name
Piotrovskiy Dmitriy Leonidovich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
• Kuban State Technological University
Research interests
-
Web site url
—
Current rating (overall rating of articles)
0
TOP5 co-authors
Articles count: 21
Сформировать список работ, опубликованных в Научном журнале КубГАУ
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Description
In the article we have shown the calculation of optimal parameters of stabilization of pressure of steam in the boiler with changing the fuel supply
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ALGORITHMS AND METHODS FOR DETECTION AND RECOGNITION OF HAND GESTURES ON VIDEO IN REAL TIME
Description
The article deals with methods for detection and recognition of hand gestures on video in real time and writing a modified algorithm on their basis
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ANALYSIS OF QUALITY INDICATORS OF AUTOMATIC CONTROL SYSTEMS WITH NONLINEAR APPROXIMATION CONTROL LAW
Description
The subject of research of this work was the study of the quality of control processes in a nonlinear automatic control system with an approximating the control law. In the known published works there are no results of such studies, which makes it difficult to synthesis a nonlinear control system for multimode objects in applied biotechnology, including technological objects of the agro-industrial complex. A comparative analysis of the quality of regulation in the transient and steady-state regimes is carried out. It is shown that the approximation method used for the synthesis of the nonlinear control law provides a linear dependencies in steady-state and close to them modes in combination with relay modes in transient regimes, which is a positive factor for improving the quality of regulation in multimode control systems. It does not necessary to determine the moments of switching the dependencies in the control law when changing modes
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COMPARATIVE ANALYSIS OF MODELS OF VENTILATION OF THE SUBSTRATE WITH THE COMPOSTING
Description
In the article we consider the questions of modeling of temperature changes in the composting process, the changes of oxygen concentration and temperature with the air from the environment, produced the effect of composting heat exchange mass with the environment, the selected state variables and the control bioreactor, the dependence of the coefficients of the system equations of motion from the variable state of the object. This article was prepared in the framework of the scientific project 16-48-230441 a(R) "Mathematical modeling of the processes occurring in the automated installation for year-round production of organic fertilizers in the conditions of the Krasnodar region", financed by RFBR and the administration of the Krasnodar region
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THE STUDY OF LEARNING ALGORITHMS OF NEURO-FUZZY SYSTEMS CONTROL OF BIOTECHNOLOGICAL PROCESS
Description
The subject of study of this work was learning algorithm of neuro-fuzzy systems with different membership functions. In the prior works there are no published studies of such studies, making it difficult synthesis of neuro-fuzzy control system with new objects in the application of biotechnology, including technological agribusiness entities. A comparative analysis of learning algorithms of neuro-fuzzy system with different membership functions using the method of error back propagation and а hybrid method. For this we used a training sample that contains data of temperature and concentration of dissolved gas in the culture liquid: oxygen (pO2), carbon dioxide (pCO2) of a biotechnological process. It is shown that the hybrid method carries out training of a neural network for the number of periods is 23 times smaller than the algorithm back-propagation errors. The studies found that the two-sided Gaussian membership function provides the smallest learning error of the network δ equal of 3,28•10–3, compared to the other, giving the largest error of training the neural network δ=0,138. Therefore, the task of running the fermentation process effective is the use a hybrid method of education and two-sided Gaussian membership functions. According to the research, we can conclude that for the adaptation of neuro-fuzzy network ANFIS and fuzzy inference system Sugeno zero order to solve biotechnological process control tasks microbiological production efficiency is to use a hybrid method of education and bilateral Gaussian membership functions
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Description
In the article investigation and analysis of various types of flow meter, with the aim of choosing the most reliable gauges for the manufacture of juice are offered. Choosing the flow meter, its integration into the general system of automatic control was also considered. Investigations were carried out in the field of modern measuring techniques for the choice of a measuring complex
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MATHEMATICAL MODEL OF A DRYING PROCESS OF CORRUGATED CARDBOARD
Description
The feature of the process of drying of corrugated cardboard is different drying processes on three sections of the drying table. The article solves the problem of obtaining a mathematical model of drying process of corrugated cardboard. This structural identification process, defined the input and output parameters, denoted the transmission coefficients for the control channels and indignation
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Description
In the article, we present the mathematical model of a ventilation system with variable air flow along the vertical axis of the reactor in the composting process. We have solved the problem of the choice of the method of supplying air to the bioreactor, reducing the temperature of the substrate along the axis of the bioreactor. The proposed method provides a reduction of temperature and moisture content of the gas phase, which leads to a change in the dynamics of the composting process. This article was prepared in the framework of the scientific project 16-48-230441 a(R) "Mathematical modeling of the processes occurring in the automated installation for year-round production of organic fertilizers in the conditions of the Krasnodar region", financed by RFBR and administration of the Krasnodar region
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MODELING OF THE PROCESS OF STABILIZATION OF PRESSURE OF STEAM IN THE STEAM BOILER
Description
The article submits a mathematical dynamic model of varying pressure of the steam, depending on fuel supplying in the boilers
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Description
The process of drying of a corrugated cardboard is described and the mathematical model is resulted in this article. Questions of use of the received model are considered at process research
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