Results 81 to 90 of about 845 (196)

Hydrostatic actuation for wearable robotics

Exoskeletons require energy efficient actuators of low mass and volume (to increase wearability) with controlled output force, sufficient for full gait support. The main research objective of this work was to develop such an actuator.First, the concept of the passive return electro-hydrostatic actuator (PREHydrA) was developed.
openaire   +2 more sources

Thermal Characteristic and Analysis of Electro-Hydrostatic Actuator

IEEE Access
Electro-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, Hao Huang, Yaowen Ge, Xiaoli Zhao, Wenxiang Deng, Guangfa Gao, Jianyong Yao   +6 more
doaj   +1 more source

Degradation Identification of an EHA Piston Pump by Analysis of Load-Holding States

Fluids
In pursuit of advancing the development of more electric aircraft, the present research explores the forefront capabilities of electro-hydrostatic actuators (EHAs) as potential replacements for conventional hydraulic flight control systems.
Yannick Duensing, Amos Merkel, Katharina Schmitz   +2 more
doaj   +1 more source

Mechanism Design and Evaluation of a Threaded Rod-Driven Wheelchair-to-Bed Transformation System

Mehran University Research Journal of Engineering and Technology
This study presents the design and simulation-based evaluation of a low-cost, multifunctional wheelchair-to-bed transformation system powered by a threaded rod mechanism.
Bilal Khan, Mahad Aurangzeb, Mohammad Dawood Farukh, Abdul Muqsit, Komail Lodhi   +4 more
doaj   +1 more source

Optimal energy-saving controller design for an electro-hydrostatic actuator integrated into a wheel loader

Advances in Mechanical Engineering
Electrifying non-road mobile machinery is vital for reducing emissions and improving energy efficiency. Replacing conventional hydraulic systems with electro-hydrostatic actuators is a key step in this transition.
Baoyan Hu, Jian Fu, Yandu Fan, Zheng Fu
doaj   +1 more source

A Machine Learning Model of Electro-Hydrostatic Actuators With the Low-Data Limit and Its Application to Fault Detection

IEEE Access
This paper presents a novel approach for modeling the dynamics of electro-hydrostatic actuators (EHAs) using the sparse identification of nonlinear dynamics (SINDy) algorithm. SINDy is a machine learning algorithm that identifies governing equations from
Soleiman Hosseinpour, Witold Kinsner, Nariman Sepehri   +2 more
doaj   +1 more source

Dynamically Weighted Spatiotemporal Fusion for Deep Learning-Based Prediction of EHA Degradation in Aviation Systems

Sensors
Electro-hydrostatic actuators (EHAs) are increasingly deployed in modern aircraft due to their compact size, fast response, and high power-to-weight ratio.
Tianyuan Guan, Dianrong Gao, Jiangwei Ma, Jing Wu, Yunpeng Yuan, Yun Ji, Jianhua Zhao, Yingna Liang   +7 more
doaj   +1 more source

An Integrated Strategy for Interpretable Fault Diagnosis of UAV EHA DC Drive Circuits Under Early Fault and Imbalanced Data Conditions

Drones
Faults in the DC drive circuit of UAV electro-hydrostatic actuators directly affect the flight safety of a UAV. An integrated learning and Bayesian network-based fault diagnosis strategy is proposed to address the problems of early fault diagnosis, poor ...
Yang Li, Zhen Jia, Jie Liu, Kai Wang, Peng Zhao, Xin Liu, Zhenbao Liu   +6 more
doaj   +1 more source

Research on Parameter Tuning of Electro-Hydrostatic Actuator Position Sliding Mode Controller Based on Enhanced Dynamic Sand Cat Search Optimization Algorithm

Energies
This paper proposes an Enhanced Dynamic Sand Cat Search Optimization algorithm (EDSCSO) designed to address the high-order nonlinearities and strong coupling issues in the parameter tuning of the position sliding mode controller for electro-hydrostatic ...
Weibo Li, Shuai Cao, Xiaoqing Deng, Junjie Chen, Hao Zhang   +4 more
doaj   +1 more source

Review and Proposal for a Classification System of Soft Robots Inspired by Animal Morphology. [PDF]

Biomimetics (Basel), 2023
López-González A, Tejada JC, López-Romero J.   +2 more
europepmc   +1 more source