• CN:11-2187/TH
  • ISSN:0577-6686

›› 1989, Vol. 25 ›› Issue (1): 19-28.

• 论文 • 上一篇    下一篇

高速凸轮机构动力稳定性的分析与实验研究

林逸;杨剑虹   

  1. 福州大学;福建省机械科学研究院
  • 发布日期:1989-01-01

AN ANALYTICAL AND EXPERIMENTAL INVESTIGATION OF THE DYNAMIC STABILITY OF THE HIGE-SPEED CAM-FOLLOWER SYSTEM

Lin Yi;Yang Jianhong   

  1. Department of Mechanical Engineering,Fuzhou University Fujian Research Institute of Mechanical Science
  • Published:1989-01-01

摘要: 文中对凸轮推杆系统的动力稳定性进行分析,在理论和实验的基础上建立了一种新的动力学模型,其中考虑了推杆的纵向和横向运动及其相互影响,导出了描述该系统的两个耦合的运动偏微分方程,经过简化得到一个描述推杆横向振动的变系数偏微分方程。应用Галеркин方法导出Hill方程组。根据Floquet理论,寻找Hill方程周期解存在之条件,得到临界频率方程,将此方程的求根问题转换为相应方阵的特征根求解的问题,简化了计算。在此基础上编制了计算程序,以确定动力不稳定区域。文中并以FG-1型柴油机的配气机构为例进行了理论计算和实验研究。

关键词: 不稳定现象, 动力模型, 动力稳定性, 临界频率, 凸轮系统

Abstract: A new dynamic model of the cam-follower system at high speed is developed, in which both the longitudinal oscillation and transverse vibration of the push-rod are considered.The equations of motion of the push-rod and the critical frequency determinant are derived to determine the transition curves seperating stability from instability. The experiment has been carried out to justify the validity of theoretical analysis.

Key words: 不稳定现象, 动力模型, 动力稳定性, 临界频率, 凸轮系统