Results 21 to 30 of about 40,379 (295)

Control system modeling of hydraulic actuator with compressible fluid flow [PDF]

open access: yesFME Transactions, 2012
The paper treats Riemann's partial differential equations in the form (1), where variable μ is defined by relation (2). Corresponding boundary conditions are defined in various forms, such as boundary conditions of pressure and flow on the fixed and ...
Janković Jovan J.   +2 more
doaj  

Designing redundant metering valves for hydraulic actuators under mixability and low cost-constraints [PDF]

open access: yes, 2010
This article deals with the design of redundant metering valves for mechanically signalled hydraulic actuators. The final aim of the work is to manufacture a new low-cost valve in replacement of the existing expensive valve with an additional leakage ...
Malburet, François   +3 more
core   +1 more source

Design and Control of a Linear Rotary Electro-Hydraulic Servo Drive Unit

open access: yesApplied Sciences, 2023
In this paper, a new solution for an electro-hydraulic servo drive is proposed, which consists of two electro-hydraulic servo drives: one with a hydraulic cylinder and one with a hydraulic rotary motor.
Andrzej Milecki   +2 more
doaj   +1 more source

A Spatiotemporal Domain-Coupled Clustering Method for Performance Prediction of Cluster Systems

open access: yesActuators
The performance prediction of the Five-hundred-meter Aperture Spherical radio Telescope (FAST) project represents one of the primary challenges faced by the system.
Yirui Zhang   +4 more
doaj   +1 more source

Radiator deployment actuator Patent [PDF]

open access: yes, 1971
Hydraulic actuator design for space deployment of heat ...
Kolstee, H. M., Simpson, W. E.
core   +1 more source

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

open access: yesAdvanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

The Eccentuator: A new concept in actuation [PDF]

open access: yes, 1980
A new concept in actuation for aerospace mechanisms is presented. This actuator, called an 'eccentuator', features unique output characteristics, installation and envelope efficiencies, and relative simplicity.
Musgrove, R. G.
core   +1 more source

Input-output linearization and fractional robust control of a non-linear system [PDF]

open access: yes, 2001
This article deals with the association of a linear robust controller and an input-output linearization feedback for the control of a perturbed and non-linear system.
Lanusse, Patrick   +3 more
core   +1 more source

Transfer Printing and Reconfiguration of Soft Electronics Using Digital Microfluidics and Laser Machining

open access: yesAdvanced Functional Materials, EarlyView.
This paper presents a digital microfluidics‐based technique for transferring and reconfiguring soft nanomembranes. Laser‐machined nanothin membranes are picked up, transported, and aligned via tailored surface tension and the actuation of water droplets, enabling the development of flexible electronics, the integration of functional materials on 3D ...
Quang Anh Nguyen   +15 more
wiley   +1 more source

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

open access: yesJournal 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   +4 more
doaj   +1 more source

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