Vol 68 No 1
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Date submitted1974-07-25
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Date accepted1974-09-23
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Date published1975-01-01
Phase conductometer
- Authors:
- E. S. Krichevsky
- A. I. Nudelman
Changes in the conductivity of an electric circuit section are widely used for measuring ash content, moisture content, salt content and other parameters of solid, liquid and bulk materials; this allowed the practical realization of a number of measuring devices and systems that have found wide application in chemical, mining and metallurgical and other industries, as well as in energy and the practice of scientific research. ...
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Date submitted1974-07-18
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Date accepted1974-09-26
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Date published1975-01-01
Influence of increase of accuracy of automatic control systems of concentrate drying process on their economic efficiency
- Authors:
- V. V. Stalsky
- S. V. Storozhenko
Widespread at concentrating plants process of concentrate drying in rotating drying drums is a very complex object of automatic control. ...
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Date submitted1974-07-16
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Date accepted1974-09-29
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Date published1975-01-01
About convection-diffusion dynamic model of apatite flotation process
- Authors:
- V. I. Zlatkin
In the works of a number of researchers it is shown that a satisfactory mathematical description of direct flow flotation machines cannot be obtained without taking into account the effect of longitudinal mixing of the pulp, which is equivalent to turbulent diffusion and leads to an equation of the form...
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Date submitted1974-07-23
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Date accepted1974-09-08
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Date published1975-01-01
Compensation of dielectric losses of capacitive moisture sensor in F-meter circuits
- Authors:
- V. G. Valeev
- E. S. Krichevsky
- A. F. Avdeeva
In resonant methods of moisture control, a capacitive sensor with the analysed material is in some cases included in the oscillating circuit of an autogenerator. ...
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Date submitted1974-07-09
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Date accepted1974-09-10
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Date published1975-01-01
On the choice of construction materials for sensors of continuous high-frequency moisture control
- Authors:
- V. P. Terekhov
- S. S. Galushkin
In the course of long-term operation of continuous moisture-metric systems developed at the Department of Automation of Production Processes of the Leningrad Mining Institute, a significant influence on their operation of the wear of the base and working electrodes of the sensor. ...
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Date submitted1974-07-06
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Date accepted1974-09-27
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Date published1975-01-01
Synthesis of automatic control system of drying process in rotating drying drum
- Authors:
- V. G. Deych
- V. V. Stalsky
- S. V. Storozhenko
The drying drum as an object of automatic control was considered earlier. ...
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Date submitted1974-07-30
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Date accepted1974-09-13
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Date published1975-01-01
Modeling of apatite flotation process based on convection-diffusion mathematical model
- Authors:
- V. I. Zlatkin
- A. N. Makovsky
The task of full automation of the process of flotation of apatite-nepheline ores turns out to be very difficult for a number of reasons. ...
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Date submitted1974-07-12
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Date accepted1974-09-14
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Date published1975-01-01
Expansion of limits and increase of measurement accuracy of high-frequency moisture meters on the basis of E12-1A type capacitance meter
- Authors:
- E. A. Kalm
- V. G. Valeev
At discrete express control of moisture dispersed materials in some cases use devices made on the basis of the device E12-1A, a simplified scheme of which is shown in Figure 1. ...
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Date submitted1974-07-28
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Date accepted1974-09-29
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Date published1975-01-01
Calculation and adjustment of temperature compensation circuits on varicaps for capacitive high-frequency moisture measuring systems
- Authors:
- R. M. Proskuryakov
- V. P. Terekhov
When building temperature compensation schemes in capacitive moisture-metric systems, it is necessary to take into account that the change in the temperature coefficient of capacitance (TCE) of the controlled material may have a different character depending on its moisture. ...
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Date submitted1974-07-15
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Date accepted1974-09-12
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Date published1975-01-01
Strain-measuring shoes for dynamic control of vertical shaft reinforcement
- Authors:
- E. K. Kersky
With the increase in the specific weight of deep vertical shafts in the mining industry and the corresponding increase in the speed of movement of lifting vessels and their load capacity, conductors became subjected to dangerous shock loads associated with the interaction of the lifting vessel with the shaft reinforcement. ...
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Date submitted1974-07-22
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Date accepted1974-09-03
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Date published1975-01-01
Automatic motion control of a mining roadheader using a laser
- Authors:
- V. I. Shcherbina
In the process of operation, mining roadheaders tend to deviate from the set direction. This is caused by mining and geologic conditions, machine design, peculiarities of operation. ...
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Date submitted1974-07-02
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Date accepted1974-09-10
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Date published1975-01-01
Application of thermoresistance in the compensation circuit of F-meter type moisture meter
In a discrete moisture-metric system of F-meter type the whole set of measurements by the capacitive component is brought to the graduation temperature in accordance with the temperature coefficient of the capacitance of the measured material...
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Date submitted1974-07-06
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Date accepted1974-09-09
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Date published1975-01-01
Analysis of phosphorite concentrate pulp density by capacitive method
- Authors:
- E. V. Zhilkina
The density of liquid products in mineral processing is the most important parameter by means of which it is possible to influence and control the course of technological processes. ...
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Date submitted1974-07-21
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Date accepted1974-09-13
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Date published1975-01-01
Statistical research of the main disturbing influence on the calorifiers of the mines of the Vorkutaugol Combine
- Authors:
- N. M. Tretyakov
- Yu. A. Modestov
The main disturbing influence on mine calorifiers and other heat objects (boilers, boiler rooms, water pipes, etc.) in the systems of automatic temperature control is the value of the increment of the outside air temperature for some constant interval of observation. ...
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Date submitted1974-07-26
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Date accepted1974-09-11
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Date published1975-01-01
Discrete system of automatic control of coal moisture content
- Authors:
- A. F. Avdeeva
Selection and maintenance of optimal technological modes of preparation and briquetting, conditions of coal storage and transportation require prompt and objective autocontrol of its humidity. ...
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Date submitted1974-07-08
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Date accepted1974-09-12
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Date published1975-01-01
About one method of multithreshold pulse regulation
- Authors:
- N. M. Tretyakova
To control inertial objects can be used a method of regulation based on the input of the process derivative, obtained as a pulse repetition rate, into the control action. ...
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Date submitted1974-07-20
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Date accepted1974-09-29
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Date published1975-01-01
Dynamographic platform with electrohydraulic sensors
The traditional approach to the study of sports technique is connected with instrumental methods of registration (kinography, cyclography, stroboscopy) of kinematic characteristics in order to reveal the kinematic structure, i.e. correlation of movements in time and space. ...
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Date submitted1974-07-16
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Date accepted1974-09-19
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Date published1975-01-01
Automatic control of measuring equipment at dynamic control of reinforcement of vertical mine shafts
- Authors:
- E. K. Kersky
The presence of people on a cargo lifting vessel moving at high speed, especially on the skip, is prohibited by safety regulations. ...
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Date submitted1974-07-21
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Date accepted1974-09-05
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Date published1975-01-01
Method of minimizing errors of capacitive autocompensation moisture meter
- Authors:
- E. S. Krichevsky
- R. M. Proskuryakov
Accuracy of measurements of the capacitive moisture-metric system essentially depends on the extent to which it is possible with its help to measure only the reactive component of the total conductivity of the controlled sample. ...
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Date submitted1974-07-25
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Date accepted1974-09-27
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Date published1975-01-01
Mathematical modeling of horizontal converter temperature regime
- Authors:
- V. P. Savva
- O. N. Tikhonov
For mathematical modeling of the dynamics of the temperature regime of a horizontal converter the starting point is the results of research of the converter heat exchange in static modes. ...
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Date submitted1974-07-01
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Date accepted1974-09-29
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Date published1975-01-01
On estimation of averaging facilities operation efficiency
- Authors:
- E. I. Azbel
Ensuring stable characteristics of the qualitative composition of mineral raw materials coming for processing is one of the important directions of technical progress in the mining industry. ...
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Date submitted1974-07-21
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Date accepted1974-09-05
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Date published1975-01-01
Efficiency of phosphorus raw material averaging before enrichment (on the example of Karatau plant)
- Authors:
- A. D. Shkolnikov
- E. I. Azbel
- A. P. Panchishkin
Stabilization of the qualitative composition of processed mineral raw materials, as a rule, significantly increases technical and economic indicators of the main technological processes and facilitates the conditions for the introduction of means of automation and computer technology for their control. ...
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Date submitted1974-07-13
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Date accepted1974-09-26
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Date published1975-01-01
Method of effective coding of information texts based on the optimal expansion of the alphabet
- Authors:
- A. N. Livshits
The task of optimal coding of information texts largely determines the effectiveness of IPS and ACS. ...
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Date submitted1974-07-30
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Date accepted1974-09-27
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Date published1975-01-01
Control of discrete information transmission speed in ACS
- Authors:
- E. F. Lomakin
The impact on the data transmission system (DTS) of various interfering factors is random, so the time of transmission of a message of a certain volume is also a random variable. ...
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Date submitted1974-07-19
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Date accepted1974-09-24
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Date published1975-01-01
Forecasting of the state of data transmission channels in ACS of mining enterprises
- Authors:
- E. F. Lomakin
- M. I. Khanukaev
Current control of the data transmission rate in the conditions of ACS serves for the automated assessment of channels and is carried out on the computer by calculating the probability of successful transmission of the message format under the condition of registration of correctly received blocks on the control section. ...
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Date submitted1974-07-04
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Date accepted1974-09-07
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Date published1975-01-01
Increasing the reliability of discrete information transmission in the ACS
- Authors:
- M. I. Khanukaev
Improvement of management of the national economy on the basis of a wide application of economic and mathematical methods, the use of electronic-computing, organizational equipment and means of collection and transmission of information provides the development and implementation of automated management systems (AMS) industries, organizations and enterprises. ...
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Date submitted1974-07-24
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Date accepted1974-09-26
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Date published1975-01-01
Recognition of geological roof disturbances at systematic control of its deformations
- Authors:
- M. A. Borisova
In conditions of large outcrops of the roof, for example, when developing minerals by a system of chambers (or chambers-lava), information on mining and geological characteristics is of particular importance. ...
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Date submitted1974-07-16
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Date accepted1974-09-16
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Date published1975-01-01
Control of transportation plants on the basis of linear asynchronous motors
- Authors:
- A. F. Boroznets
Linear asynchronous motors (LAM) are successfully used in transportation abroad (in overhead cranes, in induction magnetohydrodynamic converters and suspended monorails, which is of the greatest interest), and use various schemes and control devices for transportation installations. ...
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Date submitted1974-07-07
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Date accepted1974-09-02
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Date published1975-01-01
Estimation of metrological capabilities of the equipment for measuring the manifestations of rock pressure
- Authors:
- E. A. Bukhman
The solution of problems of operational control of parameters of mountain pressure is connected with necessity to receive a large volume of data about a stress-strain state of a mountain massif and fastenings of workings. ...
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Date submitted1974-07-18
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Date accepted1974-09-21
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Date published1975-01-01
Automated control system of the accident liquidation at the mine
- Authors:
- A. I. Geyshes
The effectiveness of operational dispatch control in the implementation of measures of the accident elimination plan (EOP) largely depends on the accuracy, error-free and timely actions of the dispatcher - the responsible head of the accident elimination. ...
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Date submitted1974-07-10
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Date accepted1974-09-07
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Date published1975-01-01
About an effective method of automatic unloading of bulk material from a multi-section hopper in averaging mode
- Authors:
- A. P. Panchishkin
Various methods of unloading ore from multi-section hoppers provide opportunities to stabilize the quality of ore. ...
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Date submitted1974-07-23
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Date accepted1974-09-05
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Date published1975-01-01
About one frequency criterion of stability of nonlinear automatic control systems
- Authors:
- V. B. Smirnova
A closed-loop system of automatic regulation consisting of a linear system with distributed parameters and one non-stationary, nonlinear element is considered. ...
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Date submitted1974-07-27
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Date accepted1974-09-01
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Date published1975-01-01
Classification and coding of technical and economic information in the automated control system of a mining and processing plant
- Authors:
- T. S. Safronova
- V. N. Kovryukov
Without streamlining documentation, unifying forms and optimizing methods of recording and collecting information, it is impossible for automated control systems to function effectively. ...