Traditional hydraulic servomechanisms for aircraft control surfaces are being gradually replaced by newer technologies, such as Electro-Mechanical Actuators (EMAs). Since field data about reliability of EMAs not available due to their recent adoption, failure modes fully understood yet; therefore, an effective prognostic tool could help detect incipient failures the flight system, in order properly schedule maintenance interventions and replacement actuators. A twofold benefit would be...

Abstract In recent years aeronautical systems are becoming increasingly complex, as they often required to perform various functions. New intelligent capable of self-monitoring their operation parameters, able estimate health status, and possibly diagnostic or prognostic For these purposes, frequently need acquire several different signal types; although it is sometimes possible implement virtual sensor techniques, usually necessary dedicated sensing hardware. On the other hand, installation...

Prognostics and health management aim to predict the remaining useful life (RUL) of a system allow timely planning replacement components, limiting need for corrective maintenance downtime equipment. A major challenge in prognostics is availability accurate physics-based representations faults dynamics. Additionally, analysis data acquired during flight operations traditionally time consuming expensive. This work proposes computational method overcome these limitations through dynamic...

The development and validation of prognostic algorithms digital twins for Electromechanical Actuators (EMAs) requires datasets operating parameters that are not commonly available. In this context, we assembling a test bench able to simulate different scenarios environmental conditions an EMA in order collect the actuator both nominal under effect incipient progressive faults. This paper presents design manufacturing planetary gearbox bench. Mechanical components were conceived making...

The ever increasing adoption of electrical power as secondary form on-board is leading to an increase in the usage electromechanical actuators (EMAs). Thus, order maintain acceptable level safety and reliability, innovative prognostics diagnostics methodologies are needed prevent performance degradation and/or faults propagation. Furthermore, use effective carries several benefits, including improved maintenance schedule capability relative cost decrease, better knowledge systems health...

Abstract Future generation actuation systems will be characterized by ever-increasing complexity. In this context, it necessary to adopt advanced health monitoring strategies guarantee a high level of operational safety and system reliability. Prognostics Health Management (PHM) is thus emerging as an enabling discipline for the design operation future advanced, complex systems. Smart with embedded self-monitoring capabilities are nowadays required in order provide early faults...

Adoption of electromechanical actuation systems in aerospace is increasing, and so reliable diagnostic prognostics schemes are required to ensure safe operations, especially key, safety-critical such as primary flight controls. Furthermore, the use methods can increase system availability during life cycle thus reduce costs if implemented a predictive maintenance framework. In this work, an improvement already presented algorithm will be introduced, whose scope predict actual degradation...

Abstract In recent years, aerospace systems have undergone a huge technical-scientific impulse, evolving new high-performance intelligent solutions able to perform diagnostic and prognostic functions autonomously. this scenario, an important role is certainly played by the types of sensors combining high performance (in terms sensibility, accuracy, reliability) with marked resilience external disturbances (e.g. EM noise or electrostatic discharges) other environmental factors. Fiber Bragg...

The increasing interest for adopting electromechanical actuators (EMAs) on aircraft demands improved diagnostic and prognostic methodologies to be applied such systems in order guarantee acceptable levels of reliability safety. While diagnostics methods techniques can help prevent fault propagation performance degradation, tandem reduce maintenance costs increase overall safety by enabling predictive condition-based schedules. In this work, a approach EMAs friction torque estimation is...

View Video Presentation: https://doi.org/10.2514/6.2023-1092.vid Modern aerospace systems integrate a variety of multi-physical components to ensure the high-performance requirements during operational life. The increasing complexity those determines an exponential growth multiple and coupled failure modes difficult predict in advance. This hinders adoption integration new sustainable technologies, for which accurate reliable estimate incipient faults is required prevent catastrophic events....

The architecture of the actuation systems implemented in aeronautics order to actuate flight controls is changing radically and, last years, electromechanical actuators (EMAs) are gradually replacing older type based on hydraulic power. Given that some onboard safety critical, practice monitoring and analyzing system's response (through electrical acquisition) then, provide an evaluation evolution fault has become important task system engineering. To this purpose, a new discipline was born,...

Electromechanical actuators (EMAs) based on Permanent Magnet Synchronous Motors (PMSMs) are currently employed various aircraft systems, and becoming more widespread in safety critical applications. Compared to other electrical machines, PMSM offer a high power weight ratio low cogging: this makes them suited for position control actuation tasks. EMAs several advantages over hydraulic servoactuators, terms of modularity, mechanical simplicity, overall fuel efficiency. At the same time, their...

The complexity of aircraft systems is steadily growing, allowing the machine to perform an increasing number functions; this can result in a multitude possible failure modes, sometimes difficult foresee and detect. A prognostic tool identify early signs faults estimation Remaining Useful Life (RUL) allow adaptively scheduling maintenance interventions, reducing operating costs safety [1-4]. first step for RUL accurate Fault Detection & Identification (FDI) infer system health status,...

Metaheuristic bio inspired algorithms are a wide class of optimization algorithms, which recently saw significant growth due to its effectiveness for the solution complex problems. In this preliminary work, we assess performance two these - Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) prognostic analysis an electro-mechanical flight control actuator, powered by Brushless DC (BLDC) trapezoidal motor. We focus on first step process, consisting in early Fault Detection...

In relatively recent years, electromechanical actuators have gradually replaced systems based on hydraulic power for flight control applications. Electromechanical servosystems are typically operated by electrical machines that transfer rotational to the controlled elements (e.g. aerodynamic surfaces) means of gearings and mechanical transmission. Compared electrohydraulic systems, offer several advantages, such as reduced weight, simplified maintenance complete elimination contaminant,...

Prognostics and health management of electromechanical actuators (EMA) must rely on affordable representative simulation models to be effective in predicting the evolution failures, so identify them before they occur through assessment monitored parameters, leading on-spot maintenance operations. In last years, related modelling monitoring issues are subject a rising attention because design next generation aircraft, based More Electric paradigm. fact, especially aeronautical fields (such as...

Purpose The purpose of this paper is to propose a new simplified numerical model, based on very compact semi-empirical formulation, able simulate the fluid dynamics behaviors an electrohydraulic servovalve taking into account several effects due valve geometry (e.g. flow leakage between spool and sleeve) operating conditions variable supply pressure or water hammer). Design/methodology/approach proposed model simulates performance through representation, deriving from linearized approach...

The growing adoption of electrical energy as a secondary form onboard power leads to an increase electromechanical actuators (EMAs) use in aerospace applications. Therefore, innovative prognostic and diagnostic methodologies are becoming fundamental tool early identify faults propagation, prevent performance degradation, ensure acceptable level safety reliability the system. Furthermore, prognostics entails further advantages, including better ability plan maintenance various equipment,...