The data contains he measurement data of an active controlled rotor which is subject to internal damping and gyroscopic effects. The used rotor test-rig has an active bearing which comprises two piezo actuators. Normally, both actuators ae used for active control. The experiments investigate the feasability of using only one actuator on a bearing plane for active control. This apporach only works duo to the present strong gyroscopic effects which split the forward and backward whirl resonances. The used control is a combination of Integral Force Feedback and the Least Mean Squares algorithm. Read the publication for more details.