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Hydraulics and hydraulic pneumatic drive. Hydraulics.
2023The textbook outlines the basic laws of equilibrium and fluid motion in closed channels. The methods of using these laws in engineering calculations are considered, as well as recommendations for the design of individual elements of hydraulic systems are given.
Aleksandr Lepeshkin +4 more
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Technological Advances in Hydraulic Drive Trains for Wind Turbines [PDF]
Energy Procedia, 2012 The reliability of frequency converters is a major concern for wind turbines. ChapDrive AS has built and tested a hydraulic drive train for variable speed wind turbines which includes a synchronous generator that is connected to the grid without the use ...
Niss, M.O.K. +3 more
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On the Dynamic Behavior of Servo-Hydraulic Drives
Nonlinear Dynamics, 1998A servo-hydraulic drive for position control with a flapper-nozzle type servo-valve is described by a 10th-order, non-linear system of ODEs. This system is partially singularly perturbed. The perturbation stems from the compressibility of the hydraulic fluid and the fast dynamics of some sub-systems of the valve.
Scheidl, R., Manhartsgruber, B.
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Verified simulation of a hydraulic drive
Proceedings of the First Workshop on Robot Motion and Control. RoMoCo'99 (Cat. No.99EX353), 1999To obtain reliable simulation results in the context of uncertain data and error propagation we use interval arithmetics and a self acting error calculus, and apply these methods to a hydraulic driven elastic robot. We describe a new explicit Sugeno-Takagi fuzzy model representation of a hydraulic differential cylinder with servo valve and show that a ...
D. Fansten, T. Mollers, H. Traczinski
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1984
In automation in general and robotics in particular, the use of computerized hydraulic drive control systems is quite common.
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In automation in general and robotics in particular, the use of computerized hydraulic drive control systems is quite common.
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Adaptive Hydraulic Drive of Manipulator
Applied Mechanics and Materials, 2016At present in manipulators the hydraulic drives with one degree of freedom are used. Such drive provides single-valued function of constraint between input and output links motion. However for overcoming of variable force of resistance it is necessary to use the variable transfer ratio between input and output links. The adjustable drive should contain
Konstantin Samson Ivanov +1 more
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Regulation of Hydraulic Pumps in the Drive System of Hydraulic Excavators
Proceedings SAUM 2024The paper presents the results of the conducted researches related to the analysis of the parameters of the drive system, the crawler hydraulic excavator, with hydraulic pumps with collective regulation according to the criterion of constant hydraulic power and the regulator of ideal hyperbolic characteristics.
Vesna Jovanović +3 more
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Digital Hydraulic Winch Drives
BATH/ASME 2018 Symposium on Fluid Power and Motion Control, 2018This paper presents the planned use of digital displacement high torque low speed motors to drive large winches in off-shore and maritime applications. The digital displacement technology uses forced actuation of high- and low pressure valves for each cylinder chamber, i.e.
Henrik B. Larsen +3 more
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ENERGY SAVING IN HYDRAULIC DRIVES
COLLECTION OF SCIENTIFIC PAPERSThe article discusses various ways to save energy in the hydraulic drive. To do this, you need to study various methods energy saving, including throttling, changes in working volumes pumps and motors, the use of an adjustable pump and throttle flow regulator, as well as study methods of energy recovery in hydraulic drives.
A.Y. Pelipenko +4 more
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A hydraulic drive of booster pumps
Thermal Engineering, 2007A proposal is made to use a hydraulic turbine as a drive for booster pumps in the feedwater systems of supercritical-pressure boilers.
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