Journal
JOURNAL OF VIBRATION AND CONTROL
Volume 13, Issue 1, Pages 45-64Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546306070227
Keywords
optimal control; piezoelectric actuator; rotordynamics; real-time control
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This work deals with active vibration control of a rotating machine in both steady state and transient motion. Two stacks of piezoelectric ceramic orthogonally arranged in a plane localized at one of the bearings were used as the control actuators, using a modal control strategy. The optimal controller LQR was used to calculate the control gain, working together with an LQE observer that estimates the modal state. Simulation carried out on FEM model suggested the feasibility of the control strategy, and experimental tests using a physical test rig show good agreement with the numerical results, and confirm the efficiency of the strategy.
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