Sensorless tool stiffness monitoring in buffing

Ryo Koike, Ryo Kumakura, Takashi Arai, Eishiro Uchishiba, Makoto Murakami, Takahisa Sagara, Yasuhiro Kakinuma

Research output: Contribution to journalArticlepeer-review


In current practice, the buffing process required to finish the surface of mechanical parts is performed manually by a technical expert as it requires a delicate adjustment of the buffing force. The automation of this process is desirable in an effort to shorten the process time and reduce labor cost. To automate the buffing process, a beneficial process monitoring technique that supervises the buffing tool conditions in real time must be developed. From a practical perspective, an observer technique that does not require additional sensors would be most suitable for monitoring the tool operating condition. The authors propose a technique that estimates the buffing tool stiffness based on a disturbance observer. The validity of the proposed method as a buffing tool condition monitoring technique is verified through numerical simulations and experiments.

Original languageEnglish
Pages (from-to)827-836
Number of pages10
JournalInternational Journal of Automation Technology
Issue number6
Publication statusPublished - 2014 Nov 1


  • Buffing
  • Contact stiffness
  • Force control
  • Force estimation
  • Process monitoring

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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