Discrete event based simulation method for wartime equipment maintenance

Abstract

This invention relates to a wartime equipment maintenance simulation method based on discrete events, belonging to the field of simulation technology. The method includes: simulating and modeling the wartime maintenance support system, including: determining the number of equipment maintenance support forces at each level and the number of basic repair units within each level of equipment maintenance support force; modeling the maintenance capabilities of the equipment maintenance support forces; modeling the repair tasks of the maintenance support system, including: calculating the total number of repair task inputs, the number of repair tasks entering each level of equipment maintenance support force, and the total number of repair task outputs; abstracting and refining the maintenance activities involved in wartime equipment maintenance activities to obtain multiple equipment maintenance simulation events based on discrete events, including: battle damage assessment simulation, wartime rescue simulation, wartime emergency repair simulation, and repair completion and relocation simulation. The method of this invention improves the efficiency and capability of wartime equipment maintenance.

Description

Technical Field

[0001] This invention relates to the field of simulation technology, and in particular to a wartime equipment maintenance simulation method based on discrete events. Background Technology

[0002] Currently, due to the relatively late development of wartime equipment maintenance and support simulation, there is very little research on model building and simulation technology in the field of wartime equipment maintenance and support, which still falls far short of the research needs of wartime equipment maintenance theory. Simulation, as a technology for experimental research using models, has a long history. With the continuous development and maturity of computer technology, the application fields and scope of simulation experiments are becoming increasingly wider, especially in situations requiring arduous actual experiments (consuming a lot of financial, material, human, and time resources), where simulation technology often brings breakthrough assistance.

[0003] How to utilize simulation technology to improve the quality of equipment support training for the armed forces and enhance the theoretical and applied level of maintenance support is one of the technical problems that needs to be solved at present. Summary of the Invention

[0004] The purpose of this invention is to at least address one of the aforementioned technical deficiencies.

[0005] Therefore, the purpose of this invention is to propose a wartime equipment maintenance simulation method based on discrete events, which can improve the efficiency and capability of wartime equipment maintenance and provide support for equipment management departments to study the grouping optimization and configuration integration of wartime equipment maintenance resources.

[0006] To achieve the above objectives, embodiments of the present invention provide a wartime equipment maintenance simulation method based on discrete events, comprising:

[0007] S1, to simulate and model the wartime maintenance support system, including: according to the wartime equipment maintenance support system, dividing the equipment maintenance support force into level j, and determining the number of equipment maintenance support forces at each level and the number of basic repair units in each level of equipment maintenance support force; S2 models the maintenance capability of equipment maintenance support forces, where the average repair capability of the j-th level equipment maintenance support force on day d is denoted by . for

[0008] in, To ensure the availability of equipment maintenance and support capabilities; To improve the availability of the jth equipment maintenance and support force; The working hours of the j-level equipment maintenance and support force in the designated area; The number of personnel in the basic repair unit within the j-th level equipment maintenance and support force; The utilization coefficient of repair work time for equipment maintenance and support forces. The utilization coefficient of repair work time for the j-th level equipment maintenance and support force; The technical level coefficient of the equipment maintenance and support personnel. The technical quantity coefficient of repair personnel in the j-th level equipment maintenance and support force; The duration of the repair cycle for equipment maintenance and support forces. The duration of the repair cycle for the j-th level equipment maintenance and support force; The average maintenance workload for each piece of equipment repaired by the j-th level equipment maintenance and support force; S3, Modeling the repair tasks of the maintenance support system, including: calculating the total number of repair task inputs, the number of repair tasks entering each level of equipment maintenance support force, and the total number of repair task outputs; wherein, the total number of repair task inputs is the total number of damaged equipment entering the maintenance support system each day, and the total number of damaged equipment includes the number of equipment with technical malfunctions and the number of equipment damaged in battle; the total number of repair task outputs is the number of equipment repaired by the maintenance support system during combat. S4 abstracts and refines the maintenance activities involved in wartime equipment repair activities, resulting in multiple equipment maintenance simulation events based on discrete events, including: battle damage assessment simulation, wartime rescue simulation, wartime emergency repair simulation, and repair completion and relocation simulation; it performs simulation function calculation on the function and operation mechanism of each equipment maintenance simulation event, and outputs the battle damage assessment results.

[0009] Furthermore, based on relevant military standards, the equipment maintenance and support levels are structurally arranged as follows: strategic-level equipment maintenance and support forces, operational-level theater-level equipment maintenance and support forces, combat group-level tactical-level equipment maintenance and support forces, and tactical-level unit / group equipment maintenance and support forces, etc. Each level of equipment maintenance and support force is represented by Bj, where j = 1, 2, 3, 4, ... n The number of maintenance and support personnel allocated to each level of equipment is set as follows:

[0010] in, j =1,2,3,4,…, n; x It is a positive integer; a j For the first j The lower limit of the number of maintenance and support personnel for advanced equipment. b j For the first j The upper limit for the number of maintenance and support forces for advanced equipment; following the military logic of progressively increasing the number of maintenance and support forces from strategic to tactical levels, the higher the strategic level, the greater the capacity. a j , bj The higher the value, the later the tactical level. a j , b j The smaller the value.

[0011] Furthermore, in S1, the number of basic repair units for equipment maintenance and support forces at all levels is as follows: ( j =1,2,3,4,…, n ) in: x It is a positive integer; c j For the first j The minimum number of basic repair units required for the maintenance and support of advanced equipment. d j For the first j The upper limit of the number of basic repair units in the equipment maintenance and support force; following the military logic of progressively increasing unit size from tactical to strategic levels, the higher the level, the more it is adjusted from tactical to strategic. c j , d j The values ​​generally show an increasing trend.

[0012] Furthermore, in S3, the calculation of the number of repair tasks entering each level of equipment maintenance and support force includes: assuming the repair task input for day d of the operation is...

[0013] On day d of the operation, the number of repair tasks performed by the j-th level equipment maintenance and support force, among which...

[0014] in, This is the initial value for the number of equipment participating in the battle on day d of the operation; The equipment loss rate on day d of the operation; For the combat mission depth on the dth day of the operation; For mobility coefficient, The mobility coefficient of the equipment; The average fault strength, The average failure strength of the equipment; This represents the conditional probability of a major overhaul. The conditional probability that battle-damaged equipment requires major repair; Let be the conditional probability that is unrepairable. The conditional probability that a battle-damaged piece of equipment is unrepairable; The probability that equipment damaged due to technical failure will be entered into the j-th level equipment maintenance and support force; This refers to the probability of entering the j-th level equipment maintenance and support force due to combat damage.

[0015] Furthermore, in S3, the total output of repair tasks is calculated, including: assuming the operational day d, the number of repairs performed by the j-th level equipment maintenance and support force. for:

[0016] in, The number of repair tasks performed by the j-level equipment maintenance and support force on day d of the operation. On day d of the operation, the average repair capability of the j-level equipment maintenance and support force.

[0017] Furthermore, in S4, the battle damage assessment simulation includes: Qualitative assessment of weapon and equipment damage includes setting multiple damage levels for the degree of damage to weapons and equipment on the battlefield. Qualitative assessment of weapon and equipment damage includes setting multiple damage levels for equipment maintenance and support forces. Time spent on equipment repair work An assessment was conducted, in which

[0018] in, This represents the evaluator's skill level coefficient. Applicability coefficient of testing tools Equipment testability coefficient.

[0019] Furthermore, based on the current battlefield equipment and the extent of combat damage, a combat damage level is set for the degree of damage to weapons and equipment on the battlefield; If the combat damage level of weapons and equipment is level 1 or 2, then rescue operations should be carried out, followed by repair and restoration. If the combat damage level of weapons and equipment is level 3, emergency operations will be carried out, and it will be determined whether to continue the emergency. Otherwise, the combat damage level of the equipment maintenance and support forces will be classified according to the combat damage level, and the corresponding level of rescue will be carried out. If the damage level of weapons and equipment is level 4 or 5, the damage level of the equipment maintenance and support force shall be classified according to the damage level, and the corresponding level of rescue shall be carried out. If the damage level of weapons and equipment is 6, then exit the battle; If the combat damage level of the equipment maintenance and support force is Level 1, then determine whether the brigade-level equipment maintenance and support force is available. If so, the brigade will provide emergency repair support; otherwise, determine whether the combat group-level equipment maintenance and support force is available. If the combat damage level of the equipment maintenance and support force is level 2, then determine whether the equipment maintenance and support force of the combat group is available; if so, the equipment maintenance and support force of the combat group will provide support for emergency repairs; otherwise, determine whether the equipment maintenance and support force of the theater or campaign is available. If the battle damage level of the equipment maintenance and support force is level 3, then determine whether the equipment maintenance and support force of the theater is available; if so, the equipment maintenance and support force of the theater will provide support for emergency repairs. If the combat damage level of the equipment maintenance and support force is level 4, then it will be transferred to the strategic equipment maintenance and support force.

[0020] Furthermore, in S4, the wartime rescue simulation includes: The simulation of self-rescue and towed rescue scenarios in battlefield recovery is conducted. The theoretical rescue time LTj is generated by the battle damage assessment simulation, while the actual rescue time STj follows the distribution below. ; Simulations were performed on evacuation scenarios during battlefield recovery, including: calculating the time Tj for the recovery team to advance to the damaged equipment's location and the time Th for towing the damaged equipment from the damage location to the appropriate equipment repair and support force. Furthermore, in S4, the wartime emergency repair simulation includes: simulating the repair time and simulating the implementation of repairs; The simulation of repair implementation includes: if multiple pieces of equipment are waiting for repair simultaneously, the equipment with the shortest repair time will be repaired first; if the equipment is not repaired in the current simulation step, the repair activity for that equipment will continue in the next simulation step until it is repaired; the repair time... for:

[0021] in, The technical skill level coefficient of the repair personnel. To ensure the completeness of maintenance equipment, To ensure the satisfaction rate of maintenance equipment.

[0022] Furthermore, in S4, the simulation of repair and relocation includes: setting the relocation time using... express:

[0023] in, represents the actual distance between the starting point and the destination; c is the terrain correction factor.

[0024] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: This invention proposes a wartime equipment maintenance simulation method based on discrete events, which carries out modeling and simulation of wartime equipment maintenance activities, opens up new ideas for research and training on battlefield rescue and repair of military equipment during peacetime, improves the quality of military equipment support training, and enhances the theoretical and applied level of military maintenance support.

[0025] This invention first integrates wartime equipment maintenance and support operations, abstracting four discrete events—damage assessment, wartime rescue, wartime repair, and return to service after repair—from the entire wartime maintenance process. Several factors influencing the overall efficiency of maintenance are then analyzed and studied one by one. Next, corresponding simulation models and functions are constructed. Finally, through optimized scheduling (seeking the optimal queuing method), the wartime equipment maintenance activities based on discrete events are simulated, outputting wartime equipment availability rate, equipment repair rate, and equipment repair facility utilization rate. This provides technical support for improving wartime equipment maintenance efficiency and capabilities, and also provides theoretical support for equipment management departments to study the optimization and integration of wartime equipment maintenance resources, verify the scientific validity and rationality of wartime equipment maintenance plans, and assist in wartime equipment maintenance command and decision-making.

[0026] The discrete-time wartime equipment maintenance simulation method proposed in this invention, through in-depth analysis of the characteristics of wartime equipment maintenance such as high time limit requirements, harsh maintenance environment conditions, complex causes of damage, and large differences in technical standards compared with peacetime, combined with the overall planning and meticulous arrangements of wartime equipment maintenance, and the actual maintenance requirements such as on-site and parts replacement repair, constructs a complete simulation model and algorithm system, which realizes a clear characterization and efficient solution of the complex wartime maintenance process.

[0027] This invention achieves the following innovations at the technical level: (1) A simulation framework based on discrete time was proposed, which for the first time integrated the key links of battle damage assessment, rescue, repair and reconstruction, and return to construction, solving the problems of excessive fragmentation of maintenance and discontinuous state transmission in traditional methods; (2) A configurable mathematical model for maintenance capability and repair time was designed. By introducing multi-dimensional influence coefficients such as personnel technical level, equipment availability rate, and material satisfaction rate, the accuracy and reliability of the simulation results were greatly improved. (3) A maintenance scheduling optimization algorithm based on shortest job priority was implemented, which can quickly solve the optimal queuing scheme in the scenario where multiple pieces of equipment are waiting to be repaired at the same time, effectively improving the equipment integrity rate and maintenance support force utilization rate during wartime.

[0028] Through the above-mentioned technological innovations, this invention not only provides scientific and technical means for equipment management departments to study issues such as the grouping optimization and configuration integration of wartime maintenance resources, but also provides strong theoretical and data support for verifying the scientificity and rationality of wartime equipment maintenance plans and assisting in wartime equipment maintenance command and decision-making.

[0029] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 A flowchart of a wartime equipment maintenance simulation method based on discrete events according to an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the classification relationship of wartime rescue and repair according to an embodiment of the present invention; Figure 3 This is a flowchart illustrating the wartime rescue and repair process according to an embodiment of the present invention. Figure 4 This is a flowchart illustrating the maintenance simulation operation of a single emergency repair team according to an embodiment of the present invention. Figure 5 This is a simulation diagram illustrating the process of a single emergency repair team's maintenance event according to an embodiment of the present invention. Figure 6 This is a flowchart illustrating the maintenance process for brigade-level equipment according to an embodiment of the present invention. Figure 7 This is a simulation result curve of equipment availability according to an embodiment of the present invention; Figure 8 This is a simulation result curve of equipment repair rate according to an embodiment of the present invention; Figure 9 This is a graph showing the simulation results of the equipment repair mechanism utilization rate according to an embodiment of the present invention. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] This invention proposes a wartime equipment maintenance simulation method based on discrete events. The method first performs simulation modeling of the wartime maintenance support system, repair capabilities, and repair tasks. Then, it abstracts and refines the maintenance activities that may be involved in the entire wartime equipment maintenance process, summarizing the equipment maintenance simulation events based on discrete events, mainly including battle damage assessment, wartime rescue, wartime emergency repair, and repair completion and relocation. The functions and operational mechanisms of these four discrete events are then solved using simulation functions. Finally, based on the battle damage assessment results, taking single-repair team maintenance and brigade-level equipment maintenance simulations as examples, simulation case studies of battlefield rescue, battlefield emergency repair, and repair completion and relocation are run based on queuing theory, and the simulation results are output for scientific analysis. It should be noted that in the wartime equipment maintenance support process, the process and functions of equipment maintenance support also differ due to the different support objects (equipment types). This invention mainly uses the simulation modeling and operation mechanism of land combat equipment maintenance support as an example to illustrate the wartime maintenance support simulation modeling and system.

[0033] like Figure 1 As shown, the wartime equipment maintenance simulation method based on discrete events according to an embodiment of the present invention includes: S1 is used to simulate and model the wartime maintenance and support system.

[0034] Wartime equipment maintenance and support forces are multi-layered and complex in structure. In order to give full play to the role of equipment maintenance organizations and restore as much damaged equipment as possible in a short period of time, when simulating and modeling the wartime maintenance and support system, it is first necessary to determine the number of equipment maintenance and support forces at each level and the number of basic repair units in each level of equipment maintenance and support forces, based on the wartime equipment maintenance and support system organization.

[0035] Based on the wartime equipment maintenance and support system, the equipment maintenance and support forces are divided into levels j, and the number of equipment maintenance and support forces at each level and the number of basic repair units in each level are determined.

[0036] Specifically, the first step is to determine the number of equipment maintenance and support personnel (Bj) at each level.

[0037] Based on relevant military standards, the equipment maintenance and support levels are structurally arranged as follows: strategic-level equipment maintenance and support forces, theater (operational) level equipment maintenance and support forces, combat group (tactical) level equipment maintenance and support forces, and unit / team (tactical) level equipment maintenance and support forces. In other words, each level of equipment maintenance and support force is designated as B. j (j=1,2,3,4,…, n The number of maintenance and support personnel allocated to each level of equipment is set as follows: ( j =1,2,3,4,…, n (1) in, x It is a positive integer; a j For the first j The lower limit of the number of maintenance and support personnel for advanced equipment. b j For the first j The upper limit of the number of maintenance and support forces for class-level equipment; according to the military logic of gradually increasing the number of maintenance and support forces from strategic to tactical levels, the higher the level (strategic level). a j , b j The higher the value, the later the level (tactical level). a j , b j The smaller the value.

[0038] Taking land-based combat equipment maintenance and support as an example, the organizational structure is arranged according to a three-tiered support system of strategic, operational, and tactical levels, planned to be divided into four levels, i.e., j = 1, 2, 3, 4. Levels 1-4 are, in order, brigade (group, formation, etc.) level equipment maintenance and support forces, combat group level equipment maintenance and support forces, theater / operational level equipment maintenance and support forces, and strategic level equipment maintenance and support forces. The equipment maintenance and support forces are divided into four levels, and the number of personnel allocated to each level is set as follows:

[0039] (2)

[0040]

[0041] Where x is a positive integer.

[0042] Then, the number of basic repair units (nj) for equipment maintenance and support forces at all levels is determined. The basic repair unit is the smallest unit within which equipment maintenance and support forces perform repair activities.

[0043] The number of basic repair units for equipment maintenance and support forces at all levels is as follows: ( j =1,2,3,4,…, n (3) in: x It is a positive integer; c j For the first j The minimum number of basic repair units required for the maintenance and support of advanced equipment. d j For the first jThe upper limit of the number of basic repair units in the maintenance and support force for class-level equipment; according to the military logic of the unit size of maintenance and support forces increasing step by step from tactical to strategic, the higher the level (tactical level → strategic level). c j , d j The values ​​generally show an increasing trend.

[0044] Specifically, taking the example of maintenance and support for land-based combat equipment, the number of basic repair units for maintenance and support forces at all levels is nj (j=1,2,3,4):

[0045] (4)

[0046]

[0047] Where x is a positive integer.

[0048] S2 models the maintenance capabilities of equipment maintenance and support forces.

[0049] Specifically, let the average repair capacity of the j-th level equipment maintenance and support force on day d be used as... for (5) in, To ensure the availability of equipment maintenance and support capabilities; To improve the availability of the jth equipment maintenance and support force; The working hours of the j-level equipment maintenance and support force in the designated area; The number of personnel in the basic repair unit within the j-th level equipment maintenance and support force; The utilization coefficient of repair work time for equipment maintenance and support forces. The utilization coefficient of repair work time for the j-th level equipment maintenance and support force; The technical level coefficient of the equipment maintenance and support personnel. The technical quantity coefficient of repair personnel in the j-th level equipment maintenance and support force; The duration of the repair cycle for equipment maintenance and support forces. The duration of the repair cycle for the j-th level equipment maintenance and support force; The average maintenance workload for each piece of equipment repaired by the j-th level equipment maintenance and support force.

[0050] S3 models the repair tasks of the maintenance support system.

[0051] Specifically, repair task modeling includes repair task inputs and repair task outputs. This step calculates the total number of repair task inputs, the number of repair tasks entering each level of equipment maintenance support, and the total number of repair task outputs.

[0052] The total number of repair task inputs represents the total number of damaged equipment entering the maintenance support system each day, including both equipment with technical malfunctions and equipment damaged in combat. The total number of repair task outputs represents the number of equipment repaired by the maintenance support system during combat operations.

[0053] (1) Calculate the repair task input Repair task input refers to the total number of damaged equipment entering the maintenance support system each day during combat operations, including equipment with technical malfunctions and equipment damaged in battle. The calculation of the number of repair tasks entering each level of equipment maintenance support force includes: assuming the repair task input on day d of the operation is... (6) in, The number of repair tasks performed by the j-th level equipment maintenance and support force on day d of the operation is represented as follows: (7) in, This is the initial value for the number of equipment participating in the battle on day d of the operation; The equipment loss rate on day d of the operation; For the combat mission depth on the dth day of the operation; For mobility coefficient, The mobility coefficient of the equipment; The average fault strength, The average failure strength of the equipment; This represents the conditional probability of a major overhaul. The conditional probability that battle-damaged equipment requires major repair; The conditional probability of being unrepairable (battle-damaged and unusable). The conditional probability that a battle-damaged piece of equipment is unrepairable (battle-damaged and scrapped); The probability that equipment damaged due to technical failure will be entered into the j-th level equipment maintenance and support force; This refers to the probability of entering the j-th level equipment maintenance and support force due to combat damage.

[0054] (2) Calculate the output of the repair task Specifically, repair mission output refers to the number of pieces of equipment repaired by the maintenance and support system during combat. The repaired equipment will then be redeployed into combat. The total repair mission output is calculated as follows: Let's assume it's day d of combat, and the number of pieces of equipment repaired by the j-th level maintenance and support force. for: (8) in, The number of repair tasks performed by the j-level equipment maintenance and support force on day d of the operation. On day d of the operation, the average repair capability of the j-level equipment maintenance and support force.

[0055] It should be noted that formulas (5) to (8) constitute the analytical model of the wartime equipment maintenance and support system, reflecting the dynamic functional process of the wartime equipment maintenance and support system.

[0056] S4 abstracts and refines the maintenance activities involved in wartime equipment repair activities, resulting in multiple equipment maintenance simulation events based on discrete events, including: battle damage assessment simulation, wartime rescue simulation, wartime emergency repair simulation, and repair completion and relocation simulation; it performs simulation function calculation on the function and operation mechanism of each equipment maintenance simulation event, and outputs the battle damage assessment results.

[0057] The following sections will elaborate on the simulations of battle damage assessment, wartime rescue, wartime repair, and reconstruction.

[0058] 1. Battle damage assessment simulation Specifically, battle damage assessment mainly involves methods for assessing damage to relevant weapons and equipment. It is a technical activity that judges and evaluates the extent, location, impact, and hazards of damage to weapons and equipment on the battlefield, whether battlefield repairs are needed, the required maintenance resources, and repair methods and means. In summary, battle damage assessment primarily involves qualitative and quantitative judgments of the battle damage situation of weapons and equipment, obtaining predicted values ​​for i and j.

[0059] (1) Qualitative assessment of battle damage Specifically, qualitative assessments of weapon and equipment damage are conducted, including setting multiple damage levels for the extent of damage to weapons and equipment on the battlefield.

[0060] In this invention, the value of i represents the battle damage level of weapons and equipment on the battlefield, and the range of values ​​for i is set to {1,2,3,4,5,6}, as shown in Table 1: Table 1. Weapon and Equipment Battle Damage Qualitative Assessment Level Table

[0061] (2) Quantitative assessment of battle damage Specifically, qualitative assessments of weapon and equipment damage are conducted, including setting multiple damage levels for equipment maintenance and support forces.

[0062] The value range of j is set to {1, 2, 3, 4}. The value of j represents the level of equipment maintenance and support capability, and is represented in ascending order of value, as shown in Table 2 below: Table 2. Wartime Equipment Maintenance and Support Force Levels

[0063] (3) Battle damage assessment simulation The time required to assess equipment repair work depends primarily on the assessor's experience and technical skill, the available testing tools and equipment, and the testability of the damaged equipment itself. express: (9) in, This represents the evaluator's skill level coefficient. Applicability coefficient of testing tools Equipment testability coefficient.

[0064] Wartime assessments typically require swift decision-making and do not take long. To simplify calculations, this invention combines the assessment time with the time spent on reporting and organizing, setting it to a constant value. For example, referencing experience from grassroots live-fire exercises, it is usually set to " "minute.

[0065] like Figure 3 As shown, based on the current battlefield equipment and the extent of combat damage, a combat damage level is set for the degree of damage to weapons and equipment on the battlefield; If the combat damage level of weapons and equipment is level 1 or 2, then rescue operations should be carried out, followed by repair and restoration. If the combat damage level of weapons and equipment is level 3, emergency operations will be carried out, and it will be determined whether to continue the emergency. Otherwise, the combat damage level of the equipment maintenance and support forces will be classified according to the combat damage level, and the corresponding level of rescue will be carried out. If the damage level of weapons and equipment is level 4 or 5, the damage level of the equipment maintenance and support force shall be classified according to the damage level, and the corresponding level of rescue shall be carried out. If the damage level of weapons and equipment is 6, then exit the battle; If the combat damage level of the equipment maintenance and support force is Level 1, then determine whether the brigade-level equipment maintenance and support force is available. If so, the brigade will provide emergency repair support; otherwise, determine whether the combat group-level equipment maintenance and support force is available. If the combat damage level of the equipment maintenance and support force is level 2, then determine whether the equipment maintenance and support force of the combat group is available; if so, the equipment maintenance and support force of the combat group will provide support for emergency repairs; otherwise, determine whether the equipment maintenance and support force of the theater or campaign is available. If the battle damage level of the equipment maintenance and support force is level 3, then determine whether the equipment maintenance and support force of the theater is available; if so, the equipment maintenance and support force of the theater will provide support for emergency repairs. If the combat damage level of the equipment maintenance and support force is level 4, then it will be transferred to the strategic equipment maintenance and support force.

[0066] After completing the emergency repairs, the equipment was put back into service.

[0067] 2. Wartime rescue simulation For battlefield rescue operations, taking land-based combat tanks as an example, the rescue process typically involves self-rescue, towing, and evacuation. The order of rescue follows the principle of prioritizing primary directions over secondary directions, command and combat equipment over other equipment, and easily salvaged equipment over difficult-to-save equipment. Under equal conditions, the principle of proximity and convenience should be followed, with emphasis on speed.

[0068] Figure 2 It illustrates the unified wartime equipment repair operations and the classification relationship between battlefield rescue and battlefield repair. Figure 3 It demonstrates the unified wartime equipment repair operations and the relevant battlefield rescue and repair procedures.

[0069] like Figure 2 As shown, the degree of siltation of battle-damaged equipment is categorized as: light siltation, medium siltation, heavy siltation, and extremely heavy siltation. Rescue efforts include freeing the equipment from siltation and relocation. Freeing the equipment from siltation includes: mutual rescue, self-rescue, and towing rescue. Relocation is categorized by method as: delivery relocation and retrieval relocation; and by technique as: towing and transport.

[0070] (1) Self-rescue and dragging rescue Simulations were conducted on self-rescue and towed rescue scenarios in battlefield rescue. Under both self-rescue and towed rescue conditions, the theoretical escape time LTj follows a certain order. The distribution is generated from battle damage simulation. The actual rescue and breakaway time STj is generated based on the same principle and maintenance assessment method, i.e. .

[0071] (2) Submission Simulations were performed on the evacuation of equipment during battlefield rescue operations, including: calculating the time Tj for the rescue team to move forward to the location of the damaged equipment and the time Th for towing the damaged equipment from the location of the damage to the corresponding equipment maintenance and support force.

[0072] Specifically, the evacuation process includes two parts: the advance maneuver of the recovery team to the damaged equipment's location, and the towing of the damaged equipment from the location to the appropriate equipment repair and support force. The time taken for these two parts is generally represented by Tj and Th, respectively. The only difference between the two lies in the movement speed of the recovery vehicle when unloaded and loaded; therefore, the mathematical expressions are the same. Taking land-based combat tank equipment as an example, empirical statistics show that the average movement speed of an unloaded armored recovery vehicle is typically... The average speed under load is When calculating the feed-back time, two methods can be used, namely approximate simulation and stochastic simulation, depending on the required simulation accuracy.

[0073] 2.1) Rough Simulation (10) (11) Where St is the map distance between the starting point and the target; c is the terrain correction coefficient, which can be obtained by referring to relevant knowledge of military topography based on the specific terrain conditions. St(1+c) is used to approximate the actual distance between the starting point and the target.

[0074] 2.2) Random Simulation (12) Where St is the map distance between the starting point and the target; c is the terrain correction coefficient, which can be obtained by referring to the relevant knowledge of military topography according to the specific terrain conditions. St(1+c) is used to approximate the actual distance between the starting point and the target. v(t) is a continuous variable of the speed of the rescue vehicle with respect to time t. During simulation, it is not calculated. For convenience, equation (11) can be discretized.

[0075] (13) (14) Where v(i) is a random array with a mean equal to or When St(1+c) is constant, Tj and Th can be solved using numerical calculation methods. Therefore, the repair time required for each damaged piece of equipment can be calculated individually.

[0076] In the case of evacuation, the rescue time is actually the time required for a tractor-trailer to move the damaged equipment from the damaged area to the appropriate level of equipment maintenance and support force. When j=1, the brigade (group, formation, etc.) level equipment maintenance and support force is responsible for repair, and on-site repair is adopted, STj=0. When i=2, the condition for evacuating the damaged equipment is that the equipment integrity rate P of its unit is ≥95%.

[0077] 3. Wartime emergency repair simulation, including: simulating the repair time and simulating the actual repair work.

[0078] Specifically, battlefield repair refers to the restoration of damaged equipment. In wartime, it means using effective maintenance resources (personnel, equipment, materials, etc.) and unconventional repair methods to restore damaged equipment to a certain level of capability to perform its mission.

[0079] In wartime, the repair of land combat equipment is typically categorized into three levels—major repair, medium repair, and minor repair—based on the extent of damage and natural wear and tear. The order of battlefield repair follows the same principle as battlefield rescue: prioritizing primary directions over secondary directions, command and combat equipment before other equipment, and easily salvaged equipment before difficult-to-save equipment. Under equal conditions, the principle of proximity and convenience is applied, emphasizing speed. The relationship between the classifications of battlefield rescue and battlefield repair is as follows: Figure 2 As shown, the battlefield rescue and repair workflow is as follows: Figure 3 As shown.

[0080] like Figure 2 As shown, battlefield damage is classified according to severity as: minor damage, moderate damage, severe damage, and total loss.

[0081] Battlefield damage is classified into the following types: combat damage, random failure, wear and tear failure, human error, accidents, support system failure, and equipment incompatibility.

[0082] Battlefield damage assessment and repair are categorized by method as follows: mobile repair, battlefield repair, on-site repair, rear repair, and evacuation repair. On-site repair includes: position repair, accompanying repair, patrol repair, and fixed-point repair. Evacuation repair includes: unit repair and factory repair.

[0083] Battlefield damage assessment and repair are categorized by method into: component replacement repair, disassembly and reassembly repair, original component repair, and emergency repair. Disassembly and reassembly repair includes: same-type reassembly, different-type reassembly, and self-reassembly. Emergency repair includes: reconfiguration, replacement, and temporary deployment.

[0084] (1) Emergency repair time simulation The repair time mainly includes the waiting time for repair and the time for repair implementation.

[0085] In this invention, the main reasons for waiting for repair include: insufficient repair capabilities of equipment maintenance and support personnel or insufficient repair equipment.

[0086] (1.1) Waiting for repair due to insufficient repair capacity of equipment maintenance and support forces. Let Nmax be the maximum number of type X equipment that a certain equipment maintenance and support force can repair simultaneously, and m be the current number of type X equipment under repair. Then the remaining repair capacity of the repair organization is S = Nmax - m. Let W be the number of equipment waiting for repair. If m≤Nmax, then repair immediately, and m=m+1, W=W-1, S=S-1; If m ≥ Nmax, then wait for repair, and W = W + 1.

[0087] (1.2) If the waiting time for repair is due to insufficient maintenance equipment, and if m≤Nmax, then first check whether the maintenance equipment of the current equipment maintenance support force meets the repair task. Let Qc be the reserve of maintenance equipment of the equipment maintenance support force, and Qd be the current demand of the equipment for this type of maintenance equipment. If Qc-Qd≥0, then repair begins and the repair timer is started.

[0088] If Qc-Qd≤0, the equipment is waiting for repair, the equipment replenishment timer starts counting, and when the equipment replenishment timer reaches the specified time, the number of equipment to be repaired in the equipment warehouse is increased by the number of replenished equipment, the repair waiting ends, and the repair work starts counting.

[0089] (2) Repair implementation simulation Based on the wartime equipment repair principles, the repair process is simulated, including: if multiple pieces of equipment are waiting for repair at the same time, the equipment with the shortest repair time will be repaired first. If the equipment has not been repaired in the current simulation step, the next simulation step will continue to carry out the repair activity of that equipment until it is repaired.

[0090] During the simulated repair process, there was a certain deviation between the actual repair time and the theoretical repair time. The reason for this is the same as the error in battle damage assessment, primarily depending on the experience and technical level of the repair personnel, the availability of repair equipment, and the fulfillment rate of repair materials, as well as the actual repair time. for: (15) in, ; ; .

[0091] Therefore, the same approach as for handling battle damage assessment errors can be used, i.e. ,in, The value is empirically determined by using " ".

[0092] 4. Simulation of reconstruction upon completion Repaired equipment needs to be immediately returned to its original unit. Although the repaired equipment functionally meets wartime requirements, it is not yet counted towards the unit's readiness rate. Only when it returns to its original unit is it considered fully out of the repair phase. The return-to-base time is... express: (16) in, St(1+c) represents the actual distance between the starting point and the target location; c is the terrain correction coefficient, which can be obtained by referring to relevant knowledge of military topography based on the specific terrain conditions. The actual distance between the starting point and the target location can be approximated by St(1+c).

[0093] The following sections explain the maintenance simulation operation for single-rescue teams and the maintenance simulation operation for brigade-level equipment, respectively. 1. Single emergency repair team maintenance simulation operation Emergency repair teams are the basic units supporting wartime equipment repair activities. The maintenance operation simulation of a single emergency repair team is the foundation of the entire wartime equipment maintenance and support simulation. The maintenance simulation operation process of a single emergency repair team is as follows: Figure 4 As shown.

[0094] like Figure 4 As shown, let Ai be the time interval for the arrival of damaged equipment. Determine if the repair team is idle. If so, start repairs and complete the repairs. If the repair team is not idle, wait in line.

[0095] Specifically, let Ai = ti - ti-1 be the interval between the arrival of the (i-1)th and the ith damaged equipment; Si = the repair time for the repair crew to repair the i-th piece of damaged equipment; Di = the time the i-th damaged piece of equipment is waiting to be repaired; Ci = ti + Di + Si represents the time when the i-th damaged piece of equipment is repaired. ti = the time when the i-th damaged piece of equipment arrives at the simulation event; bi = the time when the i-th piece of equipment is damaged in battle; qi = queue length when the i-th damaged piece of equipment arrives; Zi = the status of the repair team when the i-th damaged piece of equipment arrives, where Zi = 1 indicates a busy status and Zi = 0 indicates an idle status.

[0096] Then, define the discrete event types of the system: Type 1 is the arrival event of damaged equipment; Type 2 is the repair event of damaged equipment; and Type 3 is the completion event of repair of damaged equipment.

[0097] Finally, the simulation operation process and program are defined, and the simulation system is set to end after the 150th time unit (minute).

[0098] Where Ai and Si are random variables in the simulation process, generated according to their distribution functions. For ease of understanding, it is assumed that the sample values ​​of the random variables Ai and Si have been obtained as A={15, 32, 24, 40, 22, …} and S={43, 36, 34, 28, …}. At the same time, the initial state of the system is: qi=0, Zi=0. The simulated maintenance events of the single emergency repair group are shown in Table 3 below: Table 3 Simulation Maintenance Schedule for Single Emergency Repair Team

[0099] In summary, the single-equipment emergency repair team simulation operation adopts a unified time advancement mechanism and conducts deductions step by step according to the step size of the simulation clock. The process is as follows: The initial value of the simulation clock is TIME = b0 = t0.

[0100] At the moment of TIME = t0, the next event is the arrival of the first damaged equipment, and the occurrence time is b1, that is, t1 = b1, and t1 - t0 + A1 = 15. Since the simulation system runs until the 150th time unit (minute), when the simulation clock advances to t1, the event of the arrival of the first damaged equipment is triggered. At this time, Z0 = 0 (the repair team is idle), and the repair activity for the first damaged equipment can be immediately implemented, that is, D1 = 0 (the weapon of the first damaged equipment does not need to wait). Also, according to the sample value of the Si random variable, it can be known that the repair time of the first damaged equipment is S1 = 43, so its repair completion time is C1 = t1 + D1 + S1 = 15 + 0 + 53 = 58.

[0101] At this time, the status of the repair team has changed from Z0 = 0 (the repair team is idle) to Z1 = 1 (the repair team is busy). Since t2 = t1 + A2 = 15 + 32 = 47 < C1 (the time when the second damaged equipment arrives at the simulation event = the time when the first damaged equipment arrives at the simulation event + the interval time between the arrivals of two adjacent damaged equipment), it can be known that b2 = t2 = 47 (the time when the second equipment suffers a damage event = the time when the second damaged equipment arrives at the simulation event).

[0102] When the simulation clock advances to t2 = 47, the event of the arrival of the second damaged equipment is processed. Since Z1 = 1 (the repair team is busy), the second damaged equipment queues up to wait for repair first. The start waiting time is t2, and the waiting repair queue length is calculated as q2 = q1 + 1 = 1.

[0103] Continue the simulation operation. The next earliest simulation event is the repair completion event of the first damaged equipment. Since the occurrence time of the next equipment arrival event is t3 = t2 + A2 = 47 + 24 = 71 > C1, it can be known that b3 = C1 = 58.

[0104] When the simulation clock advances to C1=58, the repair completion event for the first damaged equipment needs to be processed. This includes counting the number of repair team members, equipment availability, releasing the busy status of the repair team (changing Z1=1 to Z2=0), and observing whether there is any damaged equipment waiting for repair in the queue. Currently, since the waiting repair team leader q2=1 and the repair team status is idle Z2=0, the repair activity for the second damaged equipment should be initiated immediately. At the same time, the waiting time for the second damaged equipment to be repaired needs to be calculated as D2=C1-t2=58-47=11, the equipment repair time is calculated as S2=36, the waiting repair team leader q3=q2-1=0 is updated, and the repair completion time for the second equipment is calculated as C2=C1+S2=58+36=94.

[0105] Figure 5 The simulation process of a single emergency repair team maintenance event is shown. The simulation continues, and since the next simulation event should be the arrival of the 3rd damaged piece of equipment, the simulation clock advances to b4=t3=71, ... and so on, in a loop until the last simulation end event.

[0106] 2. Simulation operation of brigade-level equipment maintenance Brigade-level refers to land-based combined arms brigades and combat formations, a crucial link in military organization. In wartime equipment maintenance and support, brigade-level equipment maintenance encompasses both on-site emergency repair and centralized, fixed-point repair operations. Equipment maintenance and support forces at the brigade level and above, as well as those in theater-level campaigns, can be approximated using the same methods as brigade-level equipment maintenance and support forces. Therefore, by simulating brigade-level equipment maintenance, simulations of other equipment maintenance organizations at various levels can be analyzed and deduced using the same logic and process.

[0107] The brigade-level equipment maintenance simulation operation, based on the aforementioned single-repair team maintenance simulation operation logic, further introduces simulations of both on-site and fixed-point maintenance operation methods. This allows for further analysis of the maintenance operation methods, which can be divided into four main stages: battle damage occurrence, accompanying repair, fixed-point repair, and repair completion and return to base. These stages are then linked together using a simulation process. The brigade-level equipment maintenance workflow is as follows: Figure 6 As shown.

[0108] like Figure 6As shown, when battle damage occurs, the battle damage assessment is determined to be less than or equal to 1 (battle damage assessment ≤ 1). Based on the degree of damage, deployment location, mission requirements, and maintenance support conditions, either accompanying repair or designated repair is selected. These are parallel maintenance paths for the same equipment, implemented separately. Accompanying repair is suitable for equipment damaged in forward positions, with minor damage, and requiring rapid restoration of combat effectiveness while moving with the unit. The specific implementation process involves first dispatching a rescue and repair team; then conducting on-site rescue and repair; and finally returning the equipment to its original location after repair. Designated repair is suitable for equipment that cannot be quickly repaired and requires reliance on rear maintenance resources. The specific implementation process involves first dispatching a rescue team; then evacuating the equipment for rescue, and designating a repair team for rear repair.

[0109] During the brigade-level equipment maintenance simulation operation, two counters need to be set up, including the equipment queue N waiting for repair and the standby repair team queue M. When the damaged equipment enters the maintenance stage, the number of equipment in the equipment queue N = N + 1, and the number of standby repair teams M = M - 1; when the damaged equipment is repaired and returned to its original location, the number of equipment in the equipment queue N = N - 1, and the number of standby repair teams M = M + 1.

[0110] (1) Simulation Input Since this invention primarily focuses on wartime equipment maintenance, the battle damage calculation process is omitted here; the battle damage results are directly output to support wartime equipment maintenance simulation. Assume that on [Date], an army combined arms brigade organizes a joint operation involving [Number] tanks in a battlefield environment with a frontal width of 60 km, a total extension of 80 km, moderately undulating terrain, and good visibility. The combat program is a three-on-three system, involving a total of 170 Type X tanks.

[0111] (2) Equipment availability simulation At time X, the enemy launched an attack, and the battle lasted for 8 hours. The results showed that after 5 hours of fighting, 51 X-type tanks were lost, and the equipment availability rate was at its lowest point of 70%. After 7 hours of fighting, the equipment repair work of the brigade-level equipment repair organization was completed, and the equipment availability rate was increased to over 85%, enabling it to fight again. Figure 7 The simulation results of equipment availability are shown.

[0112] (3) Equipment Repair Rate Simulation Through simulation, after the battle began, the brigade-level equipment repair organization immediately organized and operated. Within about 7 hours, the repaired X-type tanks returned to the battlefield. By the end of the battle, a total of 26 X-type tanks had been repaired, increasing the equipment availability rate to 85%. Figure 8 The simulation results of equipment repair rate changes are shown.

[0113] (4) Simulation of equipment repair mechanism utilization rate The utilization rate of the repair facility mainly refers to the ratio of the number of repair teams engaged in maintenance work to the total number of repair teams. Within 8 hours after the start of the operation, the repair facility was basically operating at full capacity. Based on the simulation results and the magnified utilization rate curve of the repair facility, the utilization rate of the repair facility basically fluctuated between 90% and 100%. Figure 9 The simulation results of the repair facility utilization rate are shown.

[0114] This invention further incorporates equipment maintenance materials, a key component of equipment maintenance, expanding the breadth of wartime equipment maintenance simulation and enhancing the dimensions of wartime equipment maintenance support analysis. During the simulation process, this invention can construct simulation models for scenarios involving the storage and supply of equipment maintenance materials: on the one hand, it can simulate the conditions for project initiation and support with sufficient stockpiled materials and reliable supply, used to verify the maximum efficiency and optimal solution of wartime equipment maintenance; on the other hand, by introducing actual constraint parameters such as material support pressure, transport equipment guidance dependence, mountainous environment, enemy attacks, and roadblock interference, it can construct a material supply simulation model close to actual combat, achieving a realistic simulation of the equipment maintenance material support capability in complex battlefield environments, and providing more comprehensive technical support for the optimized allocation of equipment maintenance resources and the scientific verification of support plans.

[0115] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0116] It will be readily understood by those skilled in the art that this invention includes any combination of the inventive description and specific embodiments outlined in the foregoing specification, as well as the various parts shown in the accompanying drawings. Due to space limitations and for the sake of brevity, not all of these combinations have been described in detail. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

[0117] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wartime equipment maintenance simulation method based on discrete events, characterized in that, include: S1, to simulate and model the wartime maintenance support system, including: according to the wartime equipment maintenance support system, dividing the equipment maintenance support force into level j, and determining the number of equipment maintenance support forces at each level and the number of basic repair units in each level of equipment maintenance support force; S2 models the maintenance capability of equipment maintenance support forces, where the average repair capability of the j-th level equipment maintenance support force on day d is denoted by . for in, To ensure the availability of equipment maintenance and support capabilities; To improve the availability of the jth equipment maintenance and support force; The working hours of the j-level equipment maintenance and support force in the designated area; The number of personnel in the basic repair unit within the j-th level equipment maintenance and support force; The utilization coefficient of repair work time for equipment maintenance and support forces. The utilization coefficient of repair work time for the j-th level equipment maintenance and support force; The technical level coefficient of the equipment maintenance and support personnel. The technical quantity coefficient of repair personnel in the j-th level equipment maintenance and support force; The duration of the repair cycle for equipment maintenance and support forces. The duration of the repair cycle for the j-th level equipment maintenance and support force; The average maintenance workload for each piece of equipment repaired by the j-th level equipment maintenance and support force; S3, Modeling the repair tasks of the maintenance support system, including: calculating the total number of repair task inputs, the number of repair tasks entering each level of equipment maintenance support force, and the total number of repair task outputs; wherein, the total number of repair task inputs is the total number of damaged equipment entering the maintenance support system each day, and the total number of damaged equipment includes the number of equipment with technical malfunctions and the number of equipment damaged in battle; the total number of repair task outputs is the number of equipment repaired by the maintenance support system during combat. S4 abstracts and refines the maintenance activities involved in wartime equipment repair activities, resulting in multiple equipment maintenance simulation events based on discrete events, including: battle damage assessment simulation, wartime rescue simulation, wartime emergency repair simulation, and repair completion and relocation simulation. The function and operation mechanism of each of the equipment maintenance simulation events are solved by simulation functions, and the battle damage assessment results are output.

2. The wartime equipment maintenance simulation method based on discrete events according to claim 1, characterized in that, In S1, based on relevant military standards, the equipment maintenance and support levels are structurally arranged as follows: strategic-level equipment maintenance and support forces, operational-level theater-level equipment maintenance and support forces, combat group-level tactical-level equipment maintenance and support forces, and tactical-level unit / group equipment maintenance and support forces, etc. Each level of equipment maintenance and support force is represented by Bj, where j = 1, 2, 3, 4, ... n The number of maintenance and support personnel allocated to each level of equipment is set as follows: in, j =1,2,3,4,…, n; x It is a positive integer; a j For the first j The lower limit of the number of maintenance and support personnel for advanced equipment. b j For the first j The upper limit for the number of maintenance and support forces for advanced equipment; following the military logic of progressively increasing the number of maintenance and support forces from strategic to tactical levels, the higher the strategic level, the greater the capacity. a j , b j The higher the value, the later the tactical level. a j , b j The smaller the value.

3. The wartime equipment maintenance simulation method based on discrete events according to claim 2, characterized in that, In S1, the number of basic repair units for equipment maintenance and support forces at all levels is as follows: ( j =1,2,3,4,…, n ) in: x It is a positive integer; c j For the first j The minimum number of basic repair units required for the maintenance and support of advanced equipment. d j For the first j The upper limit of the number of basic repair units in the equipment maintenance and support force; following the military logic of progressively increasing unit size from tactical to strategic levels, the higher the level, the more it is adjusted from tactical to strategic. c j , d j The values ​​generally show an increasing trend.

4. The wartime equipment maintenance simulation method based on discrete events according to claim 1, characterized in that, In S3, the calculation of the number of repair tasks entering each level of equipment maintenance support force includes: assuming the repair task input for day d of the operation is... On day d of the operation, the number of repair tasks performed by the level j equipment maintenance and support force, among which... in, This is the initial value for the number of equipment participating in the battle on day d of the operation; The equipment loss rate on day d of the operation; For the combat mission depth on the dth day of the operation; For mobility coefficient, The mobility coefficient of the equipment; The average fault strength, The average failure strength of the equipment; This represents the conditional probability of a major overhaul. The conditional probability that battle-damaged equipment requires major repair; Let be the conditional probability that is unrepairable. The conditional probability that a battle-damaged piece of equipment is unrepairable; The probability that equipment damaged due to technical failure will be entered into the j-th level equipment maintenance and support force; This refers to the probability of entering the j-th level equipment maintenance and support force due to combat damage.

5. The wartime equipment maintenance simulation method based on discrete events according to claim 1, characterized in that, In S3, the total output of repair tasks is calculated, including: on day d of the operation, the number of repairs by the j-th level equipment maintenance support force. for: in, The number of repair tasks performed by the j-level equipment maintenance and support force on day d of the operation. On day d of the operation, the average repair capability of the j-level equipment maintenance and support force.

6. The wartime equipment maintenance simulation method based on discrete events according to claim 1, characterized in that, In S4, the battle damage assessment simulation includes: Qualitative assessment of weapon and equipment damage includes setting multiple damage levels for the degree of damage to weapons and equipment on the battlefield. Qualitative assessment of weapon and equipment damage includes setting multiple damage levels for equipment maintenance and support forces. Time spent on equipment repair work An assessment was conducted, in which in, This represents the evaluator's skill level coefficient. Applicability coefficient of testing tools Equipment testability coefficient.

7. The wartime equipment maintenance simulation method based on discrete events according to claim 6, characterized in that, Based on the current battlefield equipment and combat damage situation, set combat damage levels for the degree of combat damage to weapons and equipment on the battlefield; If the combat damage level of weapons and equipment is level 1 or 2, then rescue operations should be carried out, followed by repair and restoration. If the combat damage level of weapons and equipment is level 3, emergency operations will be carried out, and it will be determined whether to continue the emergency. Otherwise, the combat damage level of the equipment maintenance and support forces will be classified according to the combat damage level, and the corresponding level of rescue will be carried out. If the damage level of weapons and equipment is level 4 or 5, the damage level of the equipment maintenance and support force shall be classified according to the damage level, and the corresponding level of rescue shall be carried out. If the damage level of your weapons and equipment is 6, then exit the battle. If the combat damage level of the equipment maintenance and support force is Level 1, then determine whether the brigade-level equipment maintenance and support force is available. If so, the brigade will provide emergency repair support; otherwise, determine whether the combat group-level equipment maintenance and support force is available. If the combat damage level of the equipment maintenance and support force is level 2, then determine whether the equipment maintenance and support force of the combat group is available; if so, the equipment maintenance and support force of the combat group will provide support for emergency repairs; otherwise, determine whether the equipment maintenance and support force of the theater or campaign is available. If the battle damage level of the equipment maintenance and support force is level 3, then determine whether the equipment maintenance and support force of the theater is available; if so, the equipment maintenance and support force of the theater will provide support for emergency repairs. If the combat damage level of the equipment maintenance and support force is level 4, then it will be transferred to the strategic equipment maintenance and support force.

8. The wartime equipment maintenance simulation method based on discrete events according to claim 1, characterized in that, In S4, the wartime rescue simulation includes: The simulation of self-rescue and towed rescue scenarios in battlefield recovery is conducted. The theoretical rescue time LTj is generated by the battle damage assessment simulation, while the actual rescue time STj follows the distribution below. ; Simulations were performed on the evacuation of equipment during battlefield rescue operations, including: calculating the time Tj for the rescue team to move forward to the location of the damaged equipment and the time Th for towing the damaged equipment from the location of the damage to the corresponding equipment maintenance and support force.

9. The wartime equipment maintenance simulation method based on discrete events according to claim 1, characterized in that, In S4, the wartime emergency repair simulation includes: simulating the repair time and simulating the implementation of repairs; The simulation of repair implementation includes: if multiple pieces of equipment are waiting for repair simultaneously, the equipment with the shortest repair time will be repaired first; if the equipment is not repaired in the current simulation step, the repair activity for that equipment will continue in the next simulation step until it is repaired; the repair time... for: in, The technical skill level coefficient of the repair personnel. To ensure the completeness of maintenance equipment, To ensure the satisfaction rate of repair equipment.

10. The wartime equipment maintenance simulation method based on discrete events according to claim 1, characterized in that, In S4, the simulation of repair and reconstruction includes: setting the reconstruction time using... express: in, Indicates the actual distance between the starting point and the destination; c is the terrain correction factor; V g The speed at which the vehicle returns to its starting point.

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