Micro stick-slip vibration in hydraulic servo systems

Toshiyuki Hayase, Satoru Hayashi, Kazunori Kojima

Research output: Contribution to journalArticlepeer-review


This report treats micro stick-slip vibrations occurring in a typical computer-controlled hydraulic servo system. The relevant system consists of a hydraulic cylinder, a servo valve and a personal computer. First, an experiment was performed for a conventional feedback control system to confirm the occurrence of two different types of stick-slip vibration of small amplitude. Detailed numerical analysis was then performed to identify the main factors contributing to the vibrations. The control signal generated by the D/A converter causes micro stick-slip vibration of small amplitude over a wide range of control feedback gain. Increasing the feedback gain results in another type of micro stick-slip vibration of large amplitude due to the locally increased flow gain within the underlap of the servo valve. Computational results agree well with the experimental ones.

Original languageEnglish
Pages (from-to)444-450
Number of pages7
JournalNippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Issue number606
Publication statusPublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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