》2001年第4期429-432,共4页Journal of Vibration Engineering

基　　金：教育部博士点基金资助 (编号 :19990 335 34 )

摘　　要：利用机电分析动力学方法 ,对高线加速度下热与振动复合环境试验的子系统——离心机 -振动台进行建模和仿真分析。仿真结果表明 ,在离心力场下 ,电动振动台动圈平衡位置及系统固有频率发生变化 ,直接影响振动台正常工作 ;机电耦合非线性项的存在 ,使振动台输出波形发生失真。A coupling model is built based on a method of dynamics of electromechanical systems and similation analysis which concerns the subsystem of thermal vibration environment in high translational acceleration centrifugal rig with vibration table. The results of simulation indicate that the equilibrium position of armature and nature frequency of the electric vibration table would change in the centrifugal force field, which will influence the normal work of the vibration table directly. And the output waveform of vibration table could be distorted for the nonlinear factors of electromechanical coupling. Finally serveral ways are discussed to tackle the problems.

关 键 词：电动振动台 机电耦合特性 高线加速度 复合环境试验 飞行器 

分 类 号：V216.57[航空宇航科学与技术—航空宇航推进理论与工程]