Whole Flight Envelope Aero-engine Sensor Failure Diagnosis Based on Neutral Network

摘要

In consideration of the common sensor failures in aero-engine control system, a new approach is proposed using partition flight envelope and two-stage empirical modeling strategy based on neutral network in this paper. Clusters of input parameter data are formed using GMMs and neutral network status observers are designed and trained for every flight envelope partition, so the destination of the whole flight envelope aero-engine sensor failure diagnosis can be realized in real-time and on-board. Digital simulation results show that this method is very practical, effective and feasible.