Experimental investigation on active vibration control of rotor system with CSFDB

Aiming to realize the more applied active vibration control of rotor system, a new actuator, Controllable Squeeze Film Damping Bearing (CSFDB), is developed in this paper. The control principle of CSFDB is performed mainly with the aid of a specially designed electro-hydraulic servo system, which adjusts the axial position of the outer ring of the squeeze film bearing so that a desired film clearance is reached. In consequence, the stiff and damping natures of the whole rotor-bearing system is changed to ensure the stability and safety of system operation. The major research work of this paper can be roughly divided into following three parts: (1) Investigation on the vibration natures of CSFDB-rotor system. (2) Study on accelerate and decelerate vibration responses of CSFDB-rotor system. (3) Experimental investigation on the active vibration control scheme of CSFDB-rotor system. The experimental results reveal that the CSFDB developed in this paper is really effective to actively control the vibration of rotor systems and has good prospect to be widely used in modern industries.