Active dual reaction mass absorber for vibration control
First Claim
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1. An active vibration absorber comprising:
- a frame connected to an element to be controlled;
at least two reaction mass elements;
spring means for separately connecting each of said reaction mass elements to said frame so that each of said reaction mass elements are independently movable with respect to said frame and other reaction mass elements; and
means for generating an equal and opposite force between said reaction mass elements so that said reaction mass elements move relative to each other for damping vibration.
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Abstract
An active vibration absorber including a frame connected to a structure to be controlled and at least two reaction mass elements operatively connected to the frame. Each of the reaction mass elements is independently movable with respect to said frame. The absorber includes a force generating member for controlling relative movement between the reaction mass elements for damping vibration of the structure. The inventive dual reactive mass absorber requires less control force to produce the same vibration attenuation as conventional single reactive mass absorbers.
49 Citations
11 Claims
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1. An active vibration absorber comprising:
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a frame connected to an element to be controlled; at least two reaction mass elements; spring means for separately connecting each of said reaction mass elements to said frame so that each of said reaction mass elements are independently movable with respect to said frame and other reaction mass elements; and means for generating an equal and opposite force between said reaction mass elements so that said reaction mass elements move relative to each other for damping vibration. - View Dependent Claims (2, 3, 4, 5)
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6. An active vibration absorber comprising:
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a structure upon which a force acts to cause movement; at least two reaction mass elements; spring means for separately connecting each of said reaction mass elements to said structure so that each of said reaction mass elements are independently movable with respect to said structure and other reaction mass elements; and means for generating an equal and opposite force between said reaction mass elements so that said reaction mass elements move relative to each other for damping vibration. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification