摘要
为研究电磁振动给料系统工作时的振动响应和影响系统性能的关键参数,以电脑组合秤中的电磁振动给料斗为研究对象,将其简化为双自由度计算模型,运用达朗贝尔定理建立动力平衡方程,利用MATLAB/Simulink软件对振动给料系统的工作特性进行模拟分析,探讨了系统整个工作历程的瞬态响应和影响系统性能的关键参数,分析了阻尼比对系统的影响。结果表明,整个过程振动给料系统竖向位移、速度的峰值出现的时间均在0.1 s内,但不同时出现且均迅速趋于稳定;停振时间、调整时间、槽体稳态振幅均随阻尼比的增大而减小;当阻尼比大于等于0.1时,物料不能被抛起,振动给料失效。
In order to study the vibration response of the electromagnetically vibrative feeding system during operation and the key parameters affecting the system performance, the paper took the electromagnetically vibrative feeding hopper of the automatic combination weigher as the study object, which was simplified as the calculation model with dual degrees of freedom. And then, it applied the theory of D＇Alenmbert to build the dynamic equilibrium equation, and used MATLAB/Simulink to simulate and analyze the dynamic characteristics of the vibrative feeding system. In addition, the paper discussed instantaneous response of the system during whole operation and the key parameters affecting the system performance, and analyzed the influence of the damping ratio on the system performance. The results showed： the peak of both vertical displacement and velocity of the vibrative feeding system during whole operation occurred in 0.1 s but did not occurred at the same time; and quickly tended to be stable; the non-vibrative duration, adjusting duration and the steady-state amplitude of the hopper decreased with the increase in the damping ratio; while the damping ratio was greater than or equal to 0.1, the material could not be thrown up, and vibrative feeding failed.
出处
《矿山机械》
北大核心
2013年第12期100-104,共5页
Mining & Processing Equipment
基金
四川省应用基础计划项目(2011JY0028)
关键词
电磁振动给料系统
SIMULINK仿真
瞬态响应
动力学特性
electromagnetically vibrative feeding system
Simulink simulation
instantaneous response
dynamic characteristic
