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Research on Disassembly Sequence Planning Based on Genetic Algorithms

Author: HanJianSheng
Tutor: YinZhouPing
School: Huazhong University of Science and Technology
Course: Mechanical and Electronic Engineering
Keywords: Disassembly Demolition Modeling Disassembly precedence relations Disassembly sequence planning Genetic Algorithms
CLC: TB115
Type: Master's thesis
Year: 2007
Downloads: 138
Quote: 4
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Abstract


Disassembly sequence planning is an important part of the research for product disassembly . Disassembly sequence planning is to determine the order of assembly parts to be demolished meet feasible disassembly of components , in order to meet certain demolition target . Disassembly sequence planning problem has three core issues : ① evaluation and optimization of product disassembly information modeling ; ② disassembly sequence solving strategies ; ③ disassembly sequence . In this paper, the research status at home and abroad , product disassembly sequence planning of key technologies in-depth research , put forward a set of solutions to the large - scale assembly disassembly sequence generation , evaluation and optimization . The research topics include : ( 1 ) product disassembly information model is disassembly sequence planning research and one of the main content . A detailed analysis of the status of demolition modeling using enhanced connection diagram and enhanced relationship between the coupling matrix expression product disassembly and assembly parts . References the concept of a sub - assembly and disassembly model information can be simplified , reducing the redundancy information of the model . ② introduce the main methods of disassembly sequence generation , demolition parts precedence constraint relations , the establishment of a demolition priority relations between parts of the assembly matrix based on directional search strategy generated reasonably practicable under the guidance of the demolition of the priority relations disassembly sequence of initial population . ③ introduces the basic principles of genetic algorithms , methods , and combine the characteristics of disassembly sequence planning , determine the appropriate encoding , genetic operators , the establishment of an appropriate fitness function , complete disassembly sequence through establishing the fitness function evaluation and optimization , find disassembly sequences consistent with the actual demolition experience , has been satisfied with the results , the validity of the genetic algorithm designed in this paper is verified by an example in solving the problem of disassembly sequence planning .

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