Method of Investigating Dynamic Operating Modes of Electrohydraulic Drive Systems with Movable Boundaries of Working Fluids

2018 ◽  
pp. 359-366
Author(s):  
A. I. Ozerskij ◽  
N. A. Tseligorov
Keyword(s):  
Working Fluids ◽  
Operating Modes ◽  
Dynamic Operating ◽  
Electrohydraulic Drive ◽  
Drive Systems

scholarly journals The method of dynamic operating modes investigation in electrohydraulic drive systems with improved accuracy of positioning executive elements

2018 ◽  
Vol 226 ◽  
pp. 04024
Author(s):  
Valeriy V. Grechikhin ◽  
Galina A. Galka ◽  
Anatoliy I. Ozerskiy ◽  
Mikhail E. Shoshiashvili
Keyword(s):  
Mutual Influence ◽  
Hydraulic Drive ◽  
Joint Work ◽  
Operating Modes ◽  
Hydraulic Machines ◽  
Dynamic Operating ◽  
Electrohydraulic Drive ◽  
Drive Systems ◽  
Improved Accuracy ◽  
Executive Elements

The article describes the method of dynamic operating modes investigation in electrohydraulic drive systems with improved accuracy of positioning output element. The method is the evolution of the fundamental positions of the mechanics of continuous media with moving boundaries as applied to the research of non-stationary processes accompanying the operation of hydraulic drive systems with piston hydraulic machines. The method is based on generalized modeling (technical, physical, mathematical and computer), takes into account the peculiarities of mutual influence of electric and hydraulic machines during their joint work as part of the electrohydraulic drive, which raises the level and adequacy of actuators simulation, as well as the reliability of the assessment of their technical condition. The method extends the field of research, improves the accuracy of the calculation of the positioning of the executive elements, taking into account the different dynamic modes of the drives under study.

Long-Length Fiber Optic Near-Infrared (NIR) Spectroscopy Probes for On-Line Quality Control of Processed Land Animal Proteins

2018 ◽  
Vol 72 (8) ◽  
pp. 1170-1182 ◽  
Author(s):  
Ana Garrido-Varo ◽  
Ana Sánchez-Bonilla ◽  
Francisco Maroto-Molina ◽  
Cecilia Riccioli ◽  
Dolores Pérez-Marín
Keyword(s):  
Near Infrared ◽  
Fiber Optic ◽  
Nir Spectroscopy ◽  
Conveyor Belt ◽  
Animal Origin ◽  
Processing Plant ◽  
Fiber Optic Cable ◽  
Operating Modes ◽  
On Line ◽  
Dynamic Operating

This research was conducted using a spectral database comprising 346 samples of processed animal proteins (PAPs) with a range of compositions, analyzed using a Fourier transform near-infrared spectroscopy multichannel instrument (Matrix-F, Bruker Optics) coupled to a 100 m fiber optic cable. Using both its static and dynamic operating modes (on a conveyor belt), simulating the movement of the product in the plant, the predictive capabilities of both modes of analysis were assessed and compared, for the purposes of predicting moisture, protein, and ashes. The results show that both exhibit highly similar degrees of precision and accuracy for predicting these parameters. This research provides a foundation of scientific-technical knowledge, hitherto unknown, regarding the “on-line” incorporation of an instrument (equipped with a 100 m fiber optic cable) into a processing plant of by-products of animal origin.

Tristate liquid crystal display with memory and dynamic operating modes

2006 ◽  
Vol 89 (12) ◽  
pp. 123507 ◽  
Author(s):  
Chul Gyu Jhun ◽  
Chao Ping Chen ◽  
Uk Joo Lee ◽  
Seong Ryong Lee ◽  
Tae-Hoon Yoon ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Operating Modes ◽  
Dynamic Operating ◽  
With Memory

GAS DYNAMIC OPERATING MODES OF LOW PRESSURE GAS NETWORKS DURING TRANSPORT GAS-HYDROGEN MIXTURES

2017 ◽  
Author(s):  
Mariia Serediuk ◽  
Keyword(s):  
Volume Fraction ◽  
Chemical Properties ◽  
Low Pressure ◽  
Gas Networks ◽  
Operating Modes ◽  
Gas Dynamic ◽  
Dynamic Operating ◽  
Hydrogen Mixtures ◽  
Physical And Chemical ◽  
Gas Supply

By means of mathematical modeling the patterns of change the physical and chemical properties, necessary for calculations the gas networks of low pressure, for gas-hydrogen mixtures with volume fraction of hydrogen from zero to 100 % were found. The regularities of gas-dynamic calculations of lowpressure steel gas networks in the case of transportation of gas-hydrogen mixtures with different volume fraction of hydrogen while maintaining the costs and energy consumption of the elements of the gas supply system, typical for the transportation of natural gas were established.

Analysis of the dynamic operating modes of the verticalization system of the universal launch complex for a promising super-heavy ILV

2021 ◽  
Author(s):  
V.G. Zotov ◽  
A.O. Nikitin ◽  
A.V. Yazykov
Keyword(s):  
Dynamic Loading ◽  
Space Exploration ◽  
Dynamic Loads ◽  
Dynamic Processes ◽  
Original Design ◽  
Operating Modes ◽  
Unit Structure ◽  
Deep Space Exploration ◽  
Space Rocket ◽  
Dynamic Operating

The paper presents the results of the analysis of the dynamic processes occurring at different stages of the operation of the installation unit of the super-heavy-class space rocket complex for one of the options for completing the Yenisei space rocket, intended for both the implementation of the lunar program and deep space exploration. Verticalization and installation of the ILV under consideration on the launch pad is carried out by a lifting and installation unit of an original design. The main feature of this unit is the presence of two tilting axes. The considered type of installation unit has not previously been used in domestic complexes for ILV. Despite some similarities of such a unit with a classic installer with lifting frame, in the course of its operation, specific operating modes arise with increased dynamic loading of the unit structure and the lifted product. The calculations made it possible to propose constructive solutions that ensure a decrease in dynamic loads on a space rocket during verticalization and installation on a launch pad.

scholarly journals Computer Simulation of the Dynamic Operating Modes of Thermoelectric Device for Cryodestruction

2017 ◽  
Vol 18 (4) ◽  
pp. 455-459
Author(s):  
L. I. Anatychuk ◽  
L. M. Vikhor ◽  
R. R. Kobylianskyi ◽  
T. Ya. Kadeniuk
Keyword(s):  
Computer Simulation ◽  
Local Area ◽  
Time Function ◽  
Optimal Time ◽  
Thermoelectric Device ◽  
Operating Modes ◽  
Cyclic Temperature ◽  
Dynamic Operating ◽  
Optimal Dynamic ◽  
Supply Current

This paper presents the results of computer simulation of optimal dynamic modes of thermoelectric device for cryodestruction. The optimal time function for controlling the supply current to thermoelectric micromodule in a device for cryodestruction is determined, which ensures given cyclic temperature effect on the local area of human body.

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