Active vibration control for rotating machines with current-controlled electrodynamic actuators and velocity feedback of themachine feet based on a generalizedmathematical formulation

关键词:  Active vibration control · Rotating machines · Current-controlled electrodynamic actuators · Steel frame foundation

Key words:  Active vibration control · Rotating machines · Current-controlled electrodynamic actuators · Steel frame foundation

摘要:

Atheoretical analysis regarding active vibration control of rotatingmachines with current-controlled electrodynamic actuators between machine feet and steel frame foundation and with velocity feedback of the machine feet vibrations is presented. First, a generalized mathematical formulation is derived based on a state-space description which can be used for different kinds of models (1D, 2D, and 3D models). It is shown that under special boundary conditions, the control parameters can be directly implemented into the stiffness and damping matrices of the system. Based on the generalized mathematical formulation, an example of a rotating machine—described by a 2D model—with journal bearings, flexible rotor, currentcontrolled electrodynamic actuators, steel frame foundation, and velocity feedback of the machine feet vibrations is presented where the effectiveness of the described active vibration control system is demonstrated.

Abstract:

Atheoretical analysis regarding active vibration control of rotatingmachines with current-controlled electrodynamic actuators between machine feet and steel frame foundation and with velocity feedback of the machine feet vibrations is presented. First, a generalized mathematical formulation is derived based on a state-space description which can be used for different kinds of models (1D, 2D, and 3D models). It is shown that under special boundary conditions, the control parameters can be directly implemented into the stiffness and damping matrices of the system. Based on the generalized mathematical formulation, an example of a rotating machine—described by a 2D model—with journal bearings, flexible rotor, currentcontrolled electrodynamic actuators, steel frame foundation, and velocity feedback of the machine feet vibrations is presented where the effectiveness of the described active vibration control system is demonstrated.