Development of a Control System for Automating of Spiral Concentrators in Coal Preparation Plants

2010 ◽  
pp. 421-435
Author(s):  
Josh Hoelscher ◽  
Yicheng Pan ◽  
Manoj Mohanty ◽  
Jarlen Don ◽  
Tsuchin Chu ◽  
...  
Keyword(s):  
Control System ◽  
Coal Preparation

scholarly journals Development of an automated process control system for the coal preparation plant

2018 ◽  
Vol 206 ◽  
pp. 012038
Author(s):  
L P Myshlyaev ◽  
G V Makarov ◽  
V V Grachev ◽  
M V Lyakhovets ◽  
K G Wenger ◽  
...  
Keyword(s):  
Control System ◽  
Process Control ◽  
Process Control System ◽  
Coal Preparation ◽  
Automated Process Control System ◽  
Automated Process ◽  
Coal Preparation Plant ◽  
Preparation Plant

The Application of Coal Cleaning Detection System Based on Matlab Image Processing

2012 ◽  
Vol 591-593 ◽  
pp. 1814-1817
Author(s):  
Ji Xian Dong ◽  
Qian Mu
Keyword(s):  
Image Processing ◽  
Feature Selection ◽  
Image Segmentation ◽  
Control System ◽  
Detection System ◽  
Ccd Camera ◽  
Coal Gangue ◽  
Coal Preparation ◽  
Coal Cleaning ◽  
Processing Module

This paper discusses the application of image processing methods in the Coal preparation detection system. The system uses a light source to illuminate the coal and coal gangue, and then captures images with a CCD camera. After that, those images are sent to analyze in the image processing module. The control system sets the jet valve to exclude gangue. For the image processing, the sample images are performed with the help of Matlab, by using the module of preprocessing, image segmentation and feature selection. After analyzing the grayscale histogram of the coal and gangue, the distinction between coal and coal gangue gray threshold are obtained. Finally, the control system compares the gray value and threshold to distinguish coal and gangue, and then excludes gangue to the transportation crawler.

Design of Heavy-Medium Coal Separation Automatic Control System Based on S7-300 PLC

2013 ◽  
Vol 313-314 ◽  
pp. 391-394
Author(s):  
Chang Yong Zhang ◽  
Zhong Jing Zhou
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
System Control ◽  
Coal Preparation ◽  
Control Methods ◽  
Heavy Medium ◽  
Testing Instruments

This paper focuses on the composition of the Heavy-medium coal separation automatic control system, control methods and its functions. Introduced the main testing instruments and actuator in the control system. The system achieved good results in the Tangshan Rongyi Coal Preparation Company.

Design of Heavy Medium Separation Density Control System Based on PLC

2014 ◽  
Vol 986-987 ◽  
pp. 790-793
Author(s):  
Jie Zhang ◽  
Man Rong Xing ◽  
Wen Jie Li
Keyword(s):  
Control System ◽  
Design Method ◽  
Dense Medium ◽  
Coal Preparation ◽  
Practical Application ◽  
Control Laws ◽  
Separation Density ◽  
Density Control ◽  
Heavy Medium ◽  
Reliable Performance

Paper in view of the dense medium coal preparation process control, carefully study the density of heavy medium coal preparation control system of the internal structure, main characteristics, control laws and the design method. Open field bus control structure is adopted in the system, Siemens S7-300 programmable controller is responsible for control, executing agencies responsible for enforcing the orders of the PLC to control the related parameters. Through the practice, this control system is powerful, easy to operate, reliable performance, has certain theoretical significance and practical application value.

A controller for safe, convenient operation of LaB6 emitters on electron-beam instruments

1983 ◽  
Vol 41 ◽  
pp. 408-409
Author(s):  
W. J. Abramson ◽  
H. W. Estry ◽  
L. F. Allard
Keyword(s):  
Electron Beam ◽  
Control System ◽  
Thermal Shock ◽  
Appropriate Care ◽  
Electron Guns ◽  
Tungsten Filaments ◽  
Order Of Magnitude ◽  
Main Components

LaB6 emitters are becoming increasingly popular as direct replacements for tungsten filaments in the electron guns of modern electron-beam instruments. These emitters offer order of magnitude increases in beam brightness, and, with appropriate care in operation, a corresponding increase in source lifetime. They are, however, an order of magnitude more expensive, and may be easily damaged (by improper vacuum conditions and thermal shock) during saturation/desaturation operations. These operations typically require several minutes of an operator's attention, which becomes tedious and subject to error, particularly since the emitter must be cooled during sample exchanges to minimize damage from random vacuum excursions. We have designed a control system for LaBg emitters which relieves the operator of the necessity for manually controlling the emitter power, minimizes the danger of accidental improper operation, and makes the use of these emitters routine on multi-user instruments.Figure 1 is a block schematic of the main components of the control system, and Figure 2 shows the control box.

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