基于QFD及FMEA的舰船动力装置设计质量改进模型构建方法及应用

Building method and application of improved models for design quality of marine power plant based on QFD and FMEA

    摘要
  • 摘要:
      目的  针对舰船动力装置设计中提高安全性、可靠性指标性能的问题，应用故障模式与影响分析（FMEA）预测提出控制措施。
      方法  引入质量功能展开（QFD）质量控制方法，分析风险评估对象，明确风险优先数的组成及含义，改进计算公式，进而提高风险评估的准确性和全面性。针对专家评价的多属性决策问题，采用依赖型二元语义加权几何平均算子进行评价。
      结果  以某轴系设计为例，验证了研究方法的有效性。
      结论  QFD与FMEA改进模型能够为动力装置可靠性、安全性等设计指标性能的提升提供理论和方法的支撑，同时为舰船动力装置设计水平的提高提供一定的参考。

     

    Abstract:
      Objectives  In order to improve the safety and reliability indicators performance in the design of the marine power plant, the Failure Mode and Effect Analysis(FMEA)is used to predict and propose the control measures.
      Methods  The quality control method is introduced with Quality Function Deployment(QFD)to analyze the risk assessment objects, clarify the composition and meaning of the risk priority numbers, and improve the calculation formula, thereby improving the accuracy and comprehensiveness of risk assessment. For the multi-attribute decision-making under expert evaluation, a dependent 2-tuple weighted geometric averaging(DT-WGA)operator is used for evaluation.
      Results  The effectiveness of the proposed method is verified by the shafting design of the ship.
      Conclusions  The improved models based on QFD and FMEA can provide theoretical and methodological support for improving the performance of design indicators, such as reliability and safety of the power plant, and provide a certain reference for the improvement of design level of marine power plant.

     

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