A review of fault diagnosis, prognosis and health management for aircraft electromechanical actuators

Yin, Zhengyang; Hu, Niaoqing; Chen, Jiageng; Yang, Yi; Shen, Guoji

doi:10.1049/elp2.12225

Cited by 22 publications

(8 citation statements)

References 116 publications

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“…Accuracy of electro-mechanical or hydraulic actuators is easily deteriorated in complex flight environment such as electromagnetic interference, low temperature or leakage. In this situation, a fault-tolerant control is expected to accommodate actuator deviation within a certain range [1]. Research works of dealing with actuator failure are presented in a variety of ways, for instance, the model prediction control [2], multi-variable integral terminal sliding mode control [3], incremental nonlinear FTC [4], and intelligent methods [5,6].…”

Section: Introductionmentioning

confidence: 99%

Performance-Constraint Fault Tolerant Control to Aircraft in Presence of Actuator Deviation

Tang,

Zhao,

Liang

et al. 2024

Algorithms

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Accuracy of electro-mechanical actuator in aircraft is susceptible to variable operation conditions such as electromagnetic interference, changeable temperature or loss of maintenance, leading in turn to flight performance degradation. This paper proposed an unified control paradigm that aims to keep aircraft’s velocity in a safe boundary and shorten the system stabilizing time in presence of actuator deviation. The controller is derived following a practical finite-time-convergence (FTC) with extended dynamics, and an integrated state-constraint structure so as to restrict air vehicle’s attitude rate or translation velocity. It is proved that the system state converges to a sphere near the origin in a finite time, the state trajectory is always remain within the prescribed range, and all signals of the closed-loop system are uniformly ultimately bounded. Compared simulation with the quadratic Lyapunov-based FTC method and an asymptotic convergence controller are conducted on an unmanned helicopter prototype. Results show that the proposed controller enhances the dynamic and fault-tolerant performance of resisting actuator fluctuation.

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Section: Introductionmentioning

confidence: 99%

Performance-Constraint Fault Tolerant Control to Aircraft in Presence of Actuator Deviation

Tang,

Zhao,

Liang

et al. 2024

Algorithms

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“…The wear of the ball-screw leads to increased axial internal clearance of the actuator [27,28]. Isturiz et al [29] used current and position signals as monitoring indicators for measuring clearance increase.…”

Section: Introductionmentioning

confidence: 99%

A Wear Prediction Framework for Ball-Screw of Electro-Mechanical Brake Unit on Railway Trains

Ma,

Weng,

Tian

et al. 2024

Actuators

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The electro-mechanical brake is a new advancement in railway train braking. Ball-screws are important components of electro-mechanical braking units (EMBUs), and their wear can cause EMBUs to degrade in performance or even fail to function. In this paper, we present a framework for prediction of ball-screw wear with discrete operating conditions as inputs, taking into account the time-varying characteristics of EMBUs. The framework includes determining the contact type, analyzing relative motion, calculating contact deformations, and estimating wear. The contact type is determined based on the quasi-static approach of Hertz theory. A dynamics model using multiple coordinate systems is established to analyze how balls and raceways move in relation to each other. The contact deformations of the ball–raceway contact are determined using numerical calculation. Then, the wear depth increment is calculated using the Archard model. The results of the calculation and the endurance test indicate that the wear on the screw raceway is greater than that on the nut raceway. The effect of velocity is greater than the effect of axial force. The presented calculation framework is reasonable and can be used for predicting EMBU ball-screw wear.

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“…However, there are certain drawbacks related to electromechanical devices use (Yin et al 2022). For starters, their power density is substantially lower if compared to hydraulic systems.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, as Cronin (2012) discusses, maintenance interventions on EMAs are significantly easier.Moreover, a great advantage of EMAs is their adaptability to small and low power applications: for example, they are widely used for flight controls on small UAVs, with some actuators weighing only a few grammes. Hydraulic systems cannot satisfy these so strict requirements in terms of miniaturisation.However, there are certain drawbacks related to electromechanical devices use(Yin et al 2022). For starters, their power density is substantially lower if compared to hydraulic systems.…”

mentioning

confidence: 99%

FBG Thermal Response Analysis for Electro-Mechanical Components Monitoring in Aerospace Systems

Aimasso,

Vedova,

Maggiore

2023

Proceeding of the 33rd European Safety and Reliability Conference

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Electromechanical components are widely used in aerospace systems and must meet strict reliability, safety, and environmental requirements. On the other hand, Fiber Bragg Grating (FBG) sensors are particularly advantageous to monitor specific physical parameters, like temperature or strain, due to their small size, low weight, high sensitivity, electrical passivity, and immunity to electromagnetic interference. The current study examines the performances of FBGs, enhancing their ability to read short-term thermal transients and comparing it to that of a conventional thermal probe (PT100). At first, instrumentation was placed in a climatic chamber and subjected to different thermal cycles. Specifically, an experimental set-up was developed to compare FBG's sensitivity under different fiber integration strategies. The different solutions implemented considered sensors independently from supports influence and when placed in simple example of packaging. In a second time, both environmental and punctual thermal transients were considered. The performances of the various solutions adopted were duly compared and supported by statistical analysis. Tests have shown that optical sensors have an extremely high sensitivity and a much shorter reaction time if compared to the PT100 probe. Moreover, it resulted that when FBG are integrated in other material, they are able to detect their support's temperature de facto in real time. Data collected by this work allow to consider strategic the use of FBG for thermal monitoring using a minimally invasive and extremely accurate technology.

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A review of fault diagnosis, prognosis and health management for aircraft electromechanical actuators

Cited by 22 publications

References 116 publications

Performance-Constraint Fault Tolerant Control to Aircraft in Presence of Actuator Deviation

Performance-Constraint Fault Tolerant Control to Aircraft in Presence of Actuator Deviation

A Wear Prediction Framework for Ball-Screw of Electro-Mechanical Brake Unit on Railway Trains

FBG Thermal Response Analysis for Electro-Mechanical Components Monitoring in Aerospace Systems

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