Maintenance force marshalling scheduling method based on minimum manpower unit

Abstract

The invention discloses a maintenance force marshalling scheduling method based on a minimum manpower unit, and relates to the technical field of vehicle maintenance guarantee, and the method specifically comprises the steps: constructing a total maintenance force set; constructing a minimum manpower unit based on a minimum demand state, and forming an expert strength set, a backbone strength set and a green hand strength set; establishing a maintenance task feature model; determining a maintenance strength marshalling scheduling principle; an objective function and constraint conditions of the optimal maintenance force marshalling scheduling based on the minimum manpower unit are constructed, and a maintenance force optimized marshalling scheduling model is generated; according to the method, a reasonable, optimized and efficient marshalling scheduling method can be provided for the maintenance force of a vehicle maintenance mechanism when the vehicle maintenance mechanism faces multiple maintenance tasks at the same time, and particularly when the tasks are saturated, the method can maximize the effectiveness of the maintenance force. The method provided by the invention can provide effective theoretical support and technical support for dispatching, applying, cultivating and constructing the maintenance force of the vehicle maintenance mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle maintenance and support, and in particular to a maintenance force grouping and scheduling method based on a minimum manpower unit. Background Art

[0002] Regardless of whether the vehicle maintenance organization is performing maintenance at a standard site within the organization's headquarters or at a temporary site in a field environment, it is necessary to group and allocate maintenance forces according to the tasks, and try to make the grouping and allocation plan reasonable and feasible, so that more maintenance tasks can be completed faster when the maintenance force is limited.

[0003] At present, the deployment of maintenance forces in vehicle maintenance organizations is usually differentiated by profession. Based on the two major categories of chassis and body, it is mainly subdivided into five majors: chassis, machining, control, electrical, and communication. Some majors also have to undertake the work tasks of small majors such as driving, optoelectronics, and surface treatment. That is, technicians in some majors need to have multi-skilled maintenance capabilities. The professional differentiation of maintenance forces provides a basis for the deployment of technical personnel in vehicle maintenance organizations, that is, within a vehicle maintenance organization, a basic maintenance department is usually composed of 1 to 2 majors. The setting of this maintenance department can easily complete the differentiation of vehicle maintenance tasks, and provides a good structural and style foundation for the detailed decomposition of maintenance tasks and the organization and scheduling of maintenance forces.

[0004] Vehicle maintenance organizations usually implement maintenance force grouping when receiving batch maintenance tasks. The current maintenance force grouping methods mainly include manual grouping methods based on expert experience and grouping methods based on maintenance man-hour measurement. The manual grouping method based on expert experience is mainly that after receiving the maintenance task, the maintenance technical person in charge of the vehicle maintenance organization or the maintenance technical guidance expert analyzes the basic conditions such as the source, type, quantity, difficulty and urgency of the task, and determines the order of task implementation based on the daily accumulated experience judgment. On this basis, the maintenance force required for each task is determined again based on experience, and the force grouping and scheduling are completed. This method is greatly affected by subjective factors, and when the maintenance tasks are numerous and urgent, the real-time performance of grouping and scheduling is difficult to guarantee. The grouping method based on maintenance man-hour measurement is that the maintenance business management personnel or the maintenance technical guidance experts analyze the tasks and determine the order of task implementation, and then determine the maintenance force required for the task based on the maintenance man-hours of each professional task and the maintenance time limit required by the task, and complete the force grouping and scheduling. This method requires precise determination of the maintenance time for the task, but some vehicle technical document standards do not fully define the maintenance time, or the maintenance time cannot be effectively determined for some vehicle failures, rescue and repair situations, etc., so the accuracy of this method is sometimes difficult to guarantee.

[0005] At present, there is no reasonable, feasible and practical scheduling method. As the workload of vehicle maintenance organizations in base maintenance, fixed-point support and emergency rescue support increases year by year, there is an urgent need for an effective scheduling method for maintenance force scheduling, which can provide methods and technical support for scheduling maintenance force and allocation of maintenance support resources for various tasks of vehicle maintenance organizations. Summary of the invention

[0006] The present invention provides a maintenance force grouping and scheduling method based on the minimum manpower unit, which solves the problem of vehicle maintenance force grouping and scheduling disclosed in the above background technology.

[0007] The present invention provides the following technical solution: a maintenance force grouping scheduling method based on the minimum manpower unit, comprising the following steps: Step 1: construct a collection of maintenance forces based on the characteristics of professional maintenance technicians in vehicle maintenance organizations; The specific process is: the maintenance force is divided into five majors: chassis, machining, control, electrical and communication, and the constructed set is: ; The maintenance forces are classified by profession: ; in: Gathering forces for maintenance, and Represents a collection of professional chassis maintenance personnel. and Represents a collection of professional machining maintenance personnel. and Represents a collection of control professional maintenance personnel, and Represents a collection of electrical professional maintenance personnel. and It represents a collection of maintenance personnel specialized in communications; and: ; in: The total number of maintenance personnel in the vehicle maintenance organization. Indicates the number of professional chassis maintenance personnel, Indicates the number of professional maintenance personnel for machining. Indicates controlling the number of professional maintenance personnel. Indicates the number of electrical professional maintenance personnel, Indicates the number of maintenance personnel specialized in communications; The maintenance force is divided into two categories: technicians and skilled personnel, and the constructed set is: ; Technical personnel can be divided into three levels according to their professional title and ability level, namely assistant engineer, engineer, and senior engineer; skilled personnel can be divided into five levels according to their professional skill appraisal and allocation level, namely junior, intermediate, senior, technician, and senior technician, namely: ; Maintenance forces are divided into levels: ; in, and represents a collection of assistant engineers and technicians, and Represents a collection of engineers and technicians, and It represents a collection of senior technicians and skilled personnel; and: ; in, Indicates the number of assistant engineer technicians, Indicates the number of engineers and technicians, Indicates the number of skilled personnel at the senior technician level; Considering the profession and level of maintenance force,

[0008] in, Indicates the total number of maintenance professions, Indicates the total number of repair force levels: Step 2: According to the maintenance task saturation, the minimum manpower unit based on the minimum demand state is constructed to form an expert force set, a backbone force set, and a novice force set with different attributes; The minimum human unit matrix constructed is: ; in: Represents the minimum human unit matrix; Represents the minimum manpower unit matrix under the non-saturated state of vehicle maintenance tasks; Represents the minimum manpower unit matrix under the saturation state of vehicle maintenance tasks; Step 3: Establish a maintenance task feature model based on the importance of the maintenance task, task location, task time limit, and task personnel requirements, and analyze the typical characteristics of each feature state of different types of tasks; Step 4: According to the mission importance / task priority, mission location and support resource utility, clarify the priority principle of maintenance force organization and scheduling, and form a logical model of the priority principle; The priority principles include: ①, based on the priority / importance of maintenance tasks; ②, based on ①, based on the advantages of maintenance task clusters; ③, based on ①, based on maximizing the utilization of maintenance support resources; Step 5: Based on the analysis of the above four steps, a mathematical model for the optimal maintenance force grouping and scheduling based on the minimum manpower unit is constructed, and the specific objective function and constraint conditions of the maintenance force optimization grouping and scheduling model are given; the established mathematical model is: ; in: , Indicates the number of maintenance tasks; It indicates the number of professional minimum manpower units used for the maintenance task; The constraints are: ① Maintenance task saturation constraint ; ②The person in charge of each professional maintenance is responsible for the constraints ; ; ③The number of professional personnel groups must not be less than the corresponding maintenance force demand constraints ; ④ Based on the priority / importance of maintenance tasks, there is a constraint on the order of importance of the maintenance tasks to be performed. ; in: Indicates the vehicle maintenance task saturation. When When , the maintenance task is saturated or oversaturated.

[0009] Preferably, in step 2: ; ; in: ; ; ; .

[0010] Preferably, the source of the vehicle maintenance task model is a task description text containing type requirement information. For vehicle maintenance tasks issued by middle and superior levels, the importance of the maintenance tasks, the location of the maintenance tasks, the maintenance time requirements and the maintenance force requirements (personnel profession and personnel level) are evaluated.

[0011] Preferably, mission importance is determined by the mission vehicle's criticality. , the importance of the vehicle to the system and maintenance task resource consumption The importance index value obtained by evaluation ,have: ; The maintenance task location refers to the coordinates of the maintenance task location , feasible maneuvering routes from vehicle maintenance organizations to mission locations and information on the distance of each motorway route ,have: ; in: ; ; ; Maintenance time requirements include maintenance force preparation time, force mobility transfer time, and maintenance implementation time, including: ;in: ; The number of professionals required is: ; in: Indicates the minimum number of maintenance personnel required for chassis specialties. Indicates the minimum number of chassis professional maintenance personnel required for the task, Indicates selection based on vehicle maintenance task saturation or A certain value in the list; and it is necessary to ensure that each profession has at least one professional and technical backbone personnel or above; ; ; ;in: ; .

[0012] Preferably, the criticality of the mission vehicle is determined by looking up the established vehicle model type criticality table Tbl.Type, and can also be determined by referring to the reference vehicle model type repair equivalent comparison table Tbl.Eqvl; the importance of the vehicle to the system is determined by the system contribution rate, and the system contribution rate is obtained by comprehensively calculating the contribution ratio of the vehicle to the system's decision-making De, mobility Mo, reconnaissance Re, strike St, protection Pr, guarantee Su and service Se capability attributes; the maintenance task resource consumption mainly includes maintenance force consumption Che, maintenance equipment consumption Cma, guarantee equipment consumption Ceq and maintenance time consumption Ctm, and the resource consumption is obtained by comprehensively calculating the consumption of various types of resources; The priority / importance of the maintenance tasks is: ; in: ; ; ; .

[0013] Preferably, for the maintenance task being considered, the number of maintenance tasks that can be reached within a certain maneuvering range is used as the task cluster evaluation index to determine the task cluster advantage, which is: ; in: Indicates The task cluster advantage coefficient of the maintenance task is Indicates The number of other tasks that can be reached within the maneuvering range of a maintenance task, represents the set of all maintenance tasks, Indicates Maintenance tasks and The maneuvering distance between maintenance tasks, represents the effective reachable maneuvering range, Indicates the total number of maintenance tasks; The revised priority / importance of the maintenance task is: .

[0014] Optimally, principle ③ ensures the carrying capacity of the maintenance support shelter. Within the effective maneuvering range of the shelter under investigation, the maintenance tasks whose total amount meets the carrying capacity of the maintenance support shelter are determined item by item in order, and the maintenance task priority and maintenance force organization are re-determined, which are: ; The maintenance wave set based on the shelter is: ;in: Represents the total number of maintenance waves, , For the A maintenance task, Indicates The number of maintenance tasks in a maintenance wave is: ; ; in, Indicates the task With the task The maneuvering distance between Indicates the effective maneuvering range of the shelter under investigation.

[0015] Preferably, the manpower units used when the maintenance task is not saturated and when the maintenance task contains or is supersaturated are different.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The maintenance force grouping and scheduling method based on the minimum manpower unit constructs a set of maintenance personnel with different characteristics, establishes the minimum manpower units of different professions according to the saturation of maintenance tasks, establishes a maintenance task characteristic model according to the importance of maintenance tasks, task location, task time limit and task personnel requirements, and gives three common principles for maintenance force grouping and scheduling. Combining the above analysis, a maintenance force grouping and scheduling model based on the minimum manpower unit is obtained, which provides effective theoretical and technical support for optimizing the allocation and application of maintenance personnel in vehicle maintenance organizations, efficiently carrying out vehicle maintenance guarantees and improving maintenance capacity.

[0017] 2. The maintenance force grouping and scheduling method based on the minimum manpower unit can provide a reasonable, optimized and efficient grouping and scheduling method for the maintenance force of the vehicle maintenance organization when facing multiple maintenance tasks at the same time. In particular, when the tasks are saturated, the method can maximize the utility of the maintenance force. The method provided by the present invention can provide effective theoretical and technical support for the scheduling, application and training of the maintenance force of the vehicle maintenance organization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a flowchart of the maintenance force grouping and scheduling method based on the minimum manpower unit of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention provides a maintenance force grouping scheduling method based on the minimum manpower unit, comprising the following steps: Step 1: construct a collection of maintenance forces based on the professional and grade characteristics of professional maintenance technicians of vehicle maintenance organizations; The specific process of step 1 is as follows: the maintenance force is divided into five majors: chassis, machining, control, electrical and communication, and the constructed set is: ; The maintenance forces are classified by profession: ; in: Gathering forces for maintenance, and Represents a collection of professional chassis maintenance personnel. and Represents a collection of professional machining maintenance personnel. and Represents a collection of control professional maintenance personnel, and Represents a collection of electrical professional maintenance personnel. and It represents a collection of maintenance personnel specialized in communications; and: ; in: The total number of maintenance personnel in the vehicle maintenance organization. Indicates the number of professional chassis maintenance personnel, Indicates the number of professional maintenance personnel for machining. Indicates controlling the number of professional maintenance personnel. Indicates the number of electrical professional maintenance personnel, Indicates the number of maintenance personnel specialized in communications; The maintenance force is divided into two categories: technicians and skilled personnel, and the constructed set is: ; In addition to daily vehicle maintenance tasks, technicians are also responsible for business coordination with various levels and units and the training and guidance of skilled personnel in repair skills; skilled personnel usually need to complete vehicle repair tasks on time and ensure the quality of vehicle maintenance. Technical personnel can be divided into three levels according to their professional title and ability level, namely assistant engineer, engineer, and senior engineer; skilled personnel can be divided into five levels according to their professional skill appraisal and allocation level, namely junior, intermediate, senior, technician, and senior technician, namely: ; Maintenance forces are divided into levels: ; in, and represents a collection of assistant engineers and technicians, and Represents a collection of engineers and technicians, and Represents a collection of senior engineers and technicians, and represents the set of primary skilled personnel, and represents the set of mid-level skilled personnel, and represents the collection of highly skilled personnel, and Represents a collection of technicians and skilled personnel, and It represents a collection of senior technicians and skilled personnel; and: ; in, Indicates the number of assistant engineer technicians, Indicates the number of engineers and technicians, Indicates the number of senior engineers and technicians, represents the number of primary skilled personnel, represents the number of mid-level skilled personnel, represents the number of highly skilled personnel, Indicates the number of skilled technicians, Indicates the number of skilled personnel at the senior technician level; Taking into account the profession and level of maintenance forces, we have: ; in, Indicates the total number of maintenance professions, Indicates the total number of repair force levels: Step 2: According to the maintenance task saturation, the minimum manpower unit based on the minimum demand state is constructed to form an expert force set, a backbone force set, and a novice force set with different attributes; The specific process of step 2 is as follows: When vehicle maintenance organizations complete base repair and support and guarantee tasks, they usually have three main types of maintenance tasks: vehicle grade repair, patrol inspection and repair, and emergency repair. Grade repair refers to the in-depth and comprehensive repair of vehicles carried out at the base or in the field. Grade repair requires all professional maintenance personnel to comprehensively disassemble, clean, identify, repair, install and debug all systems and components of the vehicle. It is a vehicle repair task completed by relatively fixed maintenance team members over a long period of time. Patrol inspection and repair refers to the support and guarantee maintenance service activities carried out irregularly by vehicle maintenance organizations based on the annual task arrangements and the vehicle usage of the guarantee objects. Its main feature is that it is mainly short-term support services of half a day or a full day, and occasionally there will be a small number of medium- and long-term accompanying guarantees and fixed-point guarantee tasks. The professional and number of patrol inspection and repair personnel are relatively uncertain, but they all need to meet the constraints of the minimum manpower unit to complete the task. Rescue and repair refers to the on-site support tasks carried out for vehicles that have broken down in the wild environment, to quickly restore basic functions, or to quickly tow them away from the scene of the breakdown. Its main characteristics are that the task time is urgent, requiring the dispatched maintenance and support personnel to be able to complete the rescue and repair tasks in a short time, and the requirements for personnel expertise and number of personnel for this type of task are relatively uncertain, but they all need to meet the constraints of the minimum manpower unit to complete the task.

[0021] From the above analysis, it can be seen that when organizing the maintenance force for vehicle maintenance tasks, it is necessary to determine the required maintenance personnel profession and number of personnel based on the minimum manpower unit according to different situations and different tasks. Here, the minimum manpower unit is determined based on the task saturation state, and the task's demand for maintenance personnel will be detailed in the task feature modeling.

[0022] The vehicle maintenance task saturation can be calculated by Indicates that when When , it means that the maintenance task is not saturated, that is, the maintenance force resources are sufficient, and a larger minimum manpower unit can be used. On the one hand, the vehicle maintenance task can be completed as soon as possible. On the other hand, different levels of personnel can be matched to perform tasks, which can well train the professional skills of novices and play an effective role in training maintenance professionals. When , it means that the maintenance task is saturated or oversaturated, that is, the maintenance force resources are short, the maintenance task is heavy, and the pressure of executing the maintenance task is relatively high. At this time, a smaller minimum manpower unit can be used to ensure that more maintenance tasks can be effectively carried out while the selected maintenance tasks can be completed on time. That is, the manpower unit used when the maintenance task is not saturated is different from that when the maintenance task is included or oversaturated. The specific selection is based on the needs and is not limited here.

[0023] Considering the saturation of vehicle maintenance tasks and determining the minimum feasible manpower quantity for different maintenance specialties, the minimum manpower unit matrix is ​​constructed as follows: ; in: Represents the minimum human unit matrix; Represents the minimum manpower unit matrix under the non-saturated state of vehicle maintenance tasks; The minimum manpower unit matrix under the saturation state of vehicle maintenance tasks is: ; in: ; ; ; ; ; ; ; ; ; ; ; in: ; ; ; ; ; ; ; ; ; .

[0024] Step 3: Establish a maintenance task feature model based on the importance of the maintenance task, task location, task time limit, and task personnel requirements, and analyze the typical characteristics of each feature state of different types of tasks; The specific process of step 3 is as follows: The source of the vehicle maintenance task model is a task description text containing type requirement information. For vehicle maintenance tasks issued by middle and superior levels, the importance of the maintenance tasks, the location of the maintenance tasks, the maintenance time requirements and the maintenance force requirements (personnel profession and personnel level) are evaluated.

[0025] Mission importance is determined by the criticality of the mission vehicle , the importance of the vehicle to the system and maintenance task resource consumption The importance index value obtained by evaluation ,have: ; The maintenance task location refers to the coordinates of the maintenance task location , feasible maneuvering routes from vehicle maintenance organizations to mission locations and information on the distance of each motorway route ,have: ; in: ; ; Assume that there is There are 2 feasible routes for maneuvering. ; Maintenance time requirements include maintenance force preparation time, force mobility transfer time, and maintenance implementation time, including: ;in: ; The maintenance force demand is mainly to determine the required maintenance personnel profession, level and corresponding number, to ensure that the repair task can be completed within the maintenance time limit, and to minimize the consumption and occupation of maintenance force resources. Therefore, the demand for the number of professionals is: ; in: Indicates the minimum number of maintenance personnel required for chassis specialties. Indicates the minimum number of chassis professional maintenance personnel required for the task, Indicates selection based on vehicle maintenance task saturation or A certain value in the list; and it is necessary to ensure that each profession has at least one professional and technical backbone personnel or above.

[0026] ; ; Similar ones ; in: ; .

[0027] Step 4: According to the mission importance / task priority, mission location and support resource utility, clarify the priority principle of maintenance force organization and scheduling, and form a logical model of the priority principle; The specific process of step 4 is as follows: Commonly used priority principles include: ①, based on the priority / importance of maintenance tasks The mission importance is an importance index value obtained by evaluating the criticality of the mission vehicle, the importance of the vehicle to the system, and the cost-effectiveness of the maintenance mission. The criticality of the mission vehicle is determined by looking up the established vehicle model type criticality table Tbl.Type, and can also be determined by referring to the reference vehicle model type repair equivalent comparison table Tbl.Eqvl; the importance of the vehicle to the system is determined by the system contribution rate, which is calculated by the contribution ratio of the vehicle to the system's decision-making De, mobility Mo, reconnaissance Re, strike St, protection Pr, support Su and service Se capabilities; the maintenance task resource consumption mainly includes maintenance force consumption Che, maintenance equipment consumption Cma, support equipment consumption Ceq and maintenance time consumption Ctm, and the resource consumption is obtained by comprehensively calculating the consumption of various types of resources. Then there is the first The priority / importance of the maintenance tasks is: ; in: ; ; ; .

[0028] ②. Based on ①, take the advantages of maintenance task cluster as the principle On the basis of principle ①, the maintenance task cluster advantage is used as a supplementary or corrective condition to re-evaluate and calculate the execution order of the maintenance tasks. Considering the location of different maintenance tasks, when there are several tasks close to each other, under certain conditions, the same wave of maintenance resources can be used to complete multiple tasks clustered together. This method can significantly improve the efficiency of completing maintenance tasks. That is, for the maintenance task under consideration, the number of maintenance tasks that can be reached within a certain maneuvering range is used as the task cluster evaluation index to determine the task cluster advantage. ; in: Indicates The task cluster advantage coefficient of the maintenance task is Indicates The number of other tasks that can be reached within the maneuvering range of a maintenance task, represents the set of all maintenance tasks, Indicates Maintenance tasks and The maneuvering distance between maintenance tasks, represents the effective reachable maneuvering range, Indicates the total number of maintenance tasks; The revised priority / importance of the maintenance task is: .

[0029] ③. Based on ①, the principle is to maximize the utilization of maintenance and support resources On the basis of principle ①, the maintenance support resource utilization rate is used as a supplementary or revised condition to re-evaluate and calculate the execution order of maintenance tasks. When vehicle maintenance organizations carry out patrol inspections and repairs and rescue and emergency repairs, they need maintenance support cabins as a means of transport to transport various types of maintenance support resources. Maintenance support cabins are support resources with large carrying capacity and relatively short total amount. That is, it is necessary to make full use of the carrying capacity of maintenance support cabins to ensure that more repair tasks can be completed in each operation when they go out to perform maintenance support tasks. Assume that the carrying capacity of maintenance support cabins for support resources is: ;in: Indicates the maintenance support shelter's carrying capacity for maintenance forces. Indicates the carrying capacity of the shelter for maintenance equipment. Indicates the cabin's carrying capacity for maintenance equipment.

[0030] On the basis of the task priority sequence determined in principle ①, within the effective maneuvering range of the shelter under investigation, the maintenance tasks whose total amount meets the carrying capacity of the maintenance support shelter are determined item by item in order, with the first shelter as the first wave of maintenance tasks, and so on, in order to redefine the maintenance task priority sequence and maintenance force formation, as follows: ; The maintenance wave set based on the shelter is: ;in: Represents the total number of maintenance waves, , For the A maintenance task, Indicates The number of maintenance tasks in a maintenance wave is: ; ; in, Indicates the task With the task The maneuvering distance between Indicates the effective maneuvering range of the shelter under investigation.

[0031] Step 5: Based on the analysis of the above four steps, a mathematical model for the optimal maintenance force grouping and scheduling based on the minimum manpower unit is constructed, and the specific objective function and constraint conditions of the maintenance force optimization grouping and scheduling model are given; the established mathematical model is: ; in: , Indicates the number of maintenance tasks; It indicates the number of professional minimum manpower units used for the maintenance task; The constraints are: ① Maintenance task saturation constraint ; ②The person in charge of each professional maintenance is responsible for the constraints ; ; ③The number of professional personnel groups must not be less than the corresponding maintenance force demand constraints ; ④ Based on the priority / importance of maintenance tasks, there is a constraint on the order of importance of the maintenance tasks to be performed. ; in: Indicates the vehicle maintenance task saturation. When When , the maintenance task is saturated or oversaturated.

[0032] When the present invention is used, if the vehicle maintenance tasks and the corresponding task characteristic evaluation calculations are updated in real time, the real-time dynamic update of the task priority and the force grouping schedule can be completed.

[0033] Below, the present application is further described through an embodiment of the present application.

[0034] The process of the maintenance force group scheduling method based on the minimum manpower unit provided in this embodiment is as follows: Figure 1 As shown, it mainly includes the following steps: Step 1: Consider a vehicle maintenance organization with a total maintenance force of People are divided into 5 maintenance professions and 8 maintenance levels. The number of maintenance personnel in each profession and level is as follows: ; That is: , , , , , , , , , , , , .

[0035] Step 2: Determine the minimum manpower unit. Consider the demand for maintenance personnel for different tasks when vehicle maintenance organizations perform maintenance tasks, and combine the specific data information such as on-site grade maintenance, inspection and repair, and emergency repair carried out in the stage to determine the minimum manpower units of different professions under the task unsaturation state and the task saturation state. The minimum manpower unit when there is an unsaturated task is: ; in: ; ; The minimum manpower unit for saturated tasks is: ; in: ; ; ; .

[0036] Step 3: Assume that at some time , vehicle maintenance organizations received 10 maintenance tasks, including on-site grade repairs, patrol inspections and repairs, and emergency repairs, as well as various professional maintenance needs such as chassis, electrical, and communications. The specific maintenance tasks are as follows: Task 1: ={At the coordinates (100,100), a VD301 off-road vehicle overturned, the front and engine were severely damaged and could not be repaired. It needs to be repaired within 2 hours. After the rescue operation was completed, the vehicle was towed back to the maintenance organization through road support. Task 2: ={At the coordinates (100,100), there is a GQ2012 heavy engineering machinery vehicle with a damaged left front wheel. There are no tools or equipment on site to repair it. It needs to be repaired within 1 hour. Complete inspection, repair and replacement}; etc; Task 10: ={Sent by the fleet to the vehicle maintenance agency - SQ1XL03 transport vehicle, which needs to complete the annual vehicle grade repair in the maintenance agency within 20 days Complete maintenance task}.

[0037] The importance index values ​​obtained by evaluating the criticality of the mission vehicle, the importance of the vehicle to the system, and the resource consumption of the maintenance mission are: , , , , , , , , , .

[0038] According to the actual maintenance tasks, the maintenance task location information is as follows: , in, , , .

[0039] , in, , , .

[0040] etc; , in, , , .

[0041] According to the actual maintenance tasks, the maintenance task time requirement information is as follows: , in, , , .

[0042] , in, , , .

[0043] etc; , in, , , .

[0044] According to the actual maintenance tasks, the maintenance task force requirements are as follows: , , etc; .

[0045] Step 4: Based on the principle of maintenance task cluster advantage, determine the grouping and scheduling of maintenance forces, that is, on the basis of considering the priority / importance of maintenance tasks, use the maintenance task cluster advantage as a supplementary or corrective condition to re-evaluate and calculate the execution order of maintenance tasks.

[0046] The order of task priorities can be obtained from the importance index values ​​as follows: , Task cluster advantage coefficient for maintenance tasks: , , , , , , , , , .

[0047] The revised priority / importance of the maintenance task is: , , , , , , , , , .

[0048] Revised maintenance task priority / importance ranking: .

[0049] Step 5: Based on the above steps, a maintenance force grouping scheduling model based on the minimum manpower unit can be established. The objective function to minimize the number of maintenance personnel under maintenance tasks is: ; The constraints are: .

[0050] That is, the optimization results of maintenance force grouping scheduling based on the minimum manpower unit are shown in the following table:

[0051] As can be seen from the above table, the first maintenance task 4 requires 2 chassis professional minimum manpower units. Among the 10 maintenance tasks, 1, 2, and 4 are 1 maintenance task cluster, 3 and 5 are 1 maintenance task cluster, and 8 and 9 are 1 maintenance task cluster. Therefore, the order of task execution here is different from the priority / importance ranking of the revised maintenance tasks. When executing maintenance task 4, maintenance tasks 1 and 2 can be carried out at the same time, that is, the second maintenance task 1 is executed, and the third maintenance task 2 is executed. Considering that when executing maintenance tasks 1, 2, and 4, this cluster requires a total of 9 chassis professional maintenance personnel, that is, 2 chassis professional minimum manpower units, the 2 chassis professional minimum manpower units of maintenance task 4 can be reduced to 1, and the missing personnel can be supplemented by the extra personnel in 1 manpower unit of maintenance task 1. While meeting the overall maintenance personnel needs, the consumption of the minimum maintenance manpower unit can be effectively reduced, enabling vehicle maintenance organizations to perform more maintenance tasks and carry out more maintenance work at the same time.

[0052] The present invention adopts the above-mentioned maintenance force grouping and scheduling method based on the minimum manpower unit, constructs a set of maintenance personnel with different characteristics, establishes the minimum manpower units of different professions according to the saturation of maintenance tasks, establishes a maintenance task characteristic model according to the importance of maintenance tasks, task locations, task time limits and task personnel requirements, and provides three common principles for maintenance force grouping and scheduling. Combining the above analysis, a maintenance force grouping and scheduling model based on the minimum manpower unit is obtained, thereby providing effective theoretical and technical support for optimizing the allocation and utilization of maintenance personnel in vehicle maintenance organizations, efficiently carrying out vehicle maintenance guarantees, and improving maintenance capacity building.

[0053] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the present invention have been shown and described, it is understood by ordinary technicians in the field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A maintenance force grouping scheduling method based on the minimum manpower unit, characterized in that: The following steps are involved: Step 1: construct a collection of maintenance forces based on the characteristics of professional maintenance technicians in vehicle maintenance organizations; The specific process is: the maintenance force is divided into five majors: chassis, machining, control, electrical and communication, and the constructed set is: ； The maintenance forces are classified by profession: ； in: Gathering forces for maintenance, and Represents a collection of professional chassis maintenance personnel. and Represents a collection of professional machining maintenance personnel. and Represents a collection of control professional maintenance personnel, and Represents a collection of electrical professional maintenance personnel. and It represents a collection of maintenance personnel specializing in communications; and: ; in: The total number of maintenance personnel in the vehicle maintenance organization. Indicates the number of professional chassis maintenance personnel, Indicates the number of professional maintenance personnel for machining. Indicates controlling the number of professional maintenance personnel. Indicates the number of electrical professional maintenance personnel, Indicates the number of maintenance personnel specialized in communications; The maintenance force is divided into two categories: technicians and skilled personnel, and the constructed set is: ； Technical personnel can be divided into three levels according to their professional title and ability level, namely assistant engineer, engineer, and senior engineer; skilled personnel can be divided into five levels according to their professional skill appraisal and allocation level, namely junior, intermediate, senior, technician, and senior technician, namely: ； Maintenance forces are divided into levels: ； in, and represents a collection of assistant engineers and technicians, and Represents a collection of engineers and technicians, and It represents a collection of senior technicians and skilled personnel; and: ; in, Indicates the number of assistant engineer technicians, Indicates the number of engineers and technicians, Indicates the number of skilled personnel at the senior technician level; Considering the profession and level of maintenance force, in, Indicates the total number of maintenance professions, Indicates the total number of repair force levels: Step 2: According to the maintenance task saturation, the minimum manpower unit based on the minimum demand state is constructed to form an expert force set, a backbone force set, and a novice force set with different attributes; The minimum human unit matrix constructed is: ； in: Represents the minimum human unit matrix; Represents the minimum manpower unit matrix under the non-saturated state of vehicle maintenance tasks; Represents the minimum manpower unit matrix under the saturation state of vehicle maintenance tasks; Step 3: Establish a maintenance task feature model based on the importance of the maintenance task, task location, task time limit, and task personnel requirements, and analyze the typical characteristics of each feature state of different types of tasks; Step 4: According to the mission importance / task priority, mission location and support resource utility, clarify the priority principle of maintenance force organization and scheduling, and form a logical model of the priority principle; The priority principles include: ①, based on the priority / importance of maintenance tasks; ②, based on ①, based on the advantages of maintenance task clusters; ③, based on ①, based on maximizing the utilization of maintenance support resources; Step 5: Based on the analysis of the above four steps, a mathematical model for the optimal maintenance force grouping and scheduling based on the minimum manpower unit is constructed, and the specific objective function and constraint conditions of the maintenance force optimization grouping and scheduling model are given; the established mathematical model is: ； in: , Indicates the number of maintenance tasks; It indicates the number of professional minimum manpower units used for the maintenance task; The constraints are: ① Maintenance task saturation constraint ； ②The person in charge of each professional maintenance is responsible for the constraints ； ； ③The number of professional personnel groups must not be less than the corresponding maintenance force demand constraints ； ④ Based on the priority / importance of maintenance tasks, there is a constraint on the order of importance of the maintenance tasks to be performed. ； in: Indicates the vehicle maintenance task saturation. When When , the maintenance task is saturated or oversaturated.

2. The maintenance force grouping and scheduling method based on the minimum manpower unit according to claim 1 is characterized by: In step 2: ； ； in: ; ； ； 。 3. The maintenance force grouping and scheduling method based on the minimum manpower unit according to claim 1 is characterized by: The source of the vehicle maintenance task model is a task description text containing type requirement information. For vehicle maintenance tasks issued by middle and superior levels, the importance of the maintenance tasks, the location of the maintenance tasks, the maintenance time requirements and the maintenance force requirements (personnel profession and personnel level) are evaluated.

4. The maintenance force grouping and scheduling method based on the minimum manpower unit according to claim 3 is characterized by: Mission importance is determined by the criticality of the mission vehicle , the importance of the vehicle to the system and maintenance task resource consumption The importance index value obtained by evaluation ,have: ； The maintenance task location refers to the coordinates of the maintenance task location , feasible maneuvering routes from vehicle maintenance organizations to mission locations and information on the distance of each motorway route ,have: ； in: ; ; ; Maintenance time requirements include maintenance force preparation time, force mobility transfer time, and maintenance implementation time, including: ;in: ; The number of professionals required is: ； in: Indicates the minimum number of maintenance personnel required for chassis specialties. Indicates the minimum number of chassis professional maintenance personnel required for the task, Indicates selection based on vehicle maintenance task saturation or A certain value in the list; and it is necessary to ensure that each profession has at least one professional and technical backbone personnel or above; ； ； ;in: ； 。 5. The maintenance force grouping and scheduling method based on the minimum manpower unit according to claim 4 is characterized in that: The criticality of the mission vehicle is determined by looking up the established vehicle model type criticality table Tbl.Type, and can also be determined by referring to the reference vehicle model type repair equivalent comparison table Tbl.Eqvl; the importance of the vehicle to the system is determined by the system contribution rate, which is calculated by the vehicle's contribution to the system's decision-making De, mobility Mo, reconnaissance Re, strike St, protection Pr, support Su and service Se capability attributes; the maintenance task resource consumption mainly includes maintenance force consumption Che, maintenance equipment consumption Cma, support equipment consumption Ceq and maintenance time consumption Ctm, and the resource consumption is obtained by comprehensively calculating the consumption of various resources; The priority / importance of the maintenance tasks is: ； in: ; ； ； 。 6. The maintenance force grouping and scheduling method based on the minimum manpower unit according to claim 5 is characterized in that: For the maintenance task under consideration, the number of maintenance tasks that can be reached within a certain maneuvering range is used as the task cluster evaluation index to determine the task cluster advantage: ； in: Indicates The task cluster advantage coefficient of the maintenance task is Indicates The number of other tasks that can be reached within the maneuvering range of a maintenance task, represents the set of all maintenance tasks, Indicates Maintenance tasks and The maneuvering distance between maintenance tasks, represents the effective reachable maneuvering range, Indicates the total number of maintenance tasks; The revised priority / importance of the maintenance task is: .

7. The maintenance force grouping and scheduling method based on the minimum manpower unit according to claim 5 is characterized by: Principle 3: Ensure the carrying capacity of the maintenance support shelter. Within the effective maneuvering range of the shelter under investigation, determine the maintenance tasks whose total amount meets the carrying capacity of the maintenance support shelter in order, and redefine the maintenance task priority and maintenance force organization, which are: ; The maintenance wave set based on the shelter is: ;in: Represents the total number of maintenance waves, , For the A maintenance task, Indicates The number of maintenance tasks in a maintenance wave is: ； ； in, Indicates the task With the task The maneuvering distance between Indicates the effective maneuvering range of the shelter under investigation.

8. The maintenance force grouping and scheduling method based on the minimum manpower unit according to claim 1 is characterized by: The manpower units used when the maintenance task is not saturated are different from those used when the maintenance task is contained or oversaturated.

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