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The article discusses the reliability of the human operator in the Man - Machine - System (MMS). Safety and reliability of technical systems can be critically influenced by people's behavior. It is necessary to analyze the technical components of the system and at the same analyzing human activities.
The paper deals with mathematical analysis of bearingless electric motor with surface-mounted permanent magnets. The motor are connected active magnetic bearing and electric motor in one construction. New construction eliminate disadvantages of conventional motor, e.g. overall efficiency, friction forces, heat emission. The magnetic levitation will improve static and dynamic parameters, servicing...
The contribution is devoted to graphic web presentation of selected thermochemical properties, e.g. molar heat capacity courses, using service oriented architecture (SOA) and web service for thermodynamic calculation support. In the introduction paper specifies graphic support (GD library). Solution of application is based on taking advantage of graphic support JpGraph and mentioned web service. There...
Neural networks as universal approximators possess capability to model complex nonlinear phenomena. However, when almost nothing is known about the modeled dynamic process it is difficult to determine important parameters like the number of neurons or the size of regressor vector (dynamic order). In order to avoid suboptimal settings for a dynamic model using trial-and-error method, genetic algorithm...
Frequent pattern mining is the field with many practical applications, where large computational power and speed are needed. Many solutions, both software and hardware, are proposed for those applications, but specialised solutions in form of embedded systems are not so common as one could imagine. This is especially true when we consider problems that can be paralleled. Many of the state-of-the-art...
This paper presents some experiences from the procedure of application of the heat processes simulation models. The main focus is on the steam production and superheating area with their control circuits in the power plant. The model was developed for the support of the full process from the initial design plans phase to the development of new control algorithms. The paper shows the main results achieved...
The paper shows an influence of a choice of autonomous testing structure on fault coverage in synchronous digital sequential circuit testing. In order to increase testability of sequential circuit during testing, its memory module usually undergoes a disconnection. At the time the testing structure gains access to no-primary output of the testing circuit. The circuit undergoes transformation into...
The paper deals with an automatic tuning of input shaping filter added to the classic cascade control of the two-mass flexible system driven by an electric servomotor. The considered input shaping filter has a structure of weighted sum of four time delays. The tuning algorithm contains two steps. The first step of this method is to roughly estimate the damped frequency of the system. In the second...
The paper deals with Smart Grids. After slight introduction, the Home Area Network is described. The paper focuses on the device called Home Coordinator. The Home Coordinator controls all home appliances in the home with respect to reach their maximum efficiency and cost saving. A basic approach and algorithm to schedule home appliances is presented.
At technological processes in metallurgy and machine-industries plants is heating of the metals one of the most important operation have influence on production in term of efficiency, quality and costs. In term of quality steel coil annealing is necessary to known temperature inside the object. It is the place with a lowest temperature during annealing process. This paper deals about proposal of the...
This paper presents configuration principles of the PLC and internet router for requirements of remote monitoring and control of the technological process. For one router can be connected not only classical modular PLC but also PLC Power Panel with a process visualization and same operator PC. Communication of the PLC with a operator PC can be provided also by wireless data transmission so-called...
Control of central heating supply chain is very complex and requires evaluation of a lot of data. Not only the operational and the technical parameters, but also the financial, logistical or investment indicators are monitored. The number of these data can be substantial and their evaluation rather complex. By converting these data into the scene in virtual reality, the situation may become clearer...
Mining production in underground spaces will be in the near future realized by autonomous systems without human presence. As the production is connected to natural raw materials deposits, where the process environment models and activities cannot be fully determined, the human supervision will be still necessary. Classical process control, with the external system description of the dynamic behavior,...
Realizing the practical use of virtual reality possibilities in operative management does not exist today. This paper deals with new approaches in development and its uses in the operational management of the mining process. The proposed system will be universal with the option set for the various fields of industrial process. Design verification shall be carried out at specific coal cleaning plants.
In this paper, we define a Fractional Sturm-Liouville Operator (FSLO), introduce a regular Fractional Sturm-Liouville Problem (FSLP), and investigate the properties of the eigenfunctions and the eigenvalues of the operator. We demonstrate that these properties are similar and in some cases identical to those for Integer Sturm-Liouville Operator. We briefly introduce a Reflected Fractional Sturm-Liouville...
The paper presents one design method for stabilization of switched single input and single output systems using linear state feedback control law. The exponential stabilization is achieving by suitable common left eigenvector assigning to every constituent under assumption that each subsystem is controllable. The design is based on the necessary stability condition and is presented in terms of the...
The speed of information technology development is ever increasing. The appropriate information can be easily provided for and often it can be visually presented. The access to relative information, documents, etc., takes advantage of Hyperlinks, often supported by the Internet of things.
Hilbert-Huang Transform (HHT), proposed by N. E. Huang in 1998, is a novel algorithm for nonlinear and non-stationary signal processing. The key part of this method is decomposition the signal into finite number of Intrinsic Mode Functions (IMF) which will meet the requirements of Hilbert Transform. In this part, the algorithm uses natural cubic spline to connect all local maxima and local minima...
Forecasting the future time series values from the past values plays important role in daily life. There are some techniques support for time series analysis such as statistics, Neural Network (NN), Fuzzy Logic (FL) and fusion NN and FL. However, there is lack of easy, free and visual tools for users to analysis time series data. In this paper we try to use Java program language to implement of Fuzzy...
Economic benefit of an industrial company depends on forethought deployment of an industrial production system. Production processes are being optimized using variety of models in order to maximize revenue of the company. Application of robotic systems on the production sites increases effectiveness of the industrial company providing variety of automation approaches. Configuration of robotic system...
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