考虑摩擦的二级摆激振器动力学分析  

Dynamic Analysis of Double Pendulum Vibrator with Friction

作　　者：陈鹏[1] 杨小兰[1,2] 王治金[1] 张娜[1] 

机构地区：[1]南京工程学院机械工程学院,江苏南京211167 [2]黄河科技学院机械工程学院,河南郑州450015

出　　处：《南京工程学院学报（自然科学版）》2016年第1期8-12,共5页Journal of Nanjing Institute of Technology(Natural Science Edition)

基　　金：国家自然科学基金项目(51375221);河南省重点科技攻关项目(142102210138);郑州市科技攻关项目(20130797);江苏省大学生创新创业训练计划重点项目(201511276005Z)

摘　　要：二级摆激振器是具有不确定运动的两自由度激振器,在变频调速电机驱动下,二级摆激振器能够产生类似混沌激振器所产生的激振力;运用拉格朗日方程建立考虑转动摩擦的二级摆激振器动力学微分方程;基于Matlab软件仿真分析在变速控制下二级摆激振器的动力学响应,结果显示二级摆激振器能够输出在宽频带上分布的激振力,产生瞬时增幅达到25%的最大激振力,输出瞬时高振强.A double pendulum vibration exciter is a vibration exciter with two degree of freedom. Driven by a frequency conversion motor, it can produce vibration force, similar to that produced by a chaotic vibrator. Lagrange equation is then employed to build a dynamic differential equation of double pendulum vibrators, which takes rotating friction into account.The dynamic responses of this exciter under the control of variable speed is simulated and analyzed with Matlab. The results indicate that double pendulum vibrators can output vibration force with distribution in wide frequency band, and increase the transient vibration force of the system by 25 % as a result of the output of strong instantaneous vibration intensity.

关 键 词：激振器 动力学分析 二级摆 拉格朗日方程 转动摩擦 

分 类 号：O313[理学—一般力学与力学基础]