Multi-objective optimization method and device for aircraft pulsating final assembly process

Abstract

The invention discloses a multi-objective optimization method and a device oriented to an airplane pulsation final assembly operation process. The method comprises the following steps: constructing anAO inter-node constraint and resource association model according to an assembly process; taking the process priority, the process station selection and the resource capability as decision variables,taking the assembly process, the space and the resources as constraint conditions, taking the minimized beat and the minimized resources as optimization objectives, and based on the AO inter-node constraint and resource association model, obtaining an optimal solution set of the beat and the resources by adopting a multi-objective optimization algorithm; and according to the optimization solutionset obtained by the multi-objective optimization algorithm, summarizing problems existing in the process, and proposing corresponding improvement suggestions. Obviously, multi-objective optimizationcalculation is carried out in the operation arrangement process, a set of operation arrangement and technological process improved integrated optimization solution is provided, integrated optimizationof the assembly technological process and operation arrangement is achieved, the production takt and resource requirements are reasonably controlled, and the assembly efficiency is improved.

Description

technical field [0001] The invention relates to the field of aviation digital assembly, in particular to a multi-objective optimization method and device for aircraft pulsation final assembly operation process. Background technique [0002] The multi-objective optimization for aircraft pulsating assembly process is based on the pulsating assembly production line, using the multi-objective optimization theory, with reasonable assembly process, minimum production line beat and resource demand as the optimization goals, the process flow and operation arrangement are carried out. Integrated optimization, so as to rationally allocate resources, reduce production costs, and improve assembly efficiency. Due to the large number of processes, complex types of resources, and many constraints in the aircraft pulsating final assembly process, there are high requirements for process planning and job scheduling in the aircraft final assembly process. [0003] At present, the existing ass...

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Problems solved by technology

[0003] At present, the existing assembly process planning and job scheduling methods can no longer meet the actual requirements of the pulsating assembly line, and the main problems are as follows:

However, in the actual assembly process, the types of resource requirements are complex and there are quantitative constraints. Only considering a single goal such as the production cycle will cause the production plan to fail to meet the constraints of multiple resource requirements, so that the job scheduling plan lacks practical application value.

[0005] (2) Assembly process design does not consider assembly line balance

The traditional assembly process design only considers the assembly requirements of the aircraft structure, but does not consider the balance of the assembly line, which will lead to problems such as the rhythm of the production line and unbalanced resource requirements, thereby reducing assembly efficiency

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