Phase shift monitoring based on mode-decoupled disturbance observer for chatter detection

Shuntaro Yamato, Yuki Yamada, Takamichi Ito, Hirohiko Matsuzaki, Yasuhiro Kakinuma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Strong excitation at the chatter frequency results in the change of the phase shift between the dynamic cutting force and the displacement depending on the phase characteristic of machine tool. In this paper, the chatter was detected by monitoring this phase shift with the mechanical energy factor (MEF). To construct the sensor-less MEF monitoring system on the ball-screw-driven system, mode-decoupled cutting force estimation was applied to two inertia model, and the phase shift was monitored in the vibration mode. Through a milling test, the chatter vibration was detected in the vibration mode with low computation cost and simple threshold.

Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017
PublisherJapan Society of Mechanical Engineers
Publication statusPublished - 2017 Nov 13
Event9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017 - Hiroshima City, Japan
Duration: 2017 Nov 132017 Nov 17

Other

Other9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017
CountryJapan
CityHiroshima City
Period17/11/1317/11/17

Keywords

  • Ball screw driven stage
  • Chatter detection
  • Mode decoupling
  • Observer
  • Power factor
  • Sensorless

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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    Yamato, S., Yamada, Y., Ito, T., Matsuzaki, H., & Kakinuma, Y. (2017). Phase shift monitoring based on mode-decoupled disturbance observer for chatter detection. In Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017 [019] Japan Society of Mechanical Engineers.