scholarly journals Construction and application of a high precision 3D simulation model for geomechanics of the complex coal seam

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lijuan Zhao ◽  
Meichen Zhang ◽  
Xin Jin
Keyword(s):  
Coal Seam ◽  
Simulation Model ◽  
Real Time ◽  
High Precision ◽  
3D Simulation ◽  
Time Sharing ◽  
The Real ◽  
Coal Cutting ◽  
3D Simulation Model ◽  
Program Interface

AbstractThe high-precision 3D simulation model for geomechanics of a complex coal seam is the necessary premise for the research on intelligent shearer and unmanned mining. However, at present, a simulation model for geomechanics of a complex coal seam generally has the problems of simplifying complex geological structures and low accuracy for structures. In order to meet the needs of a coal seam simulation model in the mining process of an intelligent shearer, it is necessary to optimize the simplified model of a coal seam. Therefore, based on a 3D simplified simulation model constructed with discrete element technology, the complex coal seam application plug-in was compiled with the help of an Application Program Interface. Moreover, according to the geological characteristics, new attributes were added to the structures to complete the construction of the model of a complex coal seam. Finally, the model was verified with laboratory experiments. The results showed that the high-precision 3D simulation model for geomechanics of a complex coal seam effectively improved the accuracy of the modeling. The real-time transmission and the real-time sharing of multi-source data were realized by considering the 3D simulation model for geomechanics of a complex coal seam as the core. Additionally, the purpose of the real-time sensing of the coal cutting state was achieved in order to lay the foundation for the realization of unmanned mining.

High Precision Timing of the Copying Control System Based on Windows 2000

2009 ◽  
Vol 626-627 ◽  
pp. 87-92
Author(s):  
X.H. Lu ◽  
Zhen Yuan Jia ◽  
Y.Z. Lv ◽  
J.Y. Yang
Keyword(s):  
Operating System ◽  
Control System ◽  
Real Time ◽  
High Precision ◽  
High Frequency ◽  
Timing Error ◽  
The Real ◽  
Timing Function ◽  
Design Proposal ◽  
Windows 2000

A design proposal for developing a high-precision timer of the real-time digital copying control system is put forward by analyzing the real-time characteristics of Windows 2000 operating system. Proposals of using information systems timer—WM_TIMER, multimedia timer, VxD and hardware to achieve high-precision timing in Windows operating system are analyzed and compared. Based on computer high-frequency timer and multi-thread technology, timing function provided by Microsoft Visual C++ is used to achieve a high-precision software timer of the system. Finally, the researched timing method is tested in Advantech IPC-610 host with Intel Pentium 4 processor, and the maximum timing error is less than 5μs which meets the system timing requirements.

Study on Hardware-in-the-Loop-Simulation of Hydroturbine Governing System

2010 ◽  
Vol 39 ◽  
pp. 395-398 ◽  
Author(s):  
Hai Hui Song ◽  
Yun Min Xie ◽  
Wei You Cai
Keyword(s):  
Simulation Model ◽  
Real Time ◽  
Hardware In The Loop ◽  
Real Time Simulation ◽  
Testing Platform ◽  
The Real ◽  
Governing System ◽  
Time Simulation

This paper introduces a testing mothod about hydroturbine governing system based on dSPACE hardware-in-the-loop-simulation. PID parameters are adjusted by hardware-in-the-loop -simulation. The results of the simulation show that it can provide simple, intuitive simulation model, and make parameters adjusting more intuitive and easier. The validity of the testing platform have been testified by the results of real-time simulation and hardware-in-the-loop-simulation. The superiority of controldesk in the real-time simulation is prominent.

scholarly journals Building of Turbiditic Gas Field Dynamic Model with a Simplified 3D Simulation Software

2018 ◽  
Vol 3 (3) ◽  
pp. 141
Author(s):  
Octria Adi Prasojo ◽  
Vladimir Alejandro Choque Flores ◽  
Matthieu Plantevin ◽  
Reza Syahputra
Keyword(s):  
Simulation Model ◽  
History Matching ◽  
Structural Model ◽  
Simulation Software ◽  
3D Simulation ◽  
Well Testing ◽  
Data Quality Control ◽  
Reservoir Properties ◽  
Gas Field ◽  
3D Simulation Model

This study provides a novel approach of building 3D simulation model with extremely shorter time needed using Rubis simulation software from Kappa Engineering. The study focused on X Field that is located in a turbiditic setting, mainly consisted of separated channel bodies filled with gas, located in a slope apron or passive continental margin of Mahakam Delta. Methods of the study is quite contradictive with common reservoir simulation where it includes data integration, data quality control, model geometry building, reservoir properties distribution, and is followed by wells definition to build the 3D simulation model. Afterward, the reliability of the structural model was checked by the volume calculation for each segment from GeoX model where all dynamic and static data used in the simulation were checked using history matching data derived from well-testing. In conclusion, simulation was run and X Field will be producing for 23 years with 3 years and 10 months plateau rate. Where the static and dynamic data are already provided, the simulation conducted here was very beneficial during the exploration phase of a gas field where the whole process of modeling and simulation could be done only for 3 to 6 months.

SPC-Based Real-Time Control Method for CNC Machining Quality

2010 ◽  
Vol 42 ◽  
pp. 263-267
Author(s):  
Xin Long Kang ◽  
Dong Man Yu ◽  
Xue Ling Yang ◽  
Di Wang
Keyword(s):  
Real Time ◽  
High Precision ◽  
Control Method ◽  
Cnc Machining ◽  
Machining Process ◽  
Real Time Control ◽  
The Real ◽  
Machining Quality ◽  
Time Control ◽  
Process System

This paper presents the methods and applications for the real-time control of CNC machining process quality in detail and clarifies the objectives of SPC for CNC machining, in order to enhance the understanding of the factors that cause instability to process system. Also, this paper adopts the methods and procedures for SPC to effectively serve the production of high-precision products for enterprises, in order to meet customers’ requirements and expectations.

scholarly journals Assessing the protective effect of mountain forests against rockfall using a 3D simulation model

2006 ◽  
Vol 225 (1-3) ◽  
pp. 113-122 ◽  
Author(s):  
Markus Stoffel ◽  
André Wehrli ◽  
Roderick Kühne ◽  
Luuk K.A. Dorren ◽  
Simone Perret ◽  
...  
Keyword(s):  
Protective Effect ◽  
Simulation Model ◽  
3D Simulation ◽  
Mountain Forests ◽  
3D Simulation Model
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