Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2014, Vol. 37 ›› Issue (3): 23-26,42.doi: 10.13190/j.jbupt.2014.03.005

Previous Articles     Next Articles

Multi-Objective Robust Design for Reliability Based on Grey System Theory

ZHANG Rui-jun1,2, QIU Ji-wei1, JIA Qing-xuan2   

  1. 1. School of Mechanical and Electronic Engineering, Shandong Jianzhu University, Jinan 250101, China;
    2. School of Automation, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2013-08-12 Online:2014-06-28 Published:2014-06-08

Abstract:

Additional items of sensitivity of objective and constraint functions are generated through analyzing the corresponding functions objective functions and constraints. Two models of optimization design for reliability are proposed based on the additional items of sensitivity. According to the limitations of information for objective functions obtained from different evaluators, the objective functions and the evaluators' assessment based on gray system theory was allocated in a certain range. The expert assessment method is presented to calculate the weight coefficients of the objective functions. Reliability-based robust optimization design of cylindrical helix spring is achieved by using the optimization toolbox and symbolic toolbox of Matlab. Numerical examples prove that the proposed approach which provided the theoretic basis for the reliability design of the mechanical elements has a higher precision and reliability.

Key words: multi-objective optimization, grey system theory, sensitivity design, reliability-based robust design

CLC Number: