6σ Robust Optimization Design for Wedge Ring Connection Structure of Torpedo
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摘要: 在优化设计中主要存在设计变量的初值选取，设计变量的随机波动和外来干扰造成的可靠性和稳健性问题。确定性优化结果往往位于约束边界附近,随机波动容易导致设计失效。稳健设计可使产品对使用环境变化的不敏感,能保证产品使用的可靠性并降低操作费用。该文提出了将6σ稳健设计方法与序列二次规划法相结合的方法,并以鱼雷楔环联接结构为例进行了优化设计，通过与确定性优化的对比,验证了所提出的优化方法具有良好的优化效果,为工程实际的机械产品的稳健优化设计提供了理论依据。Abstract: The main problems in optimization design include unsuitable initial value selection,circumstance interferences and random fluctuation of variables,which make the quality of product unstable.Robust design is a useful way to make quality of product insensitive to these factors.Combing the 6σ concept with sequential quadratic programming,this paper established a 6σ robust optimization design method,which not only searches the optimum results for the design object,but also improves the robustness and reliability of a product.Taking the design of the wedge ring connection structure of torpedo as an example,the presented method was used to obtain better optimum solution than the one with the deterministic optimization method.
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Key words:
- wedge ring connection structure /
- 6σ robust design /
- optimization design /
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