Supports – With condition responsive control means
Reexamination Certificate
2005-04-05
2005-04-05
Chapman, Jeanette E. (Department: 3635)
Supports
With condition responsive control means
C052S167400, C052S167600, C052S167800, C052S167100, C267S136000
Reexamination Certificate
active
06874748
ABSTRACT:
An active vibration control system for controlling excessive or unwanted vibrations in floors or other structures. The system has three main components: (1) velocity sensor w/signal conditioner; (2) feedback controller; and (3) proof-mass actuator. This system works by creating a feedback loop that generates a control force proportional to the velocity, thus adding damping to the controlled modes of floor vibration. In other words, the feedback loop makes the moving mass of the actuator move to counteract the motion of the floor. The system is optimized such that the motor can be driven with a sinusoidal force where the peak force is at or near the full motor capacity at any frequency without exceeding the stroke while maintaining a simple and cost effective feedback controller. Additionally, a relationship between the fundamental natural frequency of the floor system and actuator is established to provide efficient and stable control.
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Chapman Jeanette E.
McQuaide, Blasko, Schwartz Fleming & Faulkner, Inc.
The Penn State Research Foundation
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