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A method for prioritizing aero-engine assembly tasks

A technology of aero-engine and sorting method, which is applied in the fields of instruments, manufacturing computing systems, data processing applications, etc., can solve problems such as poor effect and difficulty in multi-factor coordination, and achieve the effect of reducing information loss

Inactive Publication Date: 2017-04-12
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] In order to solve the problems of poor artificial qualitative ranking of production task priorities in the aero-engine assembly workshop and difficulties in multi-factor coordination, the present invention provides a method for prioritization of aero-engine assembly tasks

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  • A method for prioritizing aero-engine assembly tasks
  • A method for prioritizing aero-engine assembly tasks
  • A method for prioritizing aero-engine assembly tasks

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Embodiment Construction

[0068] The present invention will be described below in conjunction with specific embodiments:

[0069] In this embodiment, the aero engine assembly workshop of an enterprise undertakes four production types of assembly tasks including development, mass production, maintenance, and overhaul of a certain type of aero engine. There are three production lines PL 1 ,PL 2 ,PL 3 , The maximum load is 5, 10, 8 in sequence, and the current load is 3, 7, 4 in sequence, and the unit is one. Different types of tasks are mixed and executed on three production lines. The user side of the whole machine includes CAC, SAC and XAC (the degree of influence on task priority is from strong to weak, and the index value is 0.75, 0.50, 0.25). This type of aero engine includes three unit bodies (ET 1 ,ET 2 ,ET 3 ), unit cell ET 1 Corresponding part P 1 , Unit body ET 2 Corresponding part P 2 , Unit body ET 3 Corresponding part P 3 ,P 4 . There are five assembly tasks in the batch plan T 1 ,T 2 ,T 3 ,T ...

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Abstract

The invention provides an aero-engine assembly task priority ordering method. The method includes the steps that firstly, according to a correlation dominance relation of task attributes, an attribute hierarchical model is established, indexes are quantitatively expressed, and after the attribute value of each task is processed, a standardized decision matrix is obtained; secondly, when index weights are determined, various weight calculation methods exist, on the basis, a multi-type weight balancing method with the minimum sum of the deviation square and the maximum sum of weighing index values serving as targets is raised, and therefore balance weights of the indexes are obtained; finally, the balance weights and the standardized decision matrix are used, the improved TOPSIS method with the Euclidean distance replaced by the contact distance is adopted for ordering row vectors in the weight standardized decision matrix, so that a priority order result of the tasks is obtained. According to the method, multiple types of weight information is comprehensively considered and balanced, information loss caused by single-type weight assignment can be reduced, and meanwhile, the improved TOPSIS method can overcome the defects of a traditional method.

Description

Technical field [0001] The invention relates to the field of assembly task planning, in particular to a method for prioritizing aero engine assembly tasks. Background technique [0002] In the fierce market competition environment, as the relationship between enterprises and users shifts from a seller’s market to a buyer’s market, users are increasingly demanding on-time delivery of products under the premise of ensuring quality. Assembling, as the last link and one of the most critical links in product manufacturing, often has a direct impact on delivery. From the perspective of manufacturing system modeling, the aeroengine assembly process has the characteristics of discrete state space and event-driven state transition. It is a typical discrete event dynamic system. Its product characteristics and industry characteristics make timely and quality delivery a business survival and development. Key elements of As a large-scale military complex product, the assembly process of ae...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/04
CPCY02P90/30
Inventor 莫蓉李联辉常智勇孙惠斌万能
Owner NORTHWESTERN POLYTECHNICAL UNIV
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