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Aero-engine assembly task priority ordering method

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: 2014-08-27
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

Method used

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  • Aero-engine assembly task priority ordering method
  • Aero-engine assembly task priority ordering method
  • Aero-engine assembly task priority ordering method

Examples

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Embodiment Construction

[0068] Describe the present invention below in conjunction with specific embodiment:

[0069] In this example, the aero-engine assembly workshop of an enterprise undertakes four types of assembly tasks, including research and development, batch production, maintenance, and overhaul of a certain type of aero-engine, and has three production lines PL 1 ,PL 2 ,PL 3 , the maximum loads are 5, 10, and 8 in sequence, and the current loads are 3, 7, and 4 in sequence, and the unit is pcs. Different types of tasks are mixed on the three production lines. The users of the whole machine include CAC Company, SAC Company and XAC Company (the degree of influence on task priority is from strong to weak, and the index values ​​are 0.75, 0.50, 0.25). This type of aero-engine consists of three units (ET 1 , ET 2 , ET 3 ), unit body ET 1 Corresponding part P 1 , unit cell ET 2 Corresponding part P 2 , unit cell ET 3 Corresponding part P 3 , P 4 . There are five assembly tasks T in...

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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 an aero-engine assembly task priority sorting method. Background technique [0002] In the fierce market competition environment, as the relationship between enterprises and users changes from a seller's market to a buyer's market, users have higher and higher requirements for on-time delivery of products under the premise of ensuring quality. As the last link of product manufacturing and one of the most critical links, assembly often has a direct impact on delivery. From the perspective of manufacturing system modeling, the aero-engine 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 punctual delivery with high quality an important factor for the survival and development of enterprises. key elements of . As a large...

Claims

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Application Information

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