Results 31 to 40 of about 10,781 (143)

Proportional–Integral–Derivative Controller Design Using an Advanced Lévy-Flight Salp Swarm Algorithm for Hydraulic Systems

Energies, 2020
To improve the control ability of proportional−integral−derivative (PID) controllers and increase the stability of force actuator systems, this paper introduces a PID controller based on the self-growing lévy-flight salp swarm algorithm (
Yuqi Fan, Junpeng Shao, Guitao Sun, Xuan Shao   +3 more
doaj   +1 more source

Super-twisting based sliding mode control of hydraulic actuator without velocity state [PDF]

arXiv, 2023
This paper provides a novel surface design and experimental evaluation of a super-twisting algorithm (STA) based control for hydraulic cylinder actuators. The proposed integral sliding surface allows to track a sufficiently smooth reference without using the velocity state which is hardly accessible in the noisy hydraulic systems.
arxiv  

Optimized design and performance testing of hydraulic electrostatic actuator

International Journal of Smart and Nano Materials
Hydraulic electrostatic actuators have become a research hotspot for their inherent flexibility and safety of human-machine interaction. This paper aims to combine the characteristics of dielectric elastomers and fluid actuators, enhancing the dielectric
Yuze Ye, Qingsong He, Changli Yang, Xiaodong Xu, Lin Xie, Diyi Liu, Bo Zeng, Zhijian Leng   +7 more
doaj   +1 more source

Development and application of adjustable electro-hydraulic actuator

You-qi chuyun, 2020
In view of the current situation that adjustable electro-hydraulic actuators for pipeline depend on import, effortshave been made to the localization of adjustable electro-hydraulic actuator to guarantee the safety of national energy, toimprove the ...
Xiliang YANG, Yunfeng SUN, Xiaozheng YANG, Xiguang GAO, Liwen ZHANG, Xiaolong REN, Qingjun YANG   +6 more
doaj   +1 more source

Dual adaptive robust control for uncertain nonlinear active suspension systems actuated by asymmetric electrohydraulic actuators

Journal of Low Frequency Noise, Vibration and Active Control, 2021
This study investigates the vibration control issue of active suspension systems. Unlike previous results that neglect the actuator dynamics or consider the impractical symmetrical hydraulic cylinder model, this paper incorporates more reasonable ...
Dingxuan Zhao, Miaomiao Du, Tao Ni, Mingde Gong, Lizhe Ma   +4 more
doaj   +1 more source

Bionic driving method of multi-actuator hydraulic synchronization system based on wild goose cluster flight principle

Advances in Mechanical Engineering
Heavy equipment is often driven synchronously by multi-actuator hydraulic system. However, when the load deviation of the actuators is large, such systems exhibit serious energy loss and inferior synchronization performance.
Wang Weiping, Zhou Xinyi, Lu Shun
doaj   +1 more source

Energy and Operation Characteristics of Electric Excavator With Innovative Hydraulic-Electric Dual Power Drive Boom System

IEEE Access, 2023
In the existing electric excavators, the energy efficiency of the hydraulic system is less than 30% due to a large amount of throttling loss and waste of potential energy.
Yunxiao Hao, Long Quan, Shufei Qiao, Lei Ge, Zepeng Li, Bin Zhao   +5 more
doaj   +1 more source

Comparative efficiency testing of a composite hydraulic cylinder

Aviation
The paper points to the increasing use of composite materials in hydraulic components. This entails many benefits, such as weight reduction which is particularly important in aviation. However, new problems arise with the use of new materials.
Michał Stosiak, Marek Lubecki, Michał Banaś   +2 more
doaj   +1 more source

Hybrid Actuator Design for a Gait Augmentation Wearable [PDF]

, 2020
We describe a fluidic actuator design that replaces the sealed chamber of a hydraulic cylinder using a soft actuator to provide compliant linear compression with a large force ($\geq$100 N) at a low operation pressure ($\leq$50 kPa) for a lower-limb wearable.
arxiv   +1 more source

Design and control of a hydraulic composite actuator for vibration simulation

Advances in Mechanical Engineering, 2018
A hydraulic composite actuator is developed for vibration simulation. The hydraulic scheme and control principle are introduced and an open–closed-loop iterative learning control method is proposed for control issue.
Jianlin Xuan, Shoukun Wang, Hu Liu
doaj   +1 more source