大型体育场馆机械凸轮机构振动控制动力学模型  

Dynamic model of vibration control of mechanical cam mechanism in large stadium

作　　者：冯武龙[1] Feng Wulong(Xianyang Normal University,Xianyang,712000,China)

机构地区：[1]咸阳师范学院,陕西咸阳712000

出　　处：《现代科学仪器》2019年第3期155-159,共5页Modern Scientific Instruments

摘　　要：凸轮机构作为大型体育场馆中自动机械的传动、导向和控制元件,其面临着高性能、平稳性和精准性的要求,而这些性能的优化设计取决于其动态振动性。针对此,为改善凸轮机构的振动特性,文章将以凸轮机构振动产生的机理和危害为研究基点,以典型的高速凸轮机构为例,透过动力学建模分析其振动特性;同时,基于凸轮轮廓对于振动的关键影响性,引入光滑整形技术设计一种新型的凸轮轮廓,以实现对振动的有效控制,最后,在固有频率、阻尼系数等参数确定的条件,通过仿真分析,验证了该种方法可有效抑制高速工况下的凸轮振动问题。As the transmission,guidance and control components of automatic machinery in large stadiums,cam mechanism faces the requirements of high performance,stability and precision,and the optimization design of these properties depends on its dynamic vibration.In view of this,in order to improve the vibration characteristics of cam mechanism,this paper will take the mechanism and harm of the vibration of cam mechanism as the basic point,and take typical high-speed cam mechanism as an example to analyze its vibration characteristics through dynamic modeling.At the same time,based on the key influence of cam profile on the vibration,smooth shaping technology is introduced to design the cam mechanism.A new type of cam profile is proposed to control the vibration effectively.Finally,under the condition of determining the natural frequency and damping coefficient,the simulation results show that the method can effectively suppress the vibration of the cam at high speed.

关 键 词：自动机械 凸轮机构 动力学模型 光滑整形技术 

分 类 号：TB123[理学—工程力学]