An active non-contact journal bearing with bi-directional driving capability utilizing coupled resonant mode

Ping Guo*, Han Gao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Non-contact journal bearings are conventionally based on pressurized air or magnetic levitation. This paper reports on a new design of an active non-contact journal bearing with bi-direction driving capabilities. It combines the functions of an axis positioner, non-contact journal bearing, and rotary motor utilizing coupled vibration modes. The shaft levitation is achieved by creating a stable air film using near-field acoustic force; while the non-contact rotation is realized by controlling the pressure distribution within the air film using coupled resonant mode. The essential design methodology and theoretical principles are presented along with the performance evaluation of the functional prototypes.

Original languageEnglish (US)
Pages (from-to)405-408
Number of pages4
JournalCIRP Annals
Volume67
Issue number1
DOIs
StatePublished - Jan 1 2018

Keywords

  • Acoustic levitation
  • Bearing
  • Ultrasonic

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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