Name
Piotrovskiy Dmitriy Leonidovich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
Kuban State Technological University
Web site url
—
Articles count: 21
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
ANALYSIS OF QUALITY INDICATORS OF AUTOMATIC CONTROL SYSTEMS WITH NONLINEAR APPROXIMATION CONTROL LAW
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
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
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
In the article we have performed a comparative analysis
of a traditional system of air supply to the bioreactor
during the composting process and the developed system
with lateral air supply. We have proven to reduce
temperature variation of the substrate as a result of the
use of the ventilation system by 35%. During the
simulation, equal to 1.0 hour, a ventilation system with
side air flow provides a reduction of the accumulated
degree of heterogeneity of status parameters of the
substrate by 58%. Use of the ventilation system with side
air flow reduces the duration of technological cycle of
composting 7 %. 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
The article describes the process of creation of an adaptive control system with a reference model to stabilize the temperature of drying agent. It is shown that the closed systems work with the operated models is quite satisfactory and therefore can be implemented in production. The increase of the gain of the controller allows reducing the duration of the transition process by one third, almost without changing the dynamic cast
The article considers the issues of digital process of control of heating air in the dryer shaft
In the article we present questions of digital process control of heated air for drying seeds; it is shown that the change in the load of the heat source slightly changes the dynamics of the system for stabilizing the temperature of hot air, making it almost invariant with respect to perturbations. It is proved that the use of digital controller with dual differentiation significantly improves the performance of the automatic control system, excluding the increase astatism of the management system
The article formulates and solves the task of discrete
control in the thermophilic stage of the composting
process. It is shown, that considering the relay control
entity to maintain specified process conditions requires
the organization of the sliding mode. We have solved the
problem of minimizing the temperature deviation of the
substrate from the set values and the deviation of the
oxygen concentration in the gas phase of the bioreactor
from the specified values. The article shows an algorithm
to compute the discrete control of the composting
process in the thermophilic stage. 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
The article formulates and solves the task of discrete
control in the thermophilic stage of the composting
process. It is shown that considering the relay control
entity to maintain specified process conditions requires
the organization of the sliding mode. We have solved the
problem of minimizing the temperature deviation of the
substrate from the set values and the deviation of the
oxygen concentration in the gas phase of the bioreactor
from the specified values. The article shows the
algorithm to compute the discrete control of the
composting process in the thermophilic stage. This work
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