05140856 is referenced by 54 patents and cites 4 patents.

A slowly turning rotating mass, such as a wind turbine rotor, is balanced in situ by measuring the magnitude of a phenomenon, such as acceleration, created by rotor unbalance at a location on a mass support shaft which is close to the mass. The measurement of the phenomenon is made along a line selected to be insensitive to the bias of gravity on the mass. The measurement is made while the mass turns at its usual operating rate. The structure which supports the shaft is fixed as rigidly as possible in space while measurements of the phenomenon are made.

Title
In situ balancing of wind turbines
Application Number
7/621316
Publication Number
5140856
Application Date
December 3, 1990
Publication Date
August 25, 1992
Inventor
Orla W Larsen
Palm Springs
CA, US
Agent
Christie Parker & Hale
Assignee
Dynamic Rotor Balancing
CA, US
IPC
G01M 1/28
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