• CN:11-2187/TH
  • ISSN:0577-6686

›› 2001, Vol. 37 ›› Issue (11): 78-80.

• 论文 • 上一篇    下一篇

含粘性阻尼器的机械结构系统根轨迹分岔问题

刘晓平;杨秉根   

  1. 北京邮电大学自动化学院;美国南加利福尼亚大学
  • 发布日期:2001-11-15

ROOT LOCI BREAKAWAY ANALYSIS OF MECHANICAL STRUCTURAL SYSTEM WITH A DAMPER

Liu Xiaoping;Yang Binggen   

  1. Beijing University of Posts and Telecommunications University of Southern California,USA
  • Published:2001-11-15

摘要: 对受粘性阻尼器控制的机械结构系统进行了根轨迹分析,着重研究了根轨迹分岔现象。指出当粘性阻尼器位于机械结构的某些点处时,随着阻尼系数(控制增益)的增大,系统的某两条完整的根轨迹曲线可能会越来越靠近,相遇后又是相互分离。根轨迹的这种分岔现象对于确定阻尼器的安放位置及阻尼系数有重要的参考价值。通过对轴向移动弦结构系统进行算例分析,进一步研究了机械结构系统根轨迹特点及根轨迹分岔问题。

关键词: 分岔点, 根轨迹, 阻尼器

Abstract: The root loci analysis of the gyroscopic mechanical structural system controlled by a damper is presented. The breakaway points on the complete root loci are studied. It is pointed out when the damper is located on some position of the mechanical structural system, two branches of the root loci will meet at the breakaway point and then depart from this point in opposite directions. This result can play important role in determining the location and damping coefficient of the damper. Root loci breakaway analysis of gyroscopic mechanical structural system is studied via the numerical example of an axially-traveling string system.

Key words: Breakaway point, Damper, Root loci

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