G - Physics – 05 – D
Patent
G - Physics
05
D
341/71
G05D 19/02 (2006.01) F16F 15/03 (2006.01) G10K 11/178 (2006.01)
Patent
CA 1326706
ABSTRACT OF THE DISCLOSURE A structural magnetic vibration controller and a method for actively controlling vibrations through the use of a magnetic coupling between a damper mass and a stationary component of rotary machinery wherein the stiffness and damping characteristics of the magnetic coupling are controlled as a function of the relative movements between a first electromagnet carried by the machinery and a second electromagnet carried by the damping mass. The magnetic fields of the magnetic coupling formed by counterpoised electromagnets are controlled by electronic current control circuitry to achieve dynamic tuning via stiffness and dampening characteristics of the magnetic coupling so as to suppress system resonances which occur during transient machinery operation as well as during steady state operation on the basis of a signal from position transducers that provides a displacement feedback that is utilized to vary the coupling stiffness, and a first derivative which is used to control the dampening characteristic of the coupling as a function of the rate at which the position sensed changes with respect to time.
608156
Barger Joel James
Craig Philip Joel
Bereskin & Parr
Westinghouse Electric Corporation
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