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Power system restoration takes place where power systems experience a blackout and might be splitted into several islands with limited number of black start units. The main challenge of the restoration process is to keep both frequency and voltage within allowable limits while restoring the network through energizing lines and transformers as well as load pickup. The load pickup scheme is determined...
In the paper several approaches to building the real-time basic principle simulators of nuclear reactor processes are presented and their characteristics are analyzed. The characteristics of developed simulators for MATLAB/Simulink including their limitations, and the idea of a cross-platform simulator independent of specific hardware or software are presented. Mathematical models of selected nuclear...
In this paper an approach to obtain a control strategy for optimal N-removal in alternatingly aerated, continuously mixed, continuously fed activated sludge processes (ASP's) using adaptive Receding Horizon Optimal Control (RHOC) is presented. This control strategy is successfully tested both in simulation and pilot plant experiments. The RHOC approach offers an excellent opportunity to link the higher...
This paper presents real-time application fuzzy control concept of a typical industrial plant whose performance is severally affected by disturbances and in particullar by changes in the operating point. This is typically the case for large coal fired power plants which can be treated as multivariable dynamic system. A short description of the power plant is given. For this power plant, a reduced...
In an aluminium strip processing line, the main concern is to control independently velocity and tension. This paper deals with two control systems applied to a basic unwinder-rewinder system: the first one is based on classic PI controllers including specific compensations. The second is a LQG control. Simulations demonstrate the effectiveness of both solutions.
State observation of distributed parameter systems pose the problem of coping with the infinite state dimension of the process models. In addition to this difficulty, the dynamics of Simulated Moving Bed (SMB) processes is described by partial differential equations which are governed by switching initial conditions or switching boundary conditions, respectively. Furthermore, due to the setup of SMB...
A mixed-potential model is proposed for the electroless nickel-plating process. It is tested against measured data and used for monitoring of the thickness and phosphorous content of plating film. The bath-loading process with strong effect on chemical reactions is evaluated as Markov pure jump process and applied in control. The thickness and phosphorous content are stabilized at desired levels using...
In this paper a microcontroller based digital control of an industrial application is presented. The positioning control of a ventilator piston in an artificial respiration device will be described. This new device will replace the old ventilator system which uses an analogous controller by a more modern one controlled by a microcontroller. In addition to hardware savings it is possible to get more...
As automation level of a processing plant is increased, careful consideration should be given to the development potential that novel devices offer to operate the plant closer to its optimal operating point. New advanced controls may be developed with the aid of computer based systems and modern measurements. These facilities also make possible the implementation of more advanced control and optimisation...
This paper deals with temperature control of the Copper Isasmelt plant at Mount Isa Mine. Improved temperature control is associated with substantial monetary returns primarily due to the extension of refractory brick life through the reduction of excessive temperatures. An advanced control project was undertaken with the objective of improving control performance and reducing operator intervention...
Detailed first-principle models of grinding processes, while very satisfactory for simulation purposes, are not well suited for the development of control schemes due to their high level of complexity. In this study, a low-order model describing the time evolution of the particle distribution in a few size intervals is proposed. Using a maximum-likelihood approach, the model is identified and its...
A recently proposed method for the simplification of single variable systems having ordinary polynomial denominators has been extended to the multivariable case encompassing situations where the original or simplified model may have delays in their states. The performance index used for optimization is the integral of the time-weighted squared error between the responses of the original and simplified...
Civilian or military operational centers are typical for their specific set of activities according to solved problems. Operational personnel have to perform procedural as well as positive kind of control of its controlled entities. To help these personnel with their decisions, we propose to build an automated system based on knowledge structure. This paper deals with procedural reasoning multi agent...
The research will focus on studying the feasibility of defining/ formalising model driven project management using PMBOK as base. This work proposes a model driven project management based upon all the Process and Knowledge management areas making use of modelling languages like UML and OCL. This is a unique attempt to define and describe the complete PM standard taking into consideration all the...
The paper is to study new control strategies for improvement of dynamic responses of a supercritical power generation process through an improved control to the associated fuel preparation performed by the coal milling process. Any control actions taking for the milling process will take a long time to show their influences onto the boiler, turbine and generator responses as the whole process experiences...
The concept of networked feedforward-feedback control system is proposed based on practical industrial process control. Its configurations as well as the development of its uniform model are investigated in detail. Feedforward-feedback control system, wherein the control loops are closed via real-time networks, is called networked feedforward-feedback control system(NFCS for short). Three different...
The use of Light Emitting Diode (LED) as the lighting device becomes popular due to its energy-efficient characteristic. However, LED has radiation angle that is relatively smaller than other types of lighting device. This results in heterogeneity of light intensity that received by particular point near the LED. To obtain homogeneity of light intensity, this paper proposes a model of fuzzy logic...
The purpose of this paper is to develop a nonlinear and multivariable model, using the step response in a industry didactic plant, which is used in the course of industrial process control at IFES - SERRA (ES). From the physical equations are determine the stationary behavior of the plant in any operation point. By using the step response, the dynamic characteristics of the plant is approximated by...
By using the method of logical analysis and case study, this essay has discussed the application of mathematical modeling in coaching process control. The conclusion is that the whole implementation process of model training method is based on the index system of training modeling, and use evaluation index system as examination appliance. The development and change of the coaching process are under...
This paper presents a few examples of the possibility of effective use of open-source simulation tools within the project gsim to solve the problems of the electronics in educational and professional practice. The fundamental difference with regard to commercial products are open file and data formats, the possibility of creating own components and macro models. An essential advantage is the easy...
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