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Virtual prototype disassembly sequence planning method

A technology of sequence planning and virtual prototyping, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as different disassembly tasks, improve accuracy and safety, optimize disassembly sequences, and reduce maintenance training costs Effect

Inactive Publication Date: 2013-06-19
PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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Problems solved by technology

[0003] The present invention is mainly to solve the problem that the starting point and end point of the target disassembly and the release of disassembly constraints are highly arbitrary due to the different disassembly tasks existing in the actual disassembly and maintenance process of the missile launching vehicle.

Method used

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Embodiment Construction

[0017] (1) Product selective disassembly modeling

[0018] exist figure 1 Among them, the present invention uses the disassembly constraint graph to describe the disassembly constraint relationship between product components, thereby establishing a product disassembly model. The dismantling model consists of node set V, undirected edge set E and directed edge set R, denoted as:

[0019] DG = {V, E, R} (1)

[0020] Among them: V={v 1 , v 2 ,...,v n} is a collection of nodes, representing a collection of disassembled parts, and n is the number of disassembled parts.

[0021] E={e 1 , e 2 ,...,e m} is the set of directed edges. Indicates the priority constraint relationship between parts, such as figure 1 Vertex 3 to vertex 4 are directed edges, indicating that part 3 is disassembled before part 4.

[0022] R={r 1 , r 2 ,...,r k} is an undirected edge set, which represents the connection constraint relationship. When there is no clear or inevitable sequential disma...

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Abstract

The invention relates to virtual prototype disassembly sequence planning technology and provides a virtual prototype disassembly sequence planning method which mainly aims at solving the problem that high arbitrariness exists in a starting point and a stopping point of disassembly and removal of disassembly restriction in the process of practical maintenance disassembly of a guided missile device due to different disassembly missions. Due to lack of scientific judgment on a feasible disassembly sequence of the device, particular of a guided missile weaponry device, the guided missile weaponry device is complex in assembly structure and large in maintenance operation difficulty, wrong disassembly operation and procedure usually lead to damage of the device and danger is brought to an operator. According to disassembly characteristics of the guided missile device, a disassembly risk factor serves as a cost function, based on the foundation that disassembly safety is considered, a selective disassembly sequence optimized model based on mutual restriction relationship of parts is established, a selective disassembly sequence optimized algorithm based on an ant colony algorithm is designed and the optimal selective disassembly sequence or the selective disassembly sequence close to optimization is searched from all the feasible sequences. The virtual prototype disassembly sequence planning method can guide practical assembly and maintenance operation, effectively reduce maintenance and training expense and improve maintenance accuracy and safety.

Description

technical field [0001] The invention can solve the unreasonable problem of unreasonable parts disassembly existing in the maintenance operation of missile weapon equipment, optimize the disassembly sequence to guide the maintenance operation, reduce the maintenance training cost, and improve the accuracy and safety of maintenance. At the same time, this technology can be applied to equipment operation and performance testing to help users gain an in-depth understanding of equipment structure. Background technique [0002] The selective disassembly sequence refers to the order in which the components that are constrained to the target part are separated from the product during the product disassembly process. The choice of disassembly sequence directly affects the time taken for the disassembly process, the types of tools and fixtures required, and the time it takes to replace them. The selective disassembly sequence programming problem is an NP-hard combinatorial optimizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 曹继平宋建社王强黄东坡郭军叶庆杨正磊
Owner PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
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