US 7,321,809 B2 | ||
Methods and systems for analyzing engine unbalance conditions | ||
John L. Vian, Renton, Wash. (US); and Matt H. Travis, Fall City, Wash. (US) | ||
Assigned to The Boeing Company, Chicago, Ill. (US) | ||
Filed on Dec. 30, 2003, as Appl. No. 10/750,294. | ||
Prior Publication US 2005/0149234 A1, Jul. 07, 2005 | ||
Int. Cl. G01M 1/38 (2006.01) |
U.S. Cl. 700—279 [73/66; 700/280; 706/23] | 30 Claims |
1. A method of analyzing an engine unbalance condition, the method comprising:
receiving vibrational data from a plurality of locations distributed over at least one of an engine and a surrounding engine
support structure;
inputting the vibrational data into an artificial neural network control volume (ANNCV);
using a neural network inverse model, establishing a relationship between the vibrational data from the plurality of locations
and an unbalance condition of the engine; and
outputting diagnostic information from the ANNCV, the diagnostic information indicating the unbalance condition of the engine,
the diagnostic information including an unbalance magnitude and an angular location as a function of a rotational frequency
of the engine.
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