Diagnosis of helicopter gearboxes using structure-based networks
Abstract
A connectionist network is introduced for fault diagnosis of helicopter gearboxes that incorporates knowledge of the gearbox structure and characteristics of the vibration features as its fuzzy weights. Diagnosis is performed by propagating the abnormal features of vibration measurements through this Structure-Based Connectionist Network (SBCN), the outputs of which represent the fault possibility values for individual components of the gearbox. The performance of this network is evaluated by applying it to experimental vibration data from an OH-58A helicopter gearbox. The diagnostic results indicate that the network performance is comparable to those obtained from supervised pattern classification.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- June 1995
- Bibcode:
- 1995STIN...9527373J
- Keywords:
-
- Fault Detection;
- Gears;
- Neural Nets;
- Oh-58 Helicopter;
- Transmissions (Machine Elements);
- Vibration Measurement;
- Error Analysis;
- Mathematical Models;
- Pattern Recognition;
- Vibration;
- Mechanical Engineering