Systems and methods for active vibration damping

Details Systems and methods for active vibration damping Systems and methods for active vibration damping

2005-06-02

2010-06-01

Williams, Thomas J (Department: 3657)

Brakes

Inertia of damping mass dissipates motion

C267S136000, C248S550000, C248S636000, C248S638000

Reexamination Certificate

active

07726452

ABSTRACT:
An active vibration damping system having a supporting spring for addressing a static force from a payload, and an independent actively isolated damper positioned in parallel between a payload and a source of vibration for damping dynamic force from the payload to an actively isolated point. The actively isolated damper includes a small intermediate mass, distinct and decoupled from the payload mass, and a passive isolator element for dynamic coupling of the isolated platform to the small intermediate mass. The small intermediate mass provides a point to which dynamic forces from the payload may be dampened. The active damper also includes at least one actuator coupled at one surface to the small intermediate mass and coupled at a second surface to the vibrating base platform. A motion sensor may also be provided on the small intermediate mass so as to generate a feedback signal as a function of the movement of the small intermediate mass. The motion sensor together with a compensation/amplifier module and the actuator act as part of a feedback compensation loop for minimizing vibration.

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