Visual modeling method for airplane assembling process

Abstract

The invention relates to a visual modeling method for an airplane assembling process. The visual modeling method comprises a visual object definition process for a place object, a transition object, a directed arc object and a hierarchical object and a visual modeling process. The method comprises the following steps of: defining the place object, the transition object, the directed arc object and the hierarchical object and respectively visualizing the place object, the transition object, the directed arc object and the hierarchical object; establishing an automatic connection between the place object and the transition object and an automatic connection between the hierarchical object and transition; storing and repealing the defined objects; establishing incidence relation of model objects; and performing visual definition and storage on relation between an upper-layer model and a lower-layer model.

Description

Technical field [0001] The invention relates to a visual modeling method of a complex product assembly process, which is particularly suitable for the modeling of an aircraft assembly process, and belongs to the technical field of manufacturing system modeling. Background technique [0002] Modern aircraft basically adopt the manufacturing model of customized production according to customer orders, with small production batches and many varieties. The aircraft production process is basically managed according to the order of aircraft. The aircraft assembly process has complex assembly procedures, multiple assembly contents, multiple assembly space levels (assembly line-station-station-process), manual assembly operations, narrow working surface, strong assembly operation time uncertainty, and assembly sequence control Strict and other characteristics, its production efficiency and cost directly depend on the performance of the aircraft assembly line. Therefore, in order to impr...

AI Technical Summary

Problems solved by technology

The human-computer interaction modeling method of the simulation system is more practical, but there are problems such as the logical relationship and timing relationship between objects are not strictly checked, the modeling efficiency is low, and the workload is heavy.

Petri net-based modeling methods include basic Petri nets and various extended Petri nets (including colored Petri nets, stochastic Petri nets, object-oriented Petri nets, hierarchical Petri nets, hierarchical object-oriented Petri nets, object-oriented stochastic Petri nets etc.), this method has a relatively strict mathematical basis and a strong ability to describe discrete event dynamic systems, and has significant advantages in performance evaluation, but it has the following problems when describing a complex system such as the aircraft assembly process: the structure is too large It is cumbersome and cannot simultaneously describe the characteristics of space layering, object-oriented, randomness of assembly time, etc., and there is no visualization method and system

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