• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2024, Vol. 60 ›› Issue (1): 309-328.doi: 10.3901/JME.2024.01.309

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Path Planning Method for Solving Implicit Contradiction for Complex Technical System

PU Xuejie1,2, ZHANG Jianhui1,2, LI Jianyong1,2, ZHANG Jiannan1   

  1. 1. School of Mechanical and Engineering, Hebei University of Technology, Tianjin 300401;
    2. National Engineering Research Center for Technological Innovation Method and Tool, Hebei University of Technology, Tianjin 300401
  • Received:2023-04-18 Revised:2023-07-16 Published:2024-03-15

Abstract: Aiming at the problem that the number of implicit contradictions in complex technical systems is large and the complex correlation between implicit contradiction parameters leads to the cumbersome solution process, an implicit contradiction solution path planning method for complex technical systems is proposed. Firstly, implicit contradictions are systematically identified based on need analysis and functional failure analysis, and apply ENV (Element-name-value) model to standardize the identified implicit contradictions. Secondly, the implicit contradiction is divided into two types. For the first type of implicit contradiction, the weight of implicit contradictions is calculated based on AHP (Analytic hierarchy process) to determine the solution path; For the second type of implicit contradiction, a function-behavior-structure network of complex technical systems is established, and the PageRank algorithm is used to calculate and rank the importance of network nodes, and the solution path for this type of implicit contradiction is determined. Finally, by synthesizing the solution paths of the two types of implicit contradictions, the optimal solution path is planned to obtain the implicit contradictions, and the TRIZ tool is applied to solve it quickly. Taking TZG 9 3/4-140S iron roughneck as an engineering case, the feasibility and effectiveness of the method are verified.

Key words: complex technical system, implicit contradiction identification, solving path planning, TRIZ, implicit contradiction resolution

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