A self-sensing and self-actuating active rotor with an algorithmic direct search controller

Samuel Jimenez, Patrick Keogh

Research output: Contribution to journalArticle

Abstract

AN active rotor topology for vibration control in rotating machinery is proposed. MEMS accelerometers and miniature mass-balancer actuators are placed within a hollow rotor to produce a self-sensing, self-actuating design. When compared to conventional stator-mounted active systems, this topology enables an increased number of sensors and actuators, with greater freedom to select their location along the rotor. The construction and evaluation of a prototype is reported. An Algorithmic Direct Search Controller is adopted to provide non-a priori vibration control. The searching algorithm is specified to solve a discrete
problem, accounting for the limits in resolution of sensors and actuators. In addition, features have been introduced to prevent premature convergence at saddle points. The controller has been applied both in simulation and experimentally, achieving a substantial reduction in rotor vibration.
Original languageEnglish
Pages (from-to)1563-1574
Number of pages11
JournalIEEE/ASME Transactions on Mechatronics
Volume22
Issue number4
Early online date24 Apr 2017
DOIs
Publication statusPublished - 31 Aug 2017

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Keywords

  • Rotating machines
  • vibration control
  • intelligent structures
  • intelligent actuators
  • optimization methods

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