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Smart Machines with Flexible Rotors

  • Arthur W. Lees
  • Michael I. Friswell
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 23)

Abstract

The concept of smart machinery is of current interest. Several technologies are relevant in this quest including magnetic bearings, shape memory alloys (SMA) and piezoelectric activation. Recently a smart bearing pedestal was proposed based on SMAs and elastomeric O-rings. However, such a device is clearly relevant only for the control of rigid rotors; for flexible rotors there is a need for some modification on the rotor itself. In this paper, equations of motion are developed to describe a rotor with a force generator (for example, a piezoelectric element) mounted on it. It is shown that such a system may be used to compensate for imbalance by inducing a rotor bend. This leads to some questions as to the optimum control strategies, and the paper discusses some of the possibilities.

Keywords

Rotordynamics Control Imbalance Rotor bend Piezoelectric 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.College of EngineeringSwansea UniversitySwanseaUK

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