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- W2944564314 abstract "Electromechanical actuators (EMAs) are considered a promising energy-efficient technology for actuating the flight controls of future aircraft. When it comes to aerospace systems, the degradation of EMAs should be checked during regular maintenance events or through condition-based maintenance. Ball bearings have a significant failure rate for flight control EMAs and are usually monitored by vibration noise. A challenge for detecting bearing faults, using state-of-the-art industrial methods, is the presence of a ball-screw mechanism that produces nominal vibration noise similar to that of faulty bearings. No prior research has investigated this problem. This paper explores vibration noise generated from a set of healthy and faulty bearings included in a typical ball-screw EMA. In addition, a method is introduced for evaluating fault diagnosis performance for different time and frequency vibration features. The technique has been validated on an EMA actuator at the German Aerospace Center (DLR)." @default.
- W2944564314 created "2019-05-16" @default.
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- W2944564314 date "2018-04-01" @default.
- W2944564314 modified "2023-09-27" @default.
- W2944564314 title "Fault detection of ball screw-based electromechanical actuators using electrical, ultrasound and accelerometer sensors" @default.
- W2944564314 doi "https://doi.org/10.1784/204764218823029048" @default.
- W2944564314 hasPublicationYear "2018" @default.
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