HOLMES (FP7) – Health On Line Monitoring for Electromechanical actuator Safety

2014-2016 HOLMES – Health On Line Monitoring for Electromechanical actuator Safety
Funded by Unione Europea (FP7) Clean Sky Joint Technology Initiative
2 partners, total budget 490.000 Eur 24 months (July 2014-June 2016)

This project is part of the research for the development of electric actuators for aircraft flight surfaces, with the aim of reducing or completely eliminating hydraulic systems. The main objective is the development of a fault detection algorithm to detect the occurrence of potentially serious failures of mechanical components. In particular, one of the goals is to achieve an effective diagnostic without using additional sensors (such as accelerometers widely used in mechanical fault detection) on the internal mechanical components (spheres, screws, …). The idea is to monitor the indirect effects in the standard measurements to detect performance degradation.

Figure 1. Test bench

The CAL assignments are:

– The development of the experimental activity using a test bench equipped with an electromechanical actuator subject to a load generated by an hydraulic actuator. Faults are artificially injected by reducing the sphere number, damaging the spheres themselves of the screw thread.

– The design of algorithms for fault detection based only on standard measurements, better using model free methods.