Active Balancing of Flexible Rotors using Strain Actuators

AW Lees & MI Friswell (Swansea University)

Journal of Vibration Engineering & Technologies, Vol. 4, No. 6, December 2016, pp. 483-489

Abstract

Smart machines promise increased functionality, such as conditioning monitoring and vibration control. Several technologies are relevant to smart machines including magnetic bearings, shape memory alloys (SMA) and piezoelectric activation. A range of solutions is available for rigid rotors, usually based on smart or active bearings or pedestals. However, the control of flexible rotors requires some modification on the rotor itself. In this paper, equations of motion are developed to describe a rotor with a strain actuator (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 paper discusses the optimum control strategies for such a system.

Paper Availability

This material has been published in the Journal of Vibration Engineering & Technologies, Vol. 4, No. 6, December 2016, pp. 483-489, the only definitive repository of the content that has been certified and accepted after peer review. Copyright and all rights therein are retained by KRISHTEL eMAGING SOLUTIONS PVT.


Journal of Vibration Engineering & Technologies