The invention relates to the technical field of
actuator service life early warning, and particularly discloses an electric
actuator part service life
early warning system based on vibration-torque
signal fusion, which comprises a
data processing center connected with a sensor group, and the
data processing center is configured to execute the following steps: responding to a real-time operation state of an electric
actuator, and sending the real-time operation state of the electric actuator; and collecting an original vibration
signal, an original torque
signal and a multi-
physics field auxiliary signal, and generating calibrated multi-
physics field data based on multi-
physics field data cross validation logic. According to the invention, a
cross validation and self-calibration mechanism of multi-
physical field data is utilized, the problem of
false alarm caused by sensor drift in a severe environment is effectively solved, and the authenticity and reliability of input data are ensured; secondly, by sensing the fluctuation intensity of the working condition and adaptively adjusting the
neural network topology structure, the degradation features are accurately captured under the dynamic load, and the interference of the non-stable working condition on fault
feature extraction is eliminated.