Delay Analysis and the Control of Electro-Hydrostatic Actuators
Applied Sciences, 2022 The electro-hydrostatic actuator (EHA) has a high energy density and a compact structure so it is widely used in all/more electric aircraft. To gain energy-saving capability, the hydraulic lock can be applied in the EHA system, which can overcome the ...
Jiaming Zhang +4 more
doaj +2 more sources
Biomimetic Linkage Mechanism Robust Control for Variable Stator Vanes in Aero-Engine [PDF]
BiomimeticsThis work addresses the position tracking control design of the stator vane driven by electro-hydrostatic actuators facing uncertain aerodynamic disturbances.
Qinqin Sun +3 more
doaj +2 more sources
Intelligent Health Assessment of Aviation Bearing Based on Deep Transfer Graph Convolutional Networks under Large Speed Fluctuations [PDF]
Sensors, 2023 As a critical support and fixed component of aero engines, electro-hydrostatic actuators, and other equipment, the operation of aviation bearings is often subject to high speed, high-temperature rise, large load, and other continuous complex fluctuation ...
Xiaoli Zhao +7 more
doaj +2 more sources
Design and Performance Study for Electrothermally Deep-Sea Drive Microunits Using a Paraffin Phase Change Material [PDF]
Micromachines, 2021 Considering the further exploration of the ocean, the requirements for deep-sea operation equipment have increased. Many problems existing in the widely used deep-sea hydraulic system have become increasingly prominent. Compared with the traditional deep-
Dayong Ning +6 more
doaj +2 more sources
Dynamically Weighted Spatiotemporal Fusion for Deep Learning-Based Prediction of EHA Degradation in Aviation Systems [PDF]
SensorsElectro-hydrostatic actuators (EHAs) are increasingly deployed in modern aircraft due to their compact size, fast response, and high power-to-weight ratio.
Tianyuan Guan +7 more
doaj +2 more sources
Thermal Characteristic and Analysis of Electro-Hydrostatic Actuator
IEEE AccessElectro-hydrostatic actuators (EHAs) are widely utilized due to their superior integration and high power-to-weight ratio. However, the elimination of a centralized oil source in EHAs restricts the cooling capacity of the system, leading to potential ...
Jiahui Liu +6 more
doaj +2 more sources
Research on Fault Diagnosis Method of Electro‐Hydrostatic Actuator [PDF]
Shock and Vibration, 2021 Electrohydrostatic actuator is a type of actuator that uses hydraulic energy as the energy transmission carrier, which has the advantages of small size and high power. Since it is commonly used in harsh conditions such as strong vibration, high pressure, and heavy loads, condition monitoring and fault diagnosis of its hydraulic system are particularly ...
Lei Zhufeng +4 more
openaire +2 more sources
Machines, 2022 This paper presents a disturbance-observer-based sliding mode control strategy for an underwater electro-hydrostatic actuator, particularly considering that electro-hydrostatic actuators (EHAs) significantly suffer from sea pressure disturbance, which ...
Yong Nie +6 more
doaj +1 more source
Results of a Feasibility Study of a Prognostic System for Electro-Hydraulic Flight Control Actuators
International Journal of Prognostics and Health Management, 2021 Electro-Hydraulic Servo-Actuators (EHSA) are currently the most used actuation technology for primary flight control systems of civil and military aircrafts. Although some alternatives have emerged in the last decade, such as electromechanical or electro-
Sylvain Autin +3 more
doaj +1 more source
Validation of Aero-Load Estimator for Convair 880 Aircraft Flight Simulator Benchmark with Electro-Hydrostatic Actuators [PDF]
INCAS Bulletin, 2021 Simulating an aircraft model using of high fidelity models of subsystems for its primary and secondary flight control actuators requires measuring or estimating aero-load data acting on flight control surfaces.
Yamina BOUGHARI +4 more
doaj +1 more source