Name
Malyshev Sergey Alekseevich
Scholastic degree
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Academic rank
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Honorary rank
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Organization, job position
Kuban State Agrarian University
Web site url
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Articles count: 2
A methodology for a multilevel system approach to
integrated optimization of processes of harvest,
transportation and cleaning of the grain during the
harvest by the method of «Neveyka» has been
developed. The main method of research - is a
queuing theory of all components of the yield except
straw. The System consists of 6 interconnected
subsystems with their inputs and outputs, and its own
optimality criteria. On the first level of optimization,
the most efficient way of wheat harvest «Neveyka»
has been proved. On the second level - the total
duration of the harvest with allowance for 4-5
cultivated wheat sorts, each of which is harvested
within 5 calendar days, was optimized. The third
level proves the requirement of combine harvesters
and transport vehicle. On the fourth level - the
combinations of harvesting and transport units are
optimized on the criterion of the minimum amount of
the loss on the mutual expectations of harvesters and
vehicles. The fifth optimization level proves the
capacity of the reception station of the grain storage,
where the main criterion for optimality is the least
amount of losses on the mutual waiting time of the
transportation vehicles, and the additional criterion is
the minimum waiting time of vehicles in the queue.
On the sixth and the final stage the specific annual
economic effect (rub/ha or rub/t) from the
implementation of the proposed technology is
determined. It is established, that during the grain
harvesting, transporting and processing of heap there
are elementary or Poisson probability flows of
requirements for service. The Representation of
harvesting - transport link in the form of closed
queuing system of independent harvesting unit. An
approach to the justification of failure-free operation of a station for cleaning grain heap and storage of
grain and chaff is presented
Using queuing theory (QT) for the new technology of harvesting of grain crops by the method of «Neveyka», the method of optimal designing of maintenance system and elimination of failures of units used in cleaning technology and post-harvest processing of grain has been considered. On the basis of a systematic approach, taking into account the probabilistic nature of the change of operating factors the methodical directions of validity test of the adoption of the Poisson distribution in the calculation of operating modes were substantiated to optimize maintenance level units and eliminate failures in the operation of the machines, the probability of failure-free operation of harvesting and transport aggregates. The probability of failure-free operation of each type of units used in the cleaning of grain depends on their number and intensity of service. According to the numerical value the probability of failure-free operation of units is equal to the probability of idle units for maintenance and elimination of failures. Since it is impossible to determine separately the value of the probability of failure-free operation for all types of units and all kinds of services at different operating conditions the generalized solution has been offered, this solution is applicable to any serviced unit during both the technical inspection and elimination of failures. By specifying the desired value of the probability of failure-free operation of harvesting units, according to their number we can determine the appropriate ratio between the average length of service and the average period of time between incoming service requirements (technical inspection and elimination of failures) from one unit