Active control of vibration
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United States of America Patent
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Sep 20, 1994
Issued Date -
N/A
app pub date -
Dec 17, 1991
filing date -
Mar 16, 1989
priority date (Note) -
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Abstract
A method of and system for active vibration control in an elongate member such as a pipe (2), wherein an actuator which comprises at least one constrictive element (3) capable of changing its length is attached between flanges (1) spaced along the member and is controlled to produce deformations of the member which inhibit the transmission of unwanted vibration from the member to one side of the attached actuator to the other side.
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