The paper presents a full-featured simulation debugging system designed to test programmable controllers for automated process control systems in the laboratory. This system imitates the operating conditions of the automated process control system, as close as possible to the real operating conditions at the automation object. The presented system can form various levels of interference of input signals, influencing the automatic process control system with high-intensity network and impulse noise. The system also allows one to vary the parameters of the communication line. The structure of the conducted interference generator and the variator of the communication line parameters have been developed. A description of all elements necessary for modeling the main types of interference is given. In this work, an analysis of the existing electromagnetic interference in the signal circuits of process control systems was carried out, and the most typical interference was identifed. A block diagram of a conducted interference generator and a variator of communication line parameters has been developed. Both functional blocks are part of the modeling and debugging complex. They allow one to simulate the interference environment for the controller under test by introducing the generated interference into the signal communication lines in a conductive way. The structure of the adapter-former of interference for analog signals is worked out in detail with a description of its main components. Recommendations for choosing the element base are given. The practical signifcance of the performed work lies in the fact that it may improve the efciency of the complex of control and laboratory tests of the systems being created. This allows one to achieve a reduction in complexity and in setup time during implementation at the automation facility
Recycling of organic wastes is an extremely important and challenging environmental task. One of the promising trends in this field is the creation of multi-mode (combustion, pyrolysis and gasification) plants for processing organic wastes with production of such useful products as thermal energy and energy carriers (biocoal, bio-oil, pyrolysis resins, synthesis gas, etc.) and fertilizers. When creating such plants, the main problems include instability of the properties of a source material, its high water and ash content. This drives the developers to use non-standard equipment and atypical control algorithms, the creating of which requires a lot of experimental work to be done. At the same time, conducting field experiments is an expensive, difficult and long process that highlights the need for extensive use of mathematical and computer modeling. In this paper, mathematical models of elements of the gas-air path of the organic waste processing plant are obtained. The characteristics of the gas-air path of the plant as of an object of regulation for pressure in the lower and vacuum in the upper part of the combustion chamber are determined. The gas-air flow consists of the flue and the air ducts and serves to remove flue gases from the combustion chamber and supply air needed to maintain fuel combustion. When developing new automation systems, modeling allows assessing the applied solutions accurately, simplifying and reducing the cost of their development, solving the problems of system stability, optimizing transient processes, etc. The nonlinearity of the obtained mathematical models on the "the pressure at the inlet to the n-th section air-gas flow path — the pressure at the outlet of the n-th section of the air-gas flow path" channels, the nonstationarity of objects of control and dependence of their dynamic characteristics on operating mode of the plant are determined. Due to developed models, the two-way relationship of the gas and air paths has been revealed. When modeling, the gas-air flow of the plant is divided into several sections for which the mathematical models are obtained. They are required to synthesize controllers of flue gases vacuum in the upper part and the air pressure in the lower part of the combustion chamber.
В работе представлен программно-аппаратный комплекс, в основе которого лежит блок информационно-управляющий, разработанный специалистами ИВТ СО РАН, предназначенный для создания распределенных систем автоматизации сбора данных и управления различными экспериментальными установками. Описана структура блока информационно-управляющего, приведена структурная схема распределенной системы автоматизации на его основе и ее практическое исполнение и апробация при создании конкретной установки - автоматизированного экспериментального образца многофункционального энергетического комплекса, созданного в ООО «БиоИстЭн». Разработанная аппаратура и программное обеспечение могут послужить основой для создания надежных и простых в эксплуатации систем автоматизации современного уровня для любых физических установок как научного, так и промышленного назначения. Abstract – The paper presents a hardware and software complex, which is based on the measuring and control unit, developed by the specialists of the ICT SB RAS, designed to create distributed automation systems for data collection and management of various experimental facilities. The structure of the measuring and control unit is described, a block diagram of a distributed automation system based on it and its practical implementation is given, and approbation during the creation of a specific installation - an automated experimental sample of a multifunctional energy complex created by BioIstEn LLC – is presented. The developed equipment and software can serve as the basis for the creation of reliable and easy-to-use automation systems of the modern level for any physical installations for both scientific and industrial purposes.
The paper presents a software package for modeling the dynamic processes of the working gas passing through an arbitrary set of tanks connected by an arbitrary set of pipelines Calculations were carried out for various combinations of tank joints, including modeling complex aerodynamic installations of ITAM SB RAS.
The paper describes a method for verifying control algorithms of the APCS (automated process control system) applied software using a simulation complex that provides correctness control: execution of control commands, equipment state identification, control signals generation, etc.
This paper describes the synthesis of an adaptive automatic control system for the vortex dryer of a plant for recycling organic wastes. The application of an adaptive controller for loading the dryer with wet fuel is presented.
В работе представлен набор аппаратно-программных средств, разработанный специалистами ИВТ СО РАН и ИТПМ СО РАН, предназначенный для автоматизации сбора данных и управления высокоскоростным аэродинамическим экспериментом на аэродинамической трубе адиабатического сжатия ИТПМ СО РАН, а также создания АСУ технологическими и научными установками. The paper presents a set of hardware and software developed by specialists of ICT SB RAS and ITAM SB RAS, designed to automate data acquisition and control of a high- aerodynamic experiment on the adiabatic compression wind of ITAM SB RAS, as well as the creation of ACS technological and scientific installations.
ПРИМЕНЕНИЕ МОДЕЛЬНО-ОРИЕНТИРОВАННОГО ПРОЕКТИРОВАНИЯ К СОЗДАНИЮ АСУ
Experimental modeling of processes and phenomena in wind tunnels is one of the main research field in modem super- and hypersonic aerodynamics. Effective experiments are impossible to implement without developing new aerodynamic installations and overhauling existing ones by equipping them with modern automation systems designed for scientific research. The authors' task was to provide a researcher with convenient and flexible tool for automating high-speed experimental scientific research in AT-303 (AT-304) and Transit-M hypersonic wind tunnels, which would allow configuring hardware and software to meet the requirements of a particular experiment.
As a component of multi-functional safety control, the man–machine mine shaft alarm system ensures safe conveyance of personnel and cargo in mines. The designed interfaces, circuits and architectures, hot backup and the objective-coordinated communication protocols guarantee strict orderliness, reliability and safety of mine control.
The method to test application software of a process control system for belt conveyor on the base of the modified approach "hardware-in-the-loop" is proposed. The description and example of using of specialized software-hardware complex for testing of application software of process control systems is given.
In this paper, we propose a variant of constructing automation systems for aerodynamic experiments on the basis of modern hardware-software means of domestic development. The structure of the universal control and data collection system for performing experiments in wind tunnels of continuous, periodic or short-term action is proposed. The proposed hardware and software development tools for ICT SB RAS and ITAM SB RAS, as well as subsystems based on them, can be widely applied to any scientific and experimental installations, as well as to the automation of technological processes in production.
This paper describes a visual interactive simulation system specialized in simulation of technological processes in mining. A new model of the crushing-grading mill was developed with the help of this simulation system. The model was integrated with an actual process control system of the crushing-grading mill into a software/hardware test bed. The process control system of the crushing-grading mill was debugged and test with the help of this model.