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How to use an old turbo-compressor (turboshaft) engine and transfer it into a laboratory system used for design and development of progressive control, diagnostic and modeling algorithms transforming it into an intelligent turbo-compressor engine? The intelligent turbo-compressor engine currently designated as iSTC-21v is a small turbojet engine with a single sided radial compressor, bound combustion...
This paper provides a description of a hybrid method for automated evaluation of qualitative parameters. The method is presented on an example of efficiency evaluation by planning experiments with specified set of key performance indicators in case of a turbojet engine in laboratory of intelligent control systems of jet engines (LIRS LM). The implementation of this example is done in form of a state...
Small turbo-compressor engines represent a specific class of such engines with application in small aircraft and as auxiliary energetic units. Energetic efficiency and high safety standards are nowadays key factors in practical applications of small turbo-compressor engines. One approach to achieve these aims is to design and utilize progressive control algorithms. As turbo-compressor engines represent...
In order to achieve higher efficiency and to explore new progressive approaches in control of turbo-jet engines with more than one degree of freedom, the experimental turbojet engine MPM-20 has to be expanded with flexible geometry exhaust nozzle. The article is aimed at design of a mechanism, which would control the variable geometry exhaust nozzle of the engine allowing its practical application...
The presented paper proposes a design of a scientific research information system (SRIS), intended for real world use according to existing requirements and processes in the Laboratory of Intelligent Control Systems of Aircraft Engines. The novelty of the proposed SRIS lies in universal and narrow scope of the system and digitalization of existing manual processes, with the addition of algorithms...
The aim of this paper is mainly to present a way of designing a software application, where the final goal is to discovery new relevant (usually tacit) knowledge. A comparison of standard approach and proposed, problem driven design approach is also briefly denoted. The paper defines the need of general criteria that have to be met in the application development process and also components and functions...
In general, the problem field of effective control is a complex task that requires exact criteria formulation in experimental identification of complex systems. The economical effectiveness is the term used for technological processes. Increasing of the economical effectiveness usually encounters the need for a compromise in the acceptance of technical indicators with contradictory effect. In this...
This paper presents a general description of behavior of a complex thermodynamic system, represented by a small turbojet engine MPM 20. The main aim is to provide basic constraints of chosen measured parameters. Obtained results will be used in future data filtering, to recognize faulty output sensor values, critical situations and normal engine operation field. According to these constraints the...
Controlling position of an aircraft in its trajectory is a matter of high precision. The requirement on precision is becoming a priority primarily in the phase of landing, when the aircraft is in automated mode of landing controlling/maintaining lateral deviation along the trajectory by autopilot. The contribution is describing shaping and modeling control signals in the stage of final approach for...
Development of aircraft engines is aimed on increase of reliability, efficiency and ecology of operation. The presently still used hydro-mechanic control systems are being replaced by electronic ones characterized by high speed, precision of control and ability to optimize all operating regimes of an engine. One of the aims of research in the Laboratory of intelligent control systems of aircraft engines...
The paper presents the problem field of situational control in case of road tunnels. An analysis and description of traffic situations and regimes in road tunnels is presented. We also present the road tunnel decomposition from system point of view. Control regimes have been created and selected according to critical traffic situations. To support the theoretical and analytical part of the paper we...
The article deals with description of thermodynamic processes in a class of small turbojet engines with description of experimental and analytic modeling approaches to create a mathematical model. The model will describe a small turbojet engine as a system with one degree of freedom (fast exhaust nozzle), two degrees of freedom controlled by fuel supply and exhaust nozzle diameter. The article then...
The article deals with basic description of turboprop engines as a special class of turbine engines - advanced approaches in its modeling and control. The article will deal with description of analytical and experimental approaches in modeling of individual parts of the engine with description of their thermo-dynamics and states. Such engines are systems with two degrees of freedom and demand advanced...
Presented paper deals with infrared thermography (IRT) used for the diagnostics of Carpal Tunnel Syndrome (CTS). More studies on medical thermography in the relation with CTS diagnostics were published. Jesensek Papez B. et al. in 2008 and 2009 improved outcome with classification success rates near to or over 80% in dorsal segments of hand. The background of this study is the skin physiological temperature...
The paper deals with approaches in modeling of a complex electro-hydro-mechanical system. The proposed system is a fuel metering device that is a non-linear system with hysteresis and transport delays. The classical methods of modeling demand knowledge of mechanics and inner structure of the researched object. The paper deals mainly with experimental data driven methods of modeling. The created models...
This paper deals with modeling and diagnostics of complex systems and with a prestart diagnostics expert system design and implementation. In the area of modeling, the authors describe dynamic models of the speed dependence upon the fuel flow supply of a small turbojet engine MPM-20. The first model is done with use of neural networks and the second is a linear model. Both models are then methodologically...
This paper proposes a client warehouse application over Microsoft Dynamics Navision 5.0 enterprise resource planning system. The application has been created to meet criteria and constraints stated by real world company, or in terms of application itself, the future user. By means of effectiveness, created application shortens or eliminates some warehouse activities. Employees can easily roam in warehouse...
Acquisition of the most modern technical systems and their logistical support requires innovative approaches to be adopted in design, manufacturing and providing logistical services for their operation. The article aims to be a contribution to the acquisitonal approach termed as CALS, i.e. to a modern, computer-based logistics. Integrated logistical support provided through electronization of design...
The article is focused on diagnostics in the field of aviation turbo-jet engines. Evaluation of their technical status, and potential failures and pre-failure processes can be improved by monitoring their thermally loaded components. Part of the research in the given area also involves mathematical modeling of the channel measuring the exhaust gases temperature, using neural networks to compensate...
The paper deals with modeling and diagnostics of complex systems. In the area of modeling, the authors describe dynamic models of dependence of speed upon fuel flow supply of a small turbojet engine MPM-20. The first model is done with use of neural networks and the second is a linear model. Both models are then methodologically incorporated into the diagnostic and backup system of the optical sensor...
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