#7 2014

CONTENTS №7

Discussing a Topic…

Process simulation techniques in present-day automation systems

Introduction

Sidorov A.V., Tretyakov V.V., Baranov D.N.  Application of simulation techniques in the development of supervision programs for complex industrial plants

The availability of complex technical systems is controlled with the help of special instrumentation per monitoring programs. To ensure the desirable quality of such programs, the paper proposes to use an integrated development environment. A simulation subsystem included in this environment allows to detect errors and validate the diagnostic capabilities of control programs by simulating technical system’s failures.

Keywords: technical diagnosis, instrumentation, control program, debugging, diagnostic properties, simulation system, versatile aggregate model.

Malafeev S.I., Tikhonov Yu.V.  Automation of the diagnosis of mining machines’ electrical equipment based on operation procedure simulation

Application results of operation procedure simulation for condition diagnosis of mining machines’ electrical equipment are discussed. The paper describes the algorithms and outlines their application in information-diagnostic systems developed in United Energy Company LLC.

Keywords: automation, simulation, electrical equipment, resource, computer, diagnosis, control system.

Karavaykov V.M., Volkov I.O.  The development of a mathematical model of thermal processes for evaluating temperature controller parameters

A procedure for developing a mathematical model of thermal processes in a greenhouse with water heating is offered for preliminary evaluation of temperature controller parameters with the objective to control air temperature by manipulating heat carrier temperature.

Keywords: mathematical model, transient response, controller parameters.

Borovikov Yu.S., Gusev A.S., Sulaymanov A.O., Andreev M.V.  Full-range real-time overvoltage simulation in power systems

The paper presents the developed tools for full-range real-time simulation of power systems enabling valid and identifiable adequate simulation of the continuous spectrum of significant quasisteady and transient processes in power systems and their equipment pieces including overvoltage processes. Case studies of switching overvoltage in a real-life power grid are included.

Keywords: power systems, full-range simulation, real time, quasisteady and transient processes, verification, identification, validity, switching overvoltages.

Denisova L.A.  Design and simulation of an adaptive system with predictive model and variable structure

The paper examines an adaptive system with a predictive model synthesized in the form of an optimal predictor of the control system’s generalized output signal. It suggests to ensure the operation stability by including the a stability analysis block into the adaptation mechanism. Such approach enables system structure update in case of closed loop instability and estimated nonminimum-phase behavior of the control plant. Numerical results based on MATLAB / Simulink simulation are included.

Keywords: adaptive control system, identification, predictive model, stability, nonminimum-phase behavior, variable structure.

Goncharov A.A., Digo G.B., Digo N.B., Torgashov A.Yu.  Parametric identification of dynamic soft sensor models for process plants

Identification of dynamic inferential (soft sensor) models based on first-order Volterra kernels is discussed. Ridge and robust regressions are used for model parameter estimation. Higher efficiency of dynamic soft sensor models against conventional (static) soft sensors is demonstrated based on trial operation results.

Keywords: Volterra kernels, parametric identification, dynamic soft sensor.

Verevkin A.P., Kalashnik D.V.  Improving the industrial safety level on the basis of predictive models with the example of ethylene polymerization in a tubular reactor

Higher processes control efficiency and safety is related with the development of advanced process control systems. The paper discusses industrial safety improvement based on: (a) predictive models for process variable and quality indicator changes and (b) the integration of quality control and safety systems.

Keywords: advanced control, models, prediction, safety systems.

Antipov O.D., Pershin O.Yu., Popad’ko V.E., Khalitova A.N., Yuzhanin V.V.  Educational process simulation and control system – Application experience

The paper overviews the projects implemented on the basis of process control and simulation suite imple3mented in the I.M. Gubkin State Oil and Gas University of Russia. These include advanced debutanizer control and crude distillation control and simulation.

Keywords:process simulation, advanced control, PID algorithm, debutanization, crude distillation.

Borshchev A.V.  How to build simple, nice and useful models of complex systems

The paper briefly overviews the existing languages for system dynamics and model architecture description with an objective to demonstrate to a model developer the available toolkits and make him/her think wider and maybe reject a traditional approach, language or tool in favor of another one delivering a more solution to a specific task.

Keywords: simulation, agent-based modeling, graphical description, level of abstraction, multimethod model architectures.

Aksenov K.A., Antonova A.S., Spitsyna I.A., Sysoletin E.G., Aksenova O.P.  The development of a computerized analysis, simulation, and decision-making system for metallurgical works on the basis of the multi-agent approach

A computerized analysis, simulation, and decision-making system for metallurgical works is described. The operation of information systems at different automation levels requires system integration for timely and justified decision-making. The solutions are aimed at the implementation of a standard business process of improving technological, logistic, and organizational processes of an enterprise. The paper describes the integration of plant improvement and production processes at metallurgical works using multi-agent approach in the development of automated system modules. Multi-agent approach application enables the automation of decision making and agreement process due to the communication of hybrid agents implementing the functionality of individual system modules.

Keywords: automation, metallurgical works, business process, multi-agent system, hybrid agent, operations improvement.

Devyatkov V.V.  Cloud simulation using GPSS World

The paper describes a cloud-type simulation system based on advanced simulation modeling technique and a conceptual model of simulation research automation system. Various research organization architectures using special services are presented. Available system services such as simulation kernel, data and results storage, server and client software are described as well as analytical services under development.

Keywords: simulation, cloud technologies, Internet, Web services, mobile platforms.

Varnavsky A.N.  Simulation of dependence of the quality of man-machine systems from parameters of operator’s organization labour activity

The paper describes a simulation model of worker’s labor capacity subject to fatigue and recovery processes. A set of curves is obtained describing the relationship between labor capacityand the number of short-term breaks under various values of initial labor capacity, fatigue and recovery intensity. An automated system for galvanic skin response pick-off and analysis is described. The system can evaluate the level of human individual’s activity and labor capacity and therefore be used for determining the optimal time for rest and recovery.

Keywords: worker, labor capacity, working ability, fatigue, simulation model, GPSS World.

Ivanov A.I.  Situational perception: a novel approach to HMI design

The development of industrial automation systems and tools entails the increasing information loading of operators controlling the present-day automation complexes. An approach to HMI design based on situational perception investigation is offered.

Keywords: situational perception, human-machine interface, workstation, screen hierarchy, information presentation.

SIMATIC PCS7 – Advanced control functiuons

The paper briefly lists the capabilities of advanced control functional blocks of PCS7 Simatic DCS which are available for end users.

Keywords: advanced control, modeling, optimization, regulatory control, distributed control system, process.