Active vibration control of rotor systems

A study is presented in which the vibrations of a rotor are controlled under both synchronous and transient conditions. In this paper sliding mode control theory has been adopted to minimise rotor vibration due to mass imbalance e.g. blade loss. The system gain matrix is obtained by choosing the desired pole position and solving the Riccatti equation. Control forces are applied to the system via a feedback loop. Multiprocessor hardware is used to apply the controller algorithm on line to an experimental rig consisting of a rotor and two journal bearings with a magnetic actuator to apply the control force. Experimental work has been carried out to show the effectiveness of the proposed control method.