METHOD AND DEVICE FOR ACOUSTICALLY DETECTING A DYSFUNCTION OF AN ENGINE EQUIPPED WITH AN ACTIVE NOISE CONTROL.

摘要

The present invention relates to a method for acoustically detecting at least one malfunction (DYS) of an engine, the motor generating a primary noise Po which is processed by an active noise control system emitting on the noise reduction targets an acoustic signal Pc produced by at least one actuator and connected by a transfer function H to a signal Y produced by said active noise control system, said dysfunction (DYS) having an identifiable acoustic signature in the primary noise Po to the targets of noise reduction, characterized in that it comprises the following steps: acquisition of said Y signal produced by the active control system; - Identification of the possible occurrence of the malfunction by a monitoring means that exploits the knowledge of Y and H and issues an alert message if necessary.