Fuzzy Identification of Technological Objects
Journal Title: Energy Engineering and Control Systems - Year 2015, Vol 1, Issue 1
Abstract
In practice, information on statistical characteristics of series mode interference is available only in certain cases. Moreover, for this or that reason input variables are measured inexactly, and their values can be specified with some uncertainty. The identification task is significantly complicated when the measuring signal passes through a natural channel with unknown statistical characteristics. This is, for instance, the case with well drilling when axial weight on the drilling bit and drilling bit rotations per minute are gauged by above-ground devices. The study resulted in developing a method of building polynomial empirical models for a case when input factors are fuzzy variables with known Gaussian membership functions. The output variable of the model was shown to be also a fuzzy variable in such conditions; the corresponding membership function on the basis of which the identification task is formulated was obtained. To determine the parameters of the model with fuzzy input factors, the least square method was applied, which allowed obtaining a respective formula incorporating the information on input factors fuzziness.
Authors and Affiliations
Mykhailo Horbiychuk, Taras Humeniuk, Dmytro Povarchuk
Keywords
Related Articles
- EP ID EP253638
- DOI 10.23939/jeecs2015.01.035
- Views 99
- Downloads 0
Investigations on the Innovation Model of Exergy Effectiveness of Air Conditioning System for Operating Cleanrooms
The issue of fuel and energy saving is a top priority for energy technological systems (ETS) such as air conditioning systems (ACS). Thus, reduction of energy consumption for ACS requires optimization of these systems wh...
Modern Wind Turbines Capacity Utilization in Real Conditions
The development of the national wind power industry in Ukraine faces a number of problems because of the lack of sufficient information on the peculiarities of the operating modes of wind farms under real-life conditions...
The Energy Efficiency of the Solar Heating System with Combined Solar Collector
This article analyzes the influence of transparent coating on the efficiency of the combined solar collector. The prospects of solar heating systems’ usage, their main problems and their solutions are described. Heat of...
Optimization of Gas Dynamical Subsystem of Transducers for Measurement of Gas Flow Temperature
The main types of errors which occur while measuring the temperature of gas flows, including flows of fuels, are determined by the conditions of thermal balance at the interaction of the sensor of the temperature transdu...
Gas Dynamical Capillary Flowmeters of Small and Micro Flowrates of Gases
The possibility of application of glass capillary tubes (CTs) as sensors of small and micro flowrates of gases was justified. The accuracy of a number of CTs flowrate equations was analyzed on the basis of experimental s...