scholarly journals МОДЕЛЮВАННЯ ХІМІКО-ТЕХНОЛОГІЧНИХ ПРОЦЕСІВ У SCADA ЗА ДОПОМОГОЮ ТЕХНОЛОГІЇ OPEN PLATFORM COMMUNICATIONS

2020 ◽  
pp. 59-66
Author(s):  
Ігор Леонідович Левчук ◽  
Олег Петрович Мисов ◽  
Ксенія Олексіївна Фесенко ◽  
Антон Романович Шейкус
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Mathematical Models ◽  
Information Exchange ◽  
Raw Materials ◽  
Synthesis Process ◽  
Technological Processes ◽  
Open Platform ◽  
Model Control ◽  
Opc Technology

The subject of study in the article are methods for integrating mathematical models of chemical-technological processes implemented in universal modeling programs into modern SCADA systems for developing and improving methods for controlling these processes. The goal is to develop a control system for the synthesis of acetylene in a kinetic reactor, based on a computer model created in universal modeling programs and integrated into SCADA using open platform communications (OPC) technology. Tasks: to create a mathematical model of the process of synthesis of acetylene based on the selected universal modeling program; to develop a way to integrate the resulting model into modern SCADA using OPC technology; to develop in SCADA a control system for the process of synthesis of acetylene according to a mathematical model as part of a functional human-machine interface and control subsystem algorithms; get transient graphs and prove the efficiency of the control system. Conduct a process study using a mathematical model. The methods used are computer simulation of technological processes; OPC technology; SCADA based management. The following results are obtained. A control system for the acetylene synthesis process based on SCADA Trace-Mode and a mathematical model implemented in the ChemCAD package has been developed, while the model - control system information exchange is implemented based on OPC technology. Checked and proved the efficiency of the resulting control system. A mathematical study of the process was carried out, an experimental dependence of the yield of the final product, acetylene, on the temperature, and consumption of raw materials at the inlet of the reactor was established. Conclusions. The novelty of the results is as follows. A new method is proposed for integrating mathematical models implemented in the ChemCAD modeling package into modern SCADA, based on OPC technology. A study of the process of acetylene synthesis by a mathematical model was carried out, experimental dependences of the acetylene yield on temperature and ethylene consumption at the inlet of the synthesis reactor were obtained. An analysis of the obtained experimental dependences showed the need to use cascade control algorithms to increase the efficiency of controlling the process of acetylene synthesis in a kinetic reactor.

scholarly journals Modeling of acetylene synthesis process in ChemCAD and features of SCADA connection using OPC technology

2020 ◽  
Vol 8 (2) ◽  
pp. 34-40
Author(s):  
І. Levchuk ◽  
◽  
O. Mysov ◽  
К. Fesenko ◽  
◽  
...  
Keyword(s):  
Mathematical Model ◽  
Control Systems ◽  
Transient Process ◽  
Information Exchange ◽  
Simulation Software ◽  
Synthesis Process ◽  
Graphical Dependence ◽  
Scada System ◽  
Scada Systems ◽  
Opc Technology

The article examines the features of constructing mathematical models in modern universal modeling programs and their further use using OPC technology in control systems for processes of chemical technology based on SCADA systems. The objective is to study the features of information exchange using OPC technology between the universal ChemCAD simulator and the modern SCADA system TRACE-MODE 6 using the example of a mathematical model of a kinetic reactor for the synthesis of acetylene. To achieve this goal, a mathematical model of a kinetic reactor for the synthesis of acetylene based on a model of a continuous stirring reactor has been developed in the ChemCAD simulation software environment. The reactor was tuned and the parameters of material flows were experimentally selected. A study of the process of synthesis of acetylene was carried out according to a mathematical model, a graphical dependence of the yield of acetylene on temperature was obtained and its analysis was carried out, according to the results of which the temperature providing the maximum yield of acetylene was established. With the help of OPC technology, information exchange between the model and the control system of the acetylene synthesis process is carried out, which is based on the modern SCADA system TRACE-MODE 6. A graphical dependence is obtained describing the transient process of the system through the acetylene output channel when using a PID controller and perturbing with a change in the task. The analysis of the transient process revealed the absence of transport lag, which is explained by the calculated nature of the control object and is impossible for a real technological process. To solve the problem, an experiment was carried out, according to the results of which a method for emulating transport lag using the functionality of the information channels of the SCADA system was proposed. The graph of the transient process of the system through the acetylene outlet channel was obtained, which confirms the effectiveness of the proposed method of emulation of transport delay when using external calculation models in SCADA systems. Keywords: mathematical modeling, universal modeling programs, OPC, control systems, SCADA-based control, TRACE-MODE, ChemCAD.

Classification of mathematical models of technological design

2021 ◽  
pp. 68-71
Author(s):  
Keyword(s):  
Mathematical Model ◽  
Mathematical Models ◽  
Technological Process ◽  
Process Design ◽  
Geometric Parameters ◽  
Technological Design ◽  
Technological Processes ◽  
Technological Preparation

The use of mathematical models is of great importance for the automation of the design of technological processes. Representation of the geometric parameters of the part in the form of mathematical models allows automating the development of the structure and calculation of the parameters of the technological process, which is important for the complete digitalization of the technological preparation of production. Keywords: technological process, design, mathematical model, digitalization. [email protected]

scholarly journals Mathematical Model of Hybrid and Electric Cars Control System

2021 ◽  
Vol 320 ◽  
pp. 01014
Author(s):  
Vladimir Kozlovsky
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Mathematical Models ◽  
High Voltage ◽  
Test Bench ◽  
Hybrid Vehicles ◽  
Storage Battery ◽  
Battery Cell ◽  
Electric Cars ◽  
High Voltage Battery

The paper presents development results of the complex of simulation mathematical models of real-time and algorithms for a semi-natural test bench of the control system of a high-voltage storage battery of hybrid vehicles. They are designed to control the physical model of the test bench, simulating the characteristics of the cells of the high-voltage storage battery and other components that make up the high-voltage storage battery. This study aims to implement a complex of mathematical models and software with the required accuracy of parameters and signals that simulate the behavior of a real high-voltage battery. That intended for the development and testing of mathematical algorithms and software for the control system of a high-voltage battery of a hybrid vehicle. The main features of the developed models are an imitation of the characteristics of the cells of a high-voltage storage battery with the ability to set the initial state-of-charge (SOC) and change the charge during the operation of the model. The data were used to develop and evaluate a mathematical model of a high-voltage storage battery cell. The operating result contributes to the acceleration of the software development process for electrical complexes and control systems for high-voltage batteries for hybrid vehicles.

scholarly journals SMALL-SIZED UNIAXIAL TWO-WHEEL ROBOT FOR EDUCATIONAL LABORATORY

2019 ◽  
Vol 16 (32) ◽  
pp. 147-167
Author(s):  
K. S LELKOV ◽  
E. D KURIS ◽  
Y. V STOLYAROV ◽  
I. A NIKITENKO ◽  
S. V KRAPIVIN
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Physical Nature ◽  
Educational Process ◽  
Control Algorithms ◽  
Measuring Systems ◽  
Supplementary Education ◽  
Data Merging ◽  
Model Control ◽  
Scale Modelling

This article is dedicated to the development of the uniaxial two-wheel robot (UTR) constructed as the upper pendulum. This robot is intended to be used as a simple and inexpensive model for robotic engineering laboratory classes. Such robot can be used for educational purposes in higher education institutions, as well as in robotic engineering courses in schools and supplementary education institutions. Experimental UTR unit and its general specifications have been developed. The article describes the synthesis of UTR’s simplified mathematical model, control system and hardware composition. It is proven that the simplified equations are correct. In addition, it presents the algorithms of driving engines torque formation based on measurements of sensors with various physical nature and different filtration methods. Possible data merging variants’ diagram is presented. In the process of the half-full scale modelling, the researching of robot movements was conducted simultaneously with the recording of primary information from all measuring systems. As a defined motion, the stabilisation concerning the horizon from the position when the rotation angle of a platform was 40 degrees has been chosen. It has been determining that the robot's engines can enhance torque ranging from 0.05 to 0.22 Nm. The combination of the described mathematical model, control algorithms and specific features of certain structural components ensure the efficiency of UTR application in the educational process. Several UTR control system variants are described, and the simulation results are presented. The article also includes the results of hardware simulation.

Design of Rotary-Type Flow Control Valve for Control of Water-Driven Spindle

2010 ◽  
Author(s):  
Yohichi Nakao ◽  
Hajime Niimiya ◽  
Takuya Obayashi
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Flow Control ◽  
Mathematical Models ◽  
Rotational Speed ◽  
Control Valve ◽  
Diamond Turning ◽  
Flow Control Valve ◽  
Type Flow ◽  
Rotary Type

Water-driven spindle was developed for producing small and precise parts by the diamond turning processes. Rotational speed of the spindle can be controlled by the flowrate supplied to the spindle. The paper describes a newly developed rotary-type flow control valve that is designed for controlling rotational speed of the water-driven spindle. In particular, the paper focuses on the establishment of the mathematical model capable of representing the characteristics of the open loop control system composed of the pump, flow control valve and spindle. Mathematical models are then derived so that a feedback control system can be designed using the models. Performances of the flow control valve and the spindle are examined through simulation as well as experiments. It is then verified that the derived mathematical models are capable of representing the performance of the system. In addition, the required positioning accuracy of valve rotation for achieving desired control of the rotational speed of the spindle is considered based on the derived linearized mathematical model.

scholarly journals MATHEMATICAL MODELLING OF THE TECHNOLOGY OF PROCESSING THE SEED MASS OF VEGETABLES AND MELONS

2019 ◽  
Vol 13 (3) ◽  
Author(s):  
V. Shebanin ◽  
I. Atamanyuk ◽  
O. Gorbenko ◽  
Y. Kondratenko ◽  
N. Dotsenko
Keyword(s):  
Mathematical Model ◽  
Mathematical Models ◽  
Random Sequence ◽  
Experimental Studies ◽  
Seed Mass ◽  
High Accuracy ◽  
Suggested Method ◽  
Technological Processes ◽  
Seed Processing ◽  
The Mathematical Model

Designing modern seed processing machines requires a study of the regularities of technological processes, dynamics and conditions of operation. To determine the control parameters and their optimum values, it is necessary to use high-precision mathematical models of technologies of processing the vegetable and melon seed mass. A method has been suggested of modelling the technology of processing the seed mass of vegetables and melons based on nonlinear canonical decomposition of a random sequence of changes in the technological process parameters. The method of modelling the technology of processing the seed mass of vegetables and melons can be used to determine the optimum values of design and operation parameters of seed separating machines. This method allows obtaining mathematical models of technological processes for an arbitrary number of input parameters used to evaluate the characteristics of seeds, the degree of nonlinearity, and the peculiarities of stochastic connections. The method consists of the following stages: collection of statistical data; calculation parameters in the mathematical model; evaluation of the values of the parameters; calculation of the input parameters. The mathematical model of the processing technology of the seed mass of vegetables and melons does not impose any restrictions on the properties of the random sequence of input and output parameters (linearity, stationarity, monotonicity, scalarity, etc.). It allows taking into account the features of seed processing and, as a result, achieving the maximum quality of separation of vegetable and melon seeds. The method has been approved on the basis of the experimental installation of a separating machine. The results of the experimental studies have confirmed the high accuracy of the suggested method. The application of the suggested models reduces the average error of determination of seed losses. Statistic data for calculating mathematical model parameters have been obtained in the course of processing melons and cucumbers on an experimental installation. The results of the experimental studies have confirmed the high accuracy of the suggested method.

scholarly journals Robotic System for Maintenance of Feed Table for Livestock Complexes

2020 ◽  
Vol 14 (3) ◽  
pp. 33-38
Author(s):  
D. Yu. Pavkin ◽  
E. A. Nikitin ◽  
V. A. Zobov
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Dry Matter ◽  
Research Process ◽  
Feed Additives ◽  
Robotic Platform ◽  
Feed Mixture ◽  
Matlab Simulink ◽  
Technological Processes ◽  
Multi Stage

Assessing the robotization level of technological processes in livestock complexes based on the breeding, authors found that the most free niche of robotization of technological processes in livestock complexes is the feeding process, which forms 55 percent of milk productivity. There is a need to develop a wheeled robotic platform that will ensure the availability of the feed mixture along the feeding front. This platform will multi-stage saturate the bulky components of the feed mixture with concentrated ones, increasing their attractiveness to animals, while normalizing the balance of dry matter consumed and fiber obtained from bulky feeds.(Research purpose) To simulate the control system of a robotic platform with an independent electro- motorized drive.(Materials and methods) The article presents technologies for organizing animal feeding processes on the farm, conducted a technological assessment of the effectiveness of automated and robotic machines used on the farm. Authors used the Matlab/Simulink simulation environment in the research process.(Results and discussion) The article presents a developed mathematical model describing the kinematics and dynamics of the platform movement. Authors formed the assumed element base into a general model of the robot in an artificial Matlab/Simulink environment, simulating the process of moving around a circle.(Conclusions) The created mathematical model forms the basis for creating a control system for the robot under development. The device for dosing feed additives will ensure the balance of dry matter and fiber consumed.

scholarly journals MATHEMATICAL MODEL DEVELOPMENT AND CORRECTIONS IN THEOPERATION OF CNC EQUIPMENT INPUT

2017 ◽  
pp. 128-134
Author(s):  
R. Yu. Nekrasov ◽  
U. S. Putilova ◽  
A. I. Starikov ◽  
I. V. Soloviev ◽  
Yu. A. Tempel
Keyword(s):  
Mathematical Model ◽  
Mathematical Models ◽  
Model Development ◽  
Trajectory Control ◽  
Cnc Machines ◽  
Technological Processes ◽  
Accuracy Problem

The accuracy problem of engineering products on the CNC machines processing increase. The authors propose a solution to this problem by providing input of the operational adjustments of trajectory control of the machine executive bodies. The necessity of creation of mathematical models of technological processes diagnostics of the system machine - fixture - tool - workpiece.

Construction of mathematical models of technological processes based on theory of sets

2021 ◽  
pp. 48-50
Author(s):  
S.Yu. Kalyakulin ◽  
E.V. Mitin ◽  
Sul'din S.P.
Keyword(s):  
Mathematical Model ◽  
Mathematical Models ◽  
Technological Process ◽  
Technological Processes

An approach to the construction of mathematical models of technological processes based on theory of sets is considered. Keywords: structure, isomorphism, mathematical model, technological process, connections, technology. [email protected]

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