Real-time Monitoring for the Actuator Mechanism of the Aileron

Structural Health Monitoring (SHM) provides a comprehensive assessment of structural state and damage based on monitoring structural parameters. It has definite practical significance in extending the service life of the structure, reducing the maintenance cost and improving the safety and reliability of the structure. In recent years, there were many aircraft faults founded in the aileron control mechanism, which not only affect the success of flight mission, but also seriously impact on aircraft safety. So it would be useful to improve the aircraft's flight performance and guarantee flight safety by analyzing and preventing the faults in the aileron control mechanism. The dynamic responses of the aileron control mechanism could reveal its internal relations between the faults and the external loads. Comparing the different dynamics responses of the normal mechanism (without faults) and the abnormal one (with faults), the probable faults and its characteristics could be extracted. Then prevention and faults diagnosis would be carried. Taking an actuator mechanism of aileron as example, its rigid-flexible coupling dynamic model was constructed to obtain its dynamic responses with natural excitation.