An online data-driven approach for performance prediction of electro-hydrostatic actuator with thermal-hydraulic modeling

Nie, Songlin; Gao, Jianhang; Ma, Zhiyan; Yin, Fanglong; Ji, Hui

doi:10.1016/j.ress.2023.109289

Cited by 6 publications

(4 citation statements)

References 30 publications

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“…Song [ 21 ] proposed a system health assessment model of hydraulic on the basis of the GRNN, established an adaptive health baseline assessment system, and achieved the switching of assessment models and adaptive threshold adjustment under different working conditions. Nie [ 22 ] developed a real-time thermal network modified models innovatively using artificial neural networks, which uses trained models and online data to calibrate parameters and analog the deterioration of online EHA performance, for the health management (PHM) and prognosis (PH) of EHA in real-world operating circumstances.…”

Section: Introductionmentioning

confidence: 99%

Health assessment of an electro-hydraulic servo pump control system for servomotor based on LGA deep neural network

Wang,

Chen,

Liu

et al. 2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

Health assessment of an electro-hydraulic servo pump control system for servomotor based on LGA deep neural network

Wang,

Chen,

Liu

et al. 2024

Heliyon

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“…Elevated temperatures affect the performance of the hydraulic oil, which results in a vicious cycle of increased overheating with a significant loss of viscosity, thinning of the hydraulic oil, increased flow loss, and increased wear on the structure. In addition, high temperatures accelerate the oxidation of the fluid and deterioration of seals, shortening the life of the oil, degrading the performance of the system, and potentially even seriously affecting the healthy operation of the EHA [10], [11].…”

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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“…However, the thermal runaway of EHA is an urgent issue that needs to be addressed [6]. The main reasons for the thermal runaway of EHA are the following: (1) EHA eliminates the central hydraulic source, resulting in a reduction in the specific heat capacity of the EHA system; and (2) EHA has a small heat dissipation area due to its high integration level.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization of a Novel Ribbed Honeycomb Heat Sink for an Electro-Hydrostatic Actuator

Li,

Han,

et al. 2023

Processes

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The electro-hydrostatic actuator (EHA) is a new type of power-by-wire (PBW) actuation system, which is utilized to realize a more electric aircraft. However, EHA suffers from serious thermal problems, due to its high integration and high power density. Therefore, a reasonable heat dissipation structure is an essential method for solving this problem. In this paper, a novel ribbed honeycomb heat sink (RHCS) developed by combining a ribbed heat sink (RHS) with a honeycomb heat sink (HCS) is proposed. Moreover, the optimization of heat sink parameters was achieved by using a multi-objective particle swarm optimization algorithm (MOPSO). Initially, the thermal resistance and mass models of the HCS were constructed, based on which the optimal structural parameters of the honeycomb cell were obtained. In addition, the thermal resistance model of RHCS was constructed using the response surface method, and parameters such as rib spacing, height and width were obtained based on MOPSO. Finally, the heat dissipation capability of RHCS was verified using both a simulation and experimental methods, and the results show that the heat dissipation capability of RHCS is about 15%∼20% higher than that of RHS and 7.4%∼10.3% higher than that of HCS. The configuration and design method of RHCS proposed in this paper provide a solution for the thermal design of EHA.

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An online data-driven approach for performance prediction of electro-hydrostatic actuator with thermal-hydraulic modeling

Cited by 6 publications

References 30 publications

Health assessment of an electro-hydraulic servo pump control system for servomotor based on LGA deep neural network

Health assessment of an electro-hydraulic servo pump control system for servomotor based on LGA deep neural network

Thermal Characteristic and Analysis of Electro-Hydrostatic Actuator

Multi-Objective Optimization of a Novel Ribbed Honeycomb Heat Sink for an Electro-Hydrostatic Actuator

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