Results 131 to 140 of about 477,598 (318)

Hydraulic accumulator fault diagnosis using LSTM neural networks

Modeling, Identification and Control: A Norwegian Research Bulletin
The maintenance costs associated with offshore wind turbines, particularly those related to logistics and system downtimes, are significantly influenced by the reliability of hydraulic components, especially the pitch control system. Accumulator failures, which constitute a notable percentage of system faults, often result from gas leakage and pressure
Olszewski, P., Pajuro, K. F., Hansen, L. B., Ramos, L. S., Odena, M. K., Liniger, J.; id_orcid 0000-0001-8775-3918   +5 more
openaire   +3 more sources

The Solid Rocket Booster Auxiliary Power Unit: Meeting the Challenge [PDF]

The thrust vector control systems of the solid rocket boosters are turbine-powered, electrically controlled hydraulic systems which function through hydraulic actuators to gimbal the nozzles of the solid rocket boosters and provide vehicle steering for ...
Hughes, R. W.
core   +1 more source

A Computational Approach for Biomimetic Design of Liver‐On‐A‐Chip

Advanced Intelligent Discovery, EarlyView.
A biomimetic liver‐on‐a‐chip with antiparallel perfusion was designed using COMSOL‐guided simulation to replicate hepatic acinus transport. Full‐scale modelling revealed diffusion‐dominated, length‐dependent nutrient gradients and low‐shear conditions.
Zhenxu Yang, Qiankun Yin, Qingxin Liu, Zhejun Xu, Ye Zhang, Christopher Vega‐Sánchez, Xiaochen Liu, Daniele Vigolo, Jiao Jiao Li, Ken‐Tye Yong   +9 more
wiley   +1 more source

Testing of improved polyimide actuator rod seals at high temperature and under vacuum conditions for use in advanced aircraft hydraulic systems [PDF]

Polyimide second-stage rod seals were evaluated to determine their suitability for applications in space station environments. The 6.35-cm (2.5-in.)K-section seal was verified for thermal cycling operation between room temperature and 478 K (400 F) and ...
Nelson, W. G., Sellereite, B. K., Waterman, A. W.   +2 more
core   +1 more source

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source

A Mathematical Formulation of Mobile Forage Harvester Adapters Balance System with Hydropneumatic Accumulator Application

Механика машин, механизмов и материалов, 2014
A mathematical formulation of the balancing adapters lever mechanism in the mobile forage harvester by a vectorial method and the mathematical formulation of a system: hydraulic ram - hydropneumatic accumulator for an accumulator unit with the same and ...
O.V. Rekhlitski, Yu.V. Chuprynin
doaj  

Impact performance optimization for hydraulic rock drill based on stroke and flow compensation factors

Advances in Mechanical Engineering
In response to the issues of overheating of the shell and insufficient impact energy of the hydraulic rock drill, this paper focuses on the hydraulic rock drill with alternating front and rear return chambers. By establishing nonlinear and linear dynamic
Siyuan Chang, Min Ye, Daqing Zhang, Yuchuan Ma, Jiale Zhang   +4 more
doaj   +1 more source

Computational Study of Hydraulic Accumulators

, 2018
The scope of this project is to make a CFD model to be used for getting a better understanding of accumulator discharge. To be able to establish the models credibility is there a need for validation of the models developed. First a model of one accumulator is to be validated by use of an experimental project as well as an analytical approach.
openaire   +1 more source

Simulation verification techniques study: Simulation performance validation techniques document [PDF]

Techniques and support software for the efficient performance of simulation validation are discussed. Overall validation software structure, the performance of validation at various levels of simulation integration, guidelines for check case formulation,
Duncan, L. M., Reddell, J. P., Schoonmaker, P. B.   +2 more
core   +1 more source

A Review on Recent Trends of Bioinspired Soft Robotics: Actuators, Control Methods, Materials Selection, Sensors, Challenges, and Future Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This article reviews the current state of bioinspired soft robotics. The article discusses soft actuators, soft sensors, materials selection, and control methods used in bioinspired soft robotics. It also highlights the challenges and future prospects of this field.
Abhirup Sarker, Tamzid Ul Islam, Md. Robiul Islam   +2 more
wiley   +1 more source