Modeling and simulation of a hybrid electrohydraulic flight control servomechanism for A380

Vasiliu, Nicolae; Cojocaru-Greblea, Toma; Călinoiu, Constantin; Vasiliu, Daniela; Daniel, Bontos Marius

doi:10.1109/icccc.2018.8390452

Cited by 2 publications

(1 citation statement)

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“…EHA is known for its exceptional attributes including high power density, reliability, and compactness. These characteristics have established EHAs as the preferred choice for modern aircraft [2], [3], and they are also finding increased utilization in various other industrial applications such as wind turbines [4], transport [5], [6], and exoskeleton robots [7], [8]. The elimination of a centralized hydraulic tank in an EHA can lead to heat accumulation within the system.…”

Section: Introductionmentioning

confidence: 99%

Thermal Characteristic and Analysis of Electro-Hydrostatic Actuator

Liu,

Huang,

et al. 2024

IEEE Access

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Electro-hydrostatic actuators (EHAs) are widely used due to their high integration and high power-to-weight ratio. However, the elimination of a centralized oil source in EHAs limits the cooling capacity of the system. Excessively high temperatures can have a significant impact on the performance and lifespan of the EHA. In this paper, firstly, the power loss during energy transfer and heat dissipation characteristics of EHAs are carefully examined. To further study the heat behavior, a one-dimensional simulation model of the EHA thermal-hydraulic system is developed. By comparing the simulation results with experimental data obtained from an actual EHA system, the good agreement between the simulation and experimental results confirms that the developed model can accurately simulate the thermal behavior of EHAs.Based on the validated model, the cooling scheme of EHAs is further explored. The cooling mechanisms of air cooling and phase change heat dissipation are considered to optimize heat dissipation and manage the temperature rise within the EHA. This research provides insights and guidance for the thermal design of EHAs in the early stages to ensure system performance and extend its lifetime.

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