Results 31 to 40 of about 66,002 (291)

Research on state perception and analysis technology of hydraulic support in fully mechanized working face

open access: yesGong-kuang zidonghua, 2023
The intelligence of fully mechanized working face is a key link in the intelligence of coal mines. The perception and analysis of hydraulic support state is the premise and foundation of intelligent control of fully mechanized working face.
LI Jian, REN Huaiwei, GONG Shixin
doaj   +1 more source

Study on the fast fluid supply and return scheme of hydraulic support column in fully mechanized working face

open access: yesGong-kuang zidonghua, 2021
The hydraulic support automatic follow-up control should have the performance of high support, fast support moving, large moving distance, etc. Among these performance, under the premise of ensuring stope safety, shortening the time of working face empty
ZHOU Rulin, QIAO Zishi, MENG Lingyu
doaj   +1 more source

Hydraulic support digital twin joint modeling method

open access: yes, 2022
The existing hydraulic support modeling method has the problems of single modeling mode and lack expression of internal actions of the model. It is difficult to realize deep knowledge mining of the digital twin model.
WU Yadan, CHEN Long, WANG Hongwei
core   +1 more source

Intelligent cooperative control of hydraulic support inspired by driveless car

open access: yesGong-kuang zidonghua, 2020
For problems such as low control accuracy, poor coordination and uneven pushing of hydraulic support in fully-mechanized coal mining face, an intelligent cooperative control method of hydraulic support is proposed based on driverless car technology ...
NIU Jianfeng
doaj   +1 more source

Hydraulic Scale Modeling of Mass Oscillations in a Pumped Storage Plant with Multiple Surge Tanks

open access: yes, 2022
As power systems include more intermittent renewable energy sources, energy storage solutions are needed to support them. Pumped hydro is a reliable alternative for long-term energy storage. A solution for bringing more pumped hydro into the power system
Cervantes, Michel,   +3 more
core   +1 more source

Research on the hydraulic support top beam based on dynamic load bearing

open access: yesFrontiers in Earth Science, 2023
Introduction: Aiming at the problem of structural damage of top beam and column in the actual bearing process of top coal caving hydraulic support caused by uneven roof pressure in the process of fully mechanized caving mining in thick coal seam coal ...
Lianmin Cao   +4 more
doaj   +1 more source

Dynamic evaluation of support quality of hydraulic support in space-time region

open access: yes, 2022
The support process of hydraulic support is a dynamic change process in time and space regions. At present, the evaluation of support quality of hydraulic support mostly focuses on the static characteristics of support.
FU Xiang   +4 more
core   +1 more source

Cooperative control technology of shear and hydraulic support on fully-mechanized coal mining face

open access: yesGong-kuang zidonghua, 2020
Aiming at low cooperative control efficiency of shearer and hydraulic support on fully-mechanized coal mining face, a cooperative control technology of shearer and hydraulic support on fully-mechanized coal mining face was proposed based on technologies ...
LIU Qing   +3 more
doaj   +1 more source

Research on the dynamic law of automatic following of hydraulic support

open access: yesGong-kuang zidonghua, 2023
Currently, research on the automatic following of hydraulic support in fully mechanized working faces focuses on controlling the movement of hydraulic support based on external environmental variables.
REN Huaiwei   +5 more
doaj   +1 more source

Fault detection and diagnosis method for bus communication in hydraulic support electro-hydraulic control system

open access: yesGong-kuang zidonghua, 2023
The communication system is the channel and bridge for information transmission in the hydraulic support electro-hydraulic control system of the fully mechanized mining face. Currently, CAN bus is commonly used as the communication bus. It is susceptible
YANG Yongkai   +7 more
doaj   +1 more source

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