原点反共振振动机振幅可靠性分析  

Amplitude Reliability Analysis of Driving Point Anti-resonance Vibratory Machines

作　　者：焦春旺[1] 王倩倩[1] 王福斌[1] 刘杰[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2011年第8期1169-1172,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50775029);中央高校基本科研业务费专项资金资助项目(N090603008)

摘　　要：分析了原点反共振振动机的原理,以此为基础推导出原点反共振振动机上下质体稳态振幅的表达式.提出了反共振振动机可靠性及可靠激振频率区间的概念,分析了由于加工、安装等误差造成的反共振振动机各元件参数的随机性.基于随机摄动法,对反共振振动机的振幅响应进行可靠性分析,对振幅的稳定性条件进行量化,从而获得反共振振动机械可靠工作的激振频率区间,为验证原点反共振振动机参数选择的合理性及寻求可靠工作的激振频率区间提供了一种有效方法.最后进行了算例仿真.The principle of driving point anti-resonance vibratory machines is introduced, with the expressions of the upper/lower body＇s steady amplitude derived.The concepts of the reliability and reliable exciting-frequency range of driving point anti-resonance vibratory machines are proposed.The randomness of vibratory machine parameters caused by manufacturing,installation and other errors is analyzed.Furthermore,the random perturbation method is used to analyze the amplitude response of the vibratory machine to the exciting frequency and to quantize the amplitude stability condition,thereby obtaining the exciting-frequency range in which the vibratory machine can work reliably.This work provides an effective approach to verifying the rationality of parameters selection and choosing the effective exciting-frequency range.Finally,a numerical example is given.

关 键 词：原点反共振 随机摄动法 可靠性 有效频率范围 

分 类 号：TD156[矿业工程—矿山地质测量]