Patent ID: 6974006
Filing Date: 2005-12-13
Classification: F16F,G05D

Abstract:
1. A low-frequency vibration control system, comprising: an electromagnetic actuator for selectively applying forces to a controlled structure at a first region of said controlled structure, said forces being adapted to interfere with corresponding forces received at a second region of said controlled structure so that substantial vibration cancellation occurs at a third region of said controlled structure, said actuator consisting essentially of an armature, a magnet coil and a flux sensor; and a digital control system for causing a force-linearized flux to be generated in a gap between said armature and said magnetic coil, as a function of sensed vibration, said control system comprising logic for defining a non-linear value of flux demand so as to yield an accurate linear control-demand-to-output-force relationship; and wherein said flux sensor sends signals to said digital control system representative of the flux generated in said gap between said armature and said magnetic coil.