RU2728946C1 - Decision support system for maintenance of radar station for limited period of time - Google Patents

Abstract

FIELD: control systems.SUBSTANCE: invention relates to control systems. System for supporting decision-making for maintenance of a radar station for a limited period of time consists of a data input and storage unit, a unit for preliminary evaluation of time complexity of maintenance, unit for pre-estimation of volume of maintenance operations, unit for formation of maintenance operations queue, unit of ranging of selected maintenance operations, unit of information display.EFFECT: broader functional capabilities of system.1 cl, 2 dwg

Description

The invention relates to protection and control management systems and is intended for installation on military radar stations to support decision-making for maintenance in a limited time.

A device (patent No. 2386569) "Crew support system in hazardous situations" is known from the prior art, which contains sensors for the state of engines, fuel system, hydraulic system, power supply system, steering wheel control system (SSHU), landing gear and braking systems (STSHT), life support systems (SZH), anti-icing system, fire-fighting system, automatic control system (ACS), air signal system (SHS), navigation system (SS), onboard part of the satellite navigation system (SNS), strapdown inertial navigation system (SINS), radio altimeter (RV ), an instrumental landing system (PSP), a short-range radio technical system (RSBN), a meteonavigation radar station (MLRS), a critical mode warning system (SPKR), connected to a multiplex information exchange channel (MKTO), an information display system (SOI), a base knowledge (KB), aircraft configuration state recognition unit (BRSK), unit recognized flight modes (BRRP), an analyzer of the state of flight and navigation equipment (APSNO), an analyzer of the state of the aircraft equipment (ACA), an emergency recognition unit (BRAS), a forecast unit consisting of related blocks for modeling the dynamics of aircraft onboard equipment (BO) and Knowledge base of the development of emergency situations (AS) related to each other KB of the characteristics of the nuclear power plant and the knowledge base of the prevention of nuclear power plants, the computer for making decisions about the prevention of nuclear power plants (VPRP), the analyzer of the correctness of actions to prevent the accident (APDU), the calculator for making decisions about the transition to automatic control (VPRPAU) ), a warning unit about a violation of the correctness of actions (BPNPD), and the AC recognition unit is connected by the first, second, third, fourth inputs to the outputs of the aircraft configuration state recognition unit (BRSK), the flight mode recognition unit (FRRP), the PNO state analyzer of the equipment state analyzer (ACA), the aircraft, the inputs of which are connected to the MKIO, the fifth input is connected to the BZ characteristics of the AC, and the output of the unit is AC recognition is connected to the input of the calculator for making a decision on the prevention of emergency situation 9 (VPRPAS), associated with the AS prevention knowledge base, and its first output is connected to the IO, the second output is connected to the analyzer of the correctness of actions to prevent the AC (APDU), the second input of which is connected to BS prevention of AS, the APDP output is connected to the crew's action violation warning unit (BPNPD), the output of this unit is connected to the APDP analyzer input, the second BPNPD output is connected to the SOI, the third output is connected to the VPRPAU calculator, the second input of the VPRPAU calculator is connected to the prevention knowledge base AC, and its first and second outputs are connected respectively to the SOI and the ACS input, in addition, the LA-BO dynamics modeling unit is connected to the MKIO (patent RU 2128854, G05D 1/00, published on 10.04.1999).

The disadvantage of the known system is its narrow specialized focus, since it allows you to make recommendations only when the flight crew uses aviation equipment, and is not intended to issue recommendations for the maintenance (MOT) of the radar station (radar) in a limited time.

The objective and the technical result of the invention is to expand the functionality of the protection and control management system, which consists in providing the possibility of issuing recommendations on the rational choice of maintenance operations (TO) of the radar station (radar).

Achievement of the declared technical result and solution of the task is ensured by the fact that the decision support process for radar maintenance includes diagnostics of the technical condition of the radio equipment, issuing proposals to the head of the radar for the necessary maintenance operations, based on the current situation at a given time.

The invention is illustrated by the drawings shown in FIG. 12.

The essence of the invention

The decision support system for technical maintenance of the radar station includes (Fig. 1): a data input and storage unit (block 1); block for preliminary assessment of the time complexity of maintenance (block 2); block for preliminary assessment of the scope of the maintenance operation (block 3); a block for forming a queue of maintenance operations (block 4); block for ranking the selected maintenance operations (block 5); information display unit (block 6).

According to the invention, the definition of the maintenance of the radar is carried out using an automated decision-making support system for maintenance, located on the radar, built into the radar.

In the process of carrying out technical maintenance in various periods of operation, the input and storage unit (block 1) generates U data on the maintenance of the radar, including a set of data on the maintenance of the radar, described by the dependence of the form:

U = {n, L _i , N _i , No, N _A , N _S , t, Y _t , T _(ETO) , T _(TO1) , T _(TO2) , T _(CO) ≥0},

Where:

U - data on the maintenance of the radar;

n - the number of radar maintenance carried out

L _i - duration of the i-th TO;

N _i - the number of parameters affecting the operation of various systems during the behavior of the i-th maintenance operation for a given radar (expert data);

N _o - the total number of parameters affecting the operation of various systems of this radar (expert data);

N _A - a list of operations for the maintenance of the radar;

N _S - list of radar systems;

t is the time of the maintenance;

Y _t - the real value of the volume of the performed maintenance operation of the previous period.

T _(ETO) - time allocated for daily maintenance (ETO) according to operational documentation (ED);

T _(TO1) - time allocated for TO1 according to DE;

T _(TO2) - time allocated for TO2 according to DE;

T _(CO) - time allotted for seasonal maintenance (STO) according to ED.

As a preliminary estimate of the time complexity (block 2) allocated to the radar maintenance station, the normal distribution law of a random variable is used, since we do not know the time allotted in the future because of the constant change in the situation, but there is accumulated information about the time complexity for the past periods of the radar maintenance:

P _i = N / n,

Where:

P _i - coefficient of the average value of the time complexity of the i-th maintenance of the radar;

N - the number of coincidences of the time of maintenance of the radar for a given time cycle;

n is the number of radar maintenance performed.

Next, a random value of the time complexity of the radar maintenance is calculated (L _pr ):

Where:

L _i - time spent on the i-th maintenance.

In a preliminary assessment of the volume of operations (block 3), to maintain the technical condition of the radar, taking into account the availability of information on the volume of operations carried out for past periods and the current situation, the exponential smoothing method is used, which does not contain trend and seasonality.

In this regard, the overall smoothing factor showing the significance of the latest data (α _imp ) can be calculated as:

Where:

Ni is the number of parameters affecting the operation of various systems during the behavior of the i-th maintenance operation for a given radar

No - the total number of parameters affecting the operation of various systems of this radar.

Ni and No are predetermined by the experts of the industrial enterprise that produces this sample of equipment, and fit into the data input and storage unit (block 1).

Next, a forecast is made for the next period of volume (%) of a particular operation:

Where:

α _imp - smoothing coefficient showing the significance of the latest data, taken in the range from 0 to 1;

- прогноз на объем выполнения операции;

- forecast for the volume of the operation;

Y _it - the real value of the previous volume of the operation.

Next, in block 4, the sequence is selected according to the operations defined by the experts (IN _A ), from the set of operations for the maintenance of the radar, depending on the importance of the serviced systems (IN _S ), the upcoming tasks, climatic conditions, etc., using the method of analysis of hierarchies by T. Saati.

IN _A ∀V _j = ΣW _i Ω _ji

Where:

V _j is an indicator of the quality of the j-th alternative (operation);

wi - weight of the i-th criterion;

Ωji - the importance of the j-th alternative (operation) according to the i-th criterion. The recording of expert data is carried out at the design stage of the radar.

Further, when ranking the selected systems and forming the sequence of operations for the maintenance of the radar (block 5), the sign of the continuity of the operation is assigned.

For this, the coefficient of implementation of the requirements of operational documentation (K _RT ) is determined:

K _RT = T _TOj / T _TO

Where:

K _RT - the requirement implementation factor is a functional that depends on the technical condition of the radar (X _radar ), the design features of the radar (S _radar ), the forces and means involved in the maintenance of maintenance (R _TO ), maintenance operations carried out according to the operational documentation (N _TO ), the impact of the external environment (I) i.e. K _RT : ƒ [(X _radar ; S _radar ) (R _TO ; N _TO ) I] ≤1, characterizing the fraction of the time the j-th radar is at the TO, relative to the allotted time for the TO, according to the regulatory document.

Tto _j - the time allocated for maintenance for the j-th radar at a given time;

Tto. - the time allocated for maintenance in accordance with the regulatory document.

_Kpt can be "compatible" and "not compatible".

Next, the "sign of the continuity of the operation" is assigned:

"1" - provided that K _{tr is} "compatible" i.e.

но операцию можно провести частично с переносом оставшихся операций на следующее проведение комплекса ТО РЛС;"0.5" - provided that K _{rt is} "incompatible", i.e.

but the operation can be carried out partially with the transfer of the remaining operations to the next conduct of the radar maintenance complex;

но операцию прервать нельзя с переносом ее на следующее проведение комплекса ТО РЛС."0" - provided that K _{rt is} "incompatible", i.e.

but the operation cannot be interrupted with its transfer to the next carrying out of the radar maintenance complex.

First of all, operations are carried out that were transferred from the previous maintenance, if they are assigned the attribute "1".

In the second stage, operations are carried out that were transferred from the previous maintenance, if they are assigned the sign "0.5".

In the third stage, operations that need to be carried out in the specified period, and to which the attribute "1" is assigned.

In the fourth stage, operations that need to be carried out in the specified period, and the attribute "0.5" is assigned.

If the operation is assigned the sign "0", then it is transferred to the queue for the next maintenance.

Thus, the sequence of maintenance operations is determined, depending on a preliminary estimate of the time complexity or on the time allocated for maintenance by the senior manager.

If the time allotted for maintenance by the senior manager is less than the preliminary estimate of the time complexity or in the event of a sudden termination of maintenance, the operations carried out in part are assigned the sign "0.5", and not those carried out with the sign "0", with a transfer to the next maintenance, where again the "sign of the continuity of operations" is assigned.

In block 6, information is displayed on the sequence of rationally selected maintenance operations with the subsequent transfer of information to the knowledge base.

The system works as follows:

After turning on the radar (step 1, Fig. 2), data on the time allocated for maintenance is entered into block 1 (step 2, 3, Fig. 2). From the output of block 1, information about the number of maintenance performed, their duration and time allocated for maintenance is fed to the input of block 2, in which a random value of the time complexity of maintenance is calculated. Also, the input of block 3 from the output of block 1 receives information about the number of parameters affecting the operation of various systems during the behavior of the i-th maintenance operation for a given radar, and the total number of parameters affecting the operation of various systems of this radar, in which a preliminary estimate of the volume is calculated performing the i-th operation (step 4, Fig. 2). The data of the expert group from the output of block 1 goes to the input of block 4, where the order of carrying out maintenance operations is formed according to the importance of their performance (step 5, Fig. 2).

From the outputs of blocks 1-4, information is sent to the input of block 5, where, based on the allocated time for carrying out maintenance received from the output of block 1, a random value of the time complexity of carrying out maintenance received from the output of block 2, a preliminary estimate of the amount of execution of the i-th operation received from the output of block 3, the order of carrying out maintenance operations according to the importance of their performance, which came from the output of block 4, a sign of the continuity of operations is formed and a queue is formed based on the ranking of the selected maintenance operations (step 6, Fig. 2).

Information from the output of block 5 about the sequence of the selected set of maintenance operations is fed to the input of block 6 (step 7, Fig. 2), where information about the selected maintenance operations is displayed, as well as about the operations that are transferred to the next maintenance. Further, from the output of block 5, information about the types, time and volume of performed maintenance operations is transmitted to the input of block 1 (step 8, Fig. 2).

Thus, the claimed invention makes it possible to provide the possibility of issuing recommendations on the rational choice of operations for the maintenance of the radar station in a limited time.

Claims (1)

Decision support system for the maintenance of a radar station in a limited time, consisting of a data input and storage unit, a unit for preliminary estimation of the temporary complexity of maintenance, a unit for preliminary estimation of the volume of maintenance operations, a unit for forming a queue of maintenance operations, a unit for ranking selected maintenance operations , the information display unit, while from the output of the data input and storage unit, the stored data on the number of maintenance performed and on the volume of the i-th maintenance operation of the radar station are fed to the input of the unit for preliminary estimation of the temporary complexity of maintenance and the unit for preliminary estimation of the volume of maintenance operations maintenance, respectively, and information on the time allotted for maintenance, according to the operational documentation, the time allotted for technical technical maintenance at a given time, and the data of the expert group on the selected systems for maintenance - to the input of the block for forming the queue of maintenance operations, in which a preliminary estimate of the time complexity for the upcoming maintenance is calculated, a preliminary estimate of the volume of the i-th maintenance operation, and information on the order of maintenance operations according to the importance of their performance with the transfer of this data to the inputs of the maintenance operations ranking unit, in which the selected maintenance operations are ranked taking into account the continuity of operations and the formation of a queue with further transfer of information to the input of the information display unit to display the solution and to the input of an input and storage unit for storing data.

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