Monitoring of an aircraft engine for anticipating maintenance operations

摘要

A method monitoring an aircraft engine, including: collecting time history measurements on a first set of measurements on endogenic variables and a second set of measurements on exogenic variables; standardizing measurements related to the endogenic variables considering the exogenic variables to form an entry point corresponding to a condition of a current engine in a multi-dimensional space, for each acquisition; projecting each multi-dimensional space entry point onto an image point on a previously constructed map, forming a sequence of image points on the map reflecting a distribution of the multi-dimensional space entry points, the image points forming a current trajectory representing a change to conditions of the current engine; comparing an end of the current trajectory with previously recorded portions of aircraft engine trajectories kept in a database; and analyzing statistical variations of the trajectories to anticipate maintenance operations on the current engine.

主权项

1. A method of monitoring an aircraft engine, comprising:
electronically collecting time history measurements regarding variables related to a current engine and its environment, including a first set of measurements regarding endogenic variables describing behavior of the engine and a second set of measurements regarding exogenic variables describing acquisition context, during each acquisition; standardizing measurements related to the endogenic variables taking account of measurements related to the exogenic variables to form an entry point corresponding to a condition of the current engine in a multi-dimensional space, for each acquisition; projecting, using a determined compression technique, each entry point in the multi-dimensional space onto an image point on a previously constructed map, to form a sequence of image points on the map reflecting a distribution of entry points in the multi-dimensional space, the image points forming a current trajectory representative of a change to the conditions of the current engine; comparing a portion of an end of the current trajectory with previously recorded portions of trajectories of aircraft engines kept in a database to search for similar trajectories; analyzing statistical variation of the end of current trajectory as a function of the similar trajectories; and forecasting maintenance operations on the current engine.