Технические науки / 1. Металлургия
c.e.s. Shchepetov A.V., d.e.s. Senkus V.V.
Novokuznetsk branch-institute of FEI HPE "Kemerovo State
University",
Russia, Novokuznetsk
The
calculation algorithm of the approachability
of
administrative influences
in
organizational-technological systems
Enterprises
with a continuous, cyclical technological process, likelihood character in the
description of output and intermediate results of production, multiple performances
of technological operations, are classified as organization of
traditionally-technological systems. Such systems include, in the main,
metallurgical factories with the full technological cycle, coal mines, chemical
of the undertaking.
Organizational-technological
systems, as well as all of the managed systems, have structural-parametric
description, the characteristics of the functioning, the external and internal
information descriptions, the target function, the system of criteria, defined
by the laws of the control.
Based on the
work [1,5], organizational-technological system are characterized by:
property of
survivability - the ability of a system to perform at least the minimum volume
of predefined functions, including at external influences, those are not provided
by the conditions of its normal functioning
property of
controllability - the possibility of
bring by management effects-of from the current state to the desired setting
status for a fixed amount of time or for a specified finite number of steps of
the control (impacts);
property of
observability - possibility of obtaining reliable information about the managed
system for any interval of time before the requested or current;
property of
adaptation - changing of the structure and parameters, including the change of
the structure of control itself for the global and local goals, and the property
of topological adaptation consists in a space-time change (setting up) the structure
of production, that is, technological units, transport communications,
direction, intensity and other parameters of the resource, information and
energy-economic nature.
Quality
measure of the adaptation of the organizational-technological system is
performance of the values of the objective function with an accuracy of up to
specified criteria. Considering and analyzing the procedures of adaptation, it
should specify the type and composition of the components included in the
objective function of the system. Traditional presentation of the objective function,
for example, in the economic literature, is associated with the maximization of
the profits to a specified limited or unlimited period of time. Such an
attitude to the systemic issues can be explained, in our opinion, the lack of
attention to systemic issues and insufficient qualification of researchers.
Based on the
concepts put forward and developed, for example, in works [2,4], it can be argued
that the objective function of the production system has a fundamentally
different type - maximization of the time of the life cycle of the system for
compulsory execution during its existence, the set of values of the criteria.
In some works of this type of the target function is called its global type.
Such a view of the target function in many respects explains and substantiates
the expediency of the functions of adaptation, and the need to develop and
implement adaptation procedures is caused by necessity of requirements to
ensure the survivability of the system.
It should be
taken into consideration the fact that in the development of information model,
for example, for the conditions of a metallurgical complex, you need to
allocate enough of a large data set (in the shops of the complex
"steel-hire" is registered up to 1500 parameters only for one technological
route) minimal set of data, on the basis of which it is possible to analyze the
state of production.
It is
established, that for the problems of the structural-parametric adaptation is
necessary for operational analysis of the dynamics of the four parameters: the
grade of steel, the weight of steel on the operations and divisions, the
temperature prior to and after the beginning of the technological operation,
start and end time of the technological operation.
Chemical
analysis, on the basis of which is determined by the affiliation of steel to
one or another brand, can be successfully replaced by the id of steel grades.
Similarly, the size of rent can be classified by groups of accessories (rails,
lightweight profile, heavy profile, billets). Further, the formation of
analytical information on the state of production, it is necessary the
development and implementation of correct mathematical model, for example,
presented in the work [3].
Each
operational management impact on organizational and technological parameters of
metal-stream in the complex of workshops "steel-hire" metallurgical
combine is directed at bringing managed process of perturbed state in a given
state. Exposure of metal-stream to controlled and uncontrolled disturbances
(e.g., for hot transit metal in the normal state of production is, on average,
4-7 managerial impacts on technological route), defines as the requirements of
their minimization, as well as the requirements of achievability of the final
result of the impact. System requirements for the achievement of management
solutions for operational management of the complex "steel-hire", implemented
in the form of the block-specific algorithms include:
Phase 1. Formation
of such information image of the controlled process, during which there is no
or it would be minimal the error control, caused by doubtful information.
Phase 2.
Generating of such management solution, which would be in the minimum number of
steps management has led a managed process of perturbed state in a given state.
Phase 3.
Forecasting of the impact results of the specific to the managed process and
the determination of the prohibited actions, which generate new resent-owned by
the state of production.
Phase 4.
Correction of the forecast for the previous implementation, made in the
previous step, and a comparison of the predicted values of the parameters with
the required values.
Phase 5.
Calculation temporary and technological
parameters for allocated follower of operations within the technological route,
the correction of which is the management influence.
Phase 6.
Calculation of possible changes of parameters of operations for the conjugate
reagent strategic routes and formation of the list of "forbidden
states", if it exists, return to step 3.
Phase 7.
Calculation and generation of the obtained values of achievement, presented in
the form of temporary recruitment of values of parameters of operations.
The inclusion
of the software implementation of the proposed algorithm in the act of an automated
system operative-dispatching management of the "steel-hire" OAO "Novokuznetsk metallurgical
combine" (Novokuznetsk, Kemerovo region) has resulted in the online mode
count the attainability of the technological route provided in the form of
temporary recruitment of values of parameters of the operations, and the time
of work program for the normal standing production of does not exceed 3-5
seconds.
Literature
1. Voronov A.
A. Fundamentals of the theory of management [Text] / A.A. Voronov. - M.: Nauka,
1997. – 370p.
2. Glushkov
V.M. Models of dynamic systems [Text] /
V.M. Glushkov, etc. - Kiev: Техніка, 1990. – 200p.
3. Kudrin
B.I. Metallurgical plant and its system analysis for the design [Text] / V.A. Avdeev, B.I. Kudrin. - M.:
Gipromez, 1992. – 104p.
4. Kudrin
B.I. Models and algorithms of the operational management [Text] / B.I. Kudrin,
V.K. Butorin, V.A. Avdeev. - M.: "Electrica", 1999. - -140p.
5. Moiseev
N.N. Mathematical problems of system analysis [Text] / N.N. Moiseev. - M.:
Nauka, the Main editorial office of physical-mathematical literature, 1981. –
488p.
