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Genetic optimization of reliability design of machine element

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中国有色金属学会会刊：英文版 2001年第2期11卷 315-318页

作者：郭观七喻寿益中南大学机电工程学院湖南长沙 410083

Canonical genetic algorithms have the defects of prematurity and stagnation when applied in optimization problems. The causes resulting in such phenomena were analyzed and a class of improved genetic algorithm with niche implemented by crossover of similar individuals and ( μ+λ ) selection was proposed. According to the reliability design theory of machine components, the genetic optimization model of jack clutch was obtained. An optimization instance and some results calculated by improved genetic algorithm were presented. The results of emulations and application show that the improved genetic algorithm with the niche technique can achieve the reliable global convergence and stable convergent velocity almost without any additional calculation expense. [

关键词： genetic optimization niche mechanism design reliability design

reliability design of Ice-Maker System Subjected to Repetitive Loading

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Engineering（科研） 2016年第9期8卷 618-632页

作者： Seong-Woo Woo reliability Association of Korea Seoul South Korea

Parametric Accelerated Life Testing (ALT) was used to improve the reliability of ice-maker system with a fractured helix upper dispenser in field. By using bond graphs and state equations, a variety of mechanical loads in the assembly were analyzed. The acceleration factor was derived from a generalized life-stress failure model with a new load concept. To reproduce the failure modes and mechanisms causing the fracture, new sample size equation was derived. The sample size equation with the acceleration factor also enabled the parametric accelerated life testing to quickly reproduce early failure in field. Consequently, the failure modes and mechanisms found were identical with those of the failed sample. The design of this testing should help an engineer uncover the design parameters affecting the reliability of fractured helix upper dispenser in field. By eliminating the design flaws, gaps and weldline, the B1 life of the redesign of helix upper dispenser is now guaranteed to be over 10 years with a yearly failure rate of 0.1% that is the reliability quantitative test specifications (RQ).

关键词： reliability design Sample Size Equation Acceleration Factor Parametric Accelerated Life Testing Helix Upper Dispenser reliability Quantitative Test Specifications (RQ)

A method of multi-objective reliability tolerance design for electronic circuits

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Chinese Journal of Aeronautics 2013年第1期26卷 161-170页

作者： Zhai Guofu Zhou Yuege Ye Xuerong Hu Bo School of Electrical Engineering and Automation Harbin Institute of Technology

Tolerance design plays an important role in reliability design for electronic circuits. The traditional method only focuses on the consistency of output response. It is not able to meet the needs of increasing development of electronic products. This paper researches the state of related fields and proposes a method of multi-objective reliability tolerance design. The characteristics of output response and operating stresses on critical components are both defined as design objectives. Critical components and their operating stresses are determined by failure mode and effect analysis （FMEA） and fault tree analysis （FTA）. Sensitivity analysis is carried out to determine sensitive parameters that affect the design objectives significantly. Monte Carlo and worst-case analysis are utilized to explore the tolerance levels of sensitive parameters. design of experiment and regression analysis are applied in this method. The optimal tolerance levels are selected in accord with a quality-cost model to improve consistency of output response and reduce failure rates of critical components synchronously. The application in light-emitting diode （LED） drivers indicates details and potential. It shows that the proposed method provides a more effective way to improve performance and reliability of electronic circuits.

关键词： design of experiments Multi-objective Quality-cost model reliability design Sensitivity analysis Tolerance design

The Gamma Fuzzy reliability design of Vehicle parts

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The Gamma Fuzzy Reliability Design of Vehicle parts

The reliability design of a Kind of Multioption Fuze

2009中国控制与决策会议

作者： Tie Wang~1,Gaonan Wang~2,Jianyang Lin~3 1.School of Vehicle,Shenyang Ligong University,Shenyang 110168,China. 2.School of Mechanical Engineering,Tsinghua University,Beijing 100084,China. 3.The first affiliated hospital,China Medical University,Shenyang 110001,China

With considering lightening and safety of strength,integrations of both distribution’s density and function’s density,the normal fussy reliability formulas about vehicle parts that forces,strengths are gamma distribution and subordinate is parabola of exponential k was gotten;First integral change was achieved according to initial data and function imported and extent of integrated,second this number result with VB program in the computer was achieved by using middle-points integral calculus and romberg integration. This program can be used in design of vehicle parts for rising up level of design.

关键词： Vehicle parts reliability design Gamma distribution Fussy mathematics

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cnki会议

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Journal of Beijing Institute of Technology 1996年第2期5卷 170+162-170页

作者：邓甲昊施聚生北京理工大学机电工程系

On the basis of analysing the reliability problems existing in the general design of a kind of multioption fuze. some problems such as the reliability model. the reliability distribution of the electronic part of the fuze are discussed. For a particular multioption fuze, *** to three different setting ways. the calculating methods of its operating reliability in six different operating states are given.

关键词： multioption fuze reliability design reliability calculation reliability modelling proximity fuze

可靠性设计方法(reliability design)

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工业工程与管理 2000年第6期 40-40页

Research on Optimal design for reliability of Fuze Components

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Defence Technology（防务技术） 2009年第4期5卷 277-280页

作者：张涛汪波 School of Management Tianjin University Shanxi Fenxi Heavy Industry Co Ltd

reliability optimal design is an integrated approach widely adopted in engineering. The fuze components are designed by a BP neural network combined with an optimal design approach based on their multi-failure modes. Their reliability probabilities in multi-failure modes are transformed into deterministic design parameters. The designed results by an example of optimizing the fuze spring under a certain reliability show that the integrated approach is practical and efficient.

关键词： system engineering reliability design neural network fuze components random simulation

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新一代运载火箭分离系统可靠性设计方法研究

Aerospace China 2023年第2期24卷 3-8页

作者： SONG Yiping JIANG Zhou HUANG Hui YUAN Shuilin WANG Qian Beijing Institute of Astronautical Systems Engineering Beijing 100076

The LM-5B carrier rocket is a new-generation large-scale launch vehicle developed for space station launch *** separation system includes fairing separation,space station module-rocket separation,and booster *** separation systems play an important role in the design of launch vehicles,and any failure during the separation process would affect the final completion of rocket flight *** paper presents the reliability design and analysis for the LM-5B carrier rocket separation *** LM-5B carrier rocket separation system was developed on the basis of the LM-5 carrier rocket separation system,inheriting its booster separation system and fairing separation system scheme,which maximizes the reliability of the separation *** reliability of the LM-5B fairing separation system,booster separation system and space station module-rocket separation system can meet the requirements for launch *** demonstration results prove that redundant design of the separation systems was the most effective technical means to improve reliability.

关键词： LM-5B carrier rocket separation system reliability design