Results 131 to 140 of about 7,480 (290)

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao, Xianglong Liang, Wenxiang Deng, Jianyong Yao   +3 more
wiley   +1 more source

Selecta-Piston Hydraulic Actuator

This hydraulic actuator design allows the application requirements of the customer to be matched perfectly with the correct amount of actuator force required to operate their valve in almost every ...
Baker Hughes Company
core  

Robust Position Control of an Electro‐Hydraulic Actuator via Metaheuristic Optimization of a Fractional‐Order PID Controller

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, a robust position control strategy is presented for a two‐stage electro‐hydraulic actuator system using a fractional‐order proportional–integral–derivative (FOPID) controller tuned by Kirchhoff's law algorithm (KLA). Electro‐hydraulic systems exhibit strong nonlinearities, parameter uncertainties, and external disturbances ...
Ridvan Firat Cinar, Davut Izci, Serdar Ekinci, Mohammad Salman, Mohammad Al‐Rabayah, Ali Akdagli, Ali Yildiz, Filiz Karaomerlioglu, Gökhan Yüksek   +8 more
wiley   +1 more source

Quantitative Fault Tolerant Control Design for a Leaking Hydraulic Actuator

, 2010
This paper documents the design of a low-order, fixed-gain, controller that can maintain the positioning performance of an electrohydraulic actuator operating under variable load with a leaking piston seal.
Mark Karpenko, Nariman Sepehri
core   +1 more source

Behavior of a Novel Cyclic Olefin‐Based Hot‐Melt Adhesive in CFRP Adhesive Joints Compared to Conventional Epoxy‐Based Structural Adhesives

Polymer Composites, EarlyView.
Rate‐dependent performance of composite adhesive joints using thermoset and thermoplastic adhesives, in terms of toughness and fatigue behaviour. ABSTRACT A recently developed hot‐melt adhesive (HMA) based on cyclic olefin chemistry, supplied as a transparent, non‐tacky thermoplastic film with a distinctive polymer microstructure, was evaluated in this
Hossein Malekinejad, Ricardo J. C. Carbas, Eduardo A. S. Marques, Lucas F. M. da Silva   +3 more
wiley   +1 more source

Research of electro-hydraulic actuator for mobile hydraulic valve

, 2017
Elektro-hidravlični aktuatorji se uporabljajo za proporcionalno regulacijo pretoka mobilnih ventilov z velikimi kapacitetami. Uporaba mobilno hidravličnih ventilov zaradi enostavnosti ter relativno nizke cene narašča.
Adamlje, Uroš
core  

Prediction of In‐Plane Shear Mechanical Properties Through Degree of Bonding Characterization as a Function of Automated Fiber Placement Processing Parameters for Carbon Fiber/PEKK Composite Laminates

Polymer Composites, EarlyView.
Graphical abstract demonstrating manufacturing process and property characterization used in process modelling of interlaminar behavior across the range of process parameters. ABSTRACT Automated Fiber Placement (AFP) of fiber‐reinforced thermoplastic tapes enables rapid manufacturing by leveraging precise robotic lamination and in situ consolidation ...
Abd‐Elrahman Korayem, Chandra Kishore Reddy Emani, Saratchandra Kundurthi, Karthik Venkatesan, Si Chen, Javed Mapkar, Mahmoodul Haq   +6 more
wiley   +1 more source

Droplet size spectrum, velocity, angle and flow rate of pulse‐width‐modulated spray nozzles with adjuvants

Pest Management Science, EarlyView.
Optimizing PWM performance requires not only appropriate duty cycle selection, but also careful choice of adjuvant formulation tailored to each nozzle type. Drift control agents increased droplet size and reduced fine droplets, mitigating PWM‐induced variability. Decreasing the duty cycle consistently narrowed the spray angle.
João Paulo Arantes Rodrigues da Cunha, Erdal Ozkan, Hongyoung Jeon, Heping Zhu   +3 more
wiley   +1 more source

SYNCHRONOUS HYDROMECHANICAL DRIVE OF MOBILE ACTUATOR AND ITS MATHEMATICAL MODEL

Вестник Донского государственного технического университета, 2018
A synchronous hydromechanical system of the mobile actuator is considered as an example of the brush drive system of the airport sweeper. It is proposed to equip the synchronous hydraulic machine drive with a throttle flow divider of not spool-type ...
Alan Ruslanovich Temirkanov, Alexander Timofeyevich Rybak   +1 more
doaj  

A Conceptual Comparison of Hydraulic and Electric Actuation Systems for a Generic Fighter Aircraft

Aerospace
This paper presents a methodology for evaluating different flight control actuation system architectures in the early conceptual design phase. In particular, this paper shows how hydraulic and electric actuators can be modeled even if very little is ...
Alessandro Dell’Amico, Christopher Reichenwallner   +1 more
doaj   +1 more source