Zobrazeno 1 - 10
of 228
pro vyhledávání: '"MAO Qinghua"'
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 135-143 (2024)
Currently, PID control method is mainly used for the pitch control of coal mine roadheader, and the control precision is not high in the case of time-varying and nonlinear hydraulic system during the pitch control of roadheader. The pitch control of
Externí odkaz:
https://doaj.org/article/284296397e3b4f948553e4f4421a10a3
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 2, Pp 18-27 (2024)
In the process of path planning for tracked directional drilling rigs in coal mines, there are constraints on the body volume and the demand for driving efficiency in actual scenarios. However, the commonly used A* algorithm has slow search speed, mu
Externí odkaz:
https://doaj.org/article/935ea287dcb7482883d72ded8b669d64
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 9, Pp 36-46 (2023)
Traditional belt conveyor abnormal state recognition uses manual inspection or mechanical comprehensive protection system for detection. The manual inspection is labor-intensive, inefficient, and difficult to accurately detect faults. Mechanical comp
Externí odkaz:
https://doaj.org/article/e995a45ee9be454ea88da17c21530d21
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 2, Pp 390-399 (2023)
The optical fiber inertial navigation of coal mine excavation equipment is easy to be disturbed by multi-source heterogeneous noise such as vibration and electromagnetism in the underground excavation face, which leads to the reduction of the accurac
Externí odkaz:
https://doaj.org/article/03dac43525fa4164918c6363bdc135c3
Publikováno v:
Frontiers in Sustainable Food Systems, Vol 7 (2023)
IntroductionIn recent years, the combination of the public health crisis and the climate crisis has greatly weakened the resilience of food systems. The Belt and Road food cooperation will make outstanding contributions to consolidate food security a
Externí odkaz:
https://doaj.org/article/b832a82bcc8147d38e0df16388b008b3
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 12, Pp 26-32 (2022)
The coal flow of the belt conveyor will be mixed with anchor rod, angle iron, wood, gangue, and lump coal. This will easily lead to the tearing of the conveyor belt, the blockage of the transition and even the breakage of the belt. It is difficult fo
Externí odkaz:
https://doaj.org/article/2e0e93cc08864c7c949c2cbaebfefdb2
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 12, Pp 16-25 (2022)
The problem of low detection accuracy of driving displacement exists in the driving process of anchor digging robots. In order to solve the above problem, taking the supporting bolt as the positioning benchmark, by analyzing the distance relationship
Externí odkaz:
https://doaj.org/article/448f99d6e01148708d763bb8b90e72aa
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 12, Pp 33-41 (2022)
Machine vision has a certain theoretical basis in target detection and recognition for sorting robot of coal mine belt conveyor. But current target recognition of sorting robot of coal mine belt conveyor is mainly aimed at coal-gangue recognition. Th
Externí odkaz:
https://doaj.org/article/fc1ae2d6681e403492266d3ef8a0db12
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 8, Pp 107-113 (2022)
The sorting reliability of the gangue sorting robot is closely related to coal quality and sorting efficiency. It is necessary to study the sorting reliability of the sorting robot system. The existing reliability research of robot system mainly focu
Externí odkaz:
https://doaj.org/article/4bb1e3daba5b4cfab887529dfb296b92
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 3, Pp 63-70 (2022)
At present, most of the positioning methods of underground tunneling equipment in coal mines adopt single auxiliary measurement methods such as machine vision, odometer and total station to combine with inertial navigation measurement to suppress the
Externí odkaz:
https://doaj.org/article/5c589004ac374c72823a14efb424ab7a