可拓方法的优度评价在输气管优化设计中的应用

Extension method we evaluate application in pipeline optimization design

输气管道优化设计之后往往是多解的问题,要通过科学的评价和决策方法分析筛选出符合设计要求的最佳方案,才能决定设计成果的有效性。虽然现在已发展了各种多指标综合评价方法,但对评价方案的随机性,模糊性及其在不同条件下的可变性考虑还不够。基于可拓工程方法中的优度评价理论,建立起了输气管优化设计中最佳方案的筛选方法。它运用可拓集合和关联函数对评价的事物的属性和变化进行了量化处理,通过正域,负域,零界和可拓域的概念,合理地考虑了事物的利弊双方及其动态变化,能从发展的角度筛选出最佳方案。算例计算结果分析表明,该方法能动态地优选出既满足工艺要求又经济合理的最佳方案,具有一定的实用价值。

Gas pipeline optimization design is often more solution of the problem, must through the scientific evaluation and decision-makingmethods to analyze selected the best way to comply with the design requirements, to determine the effectiveness of the design results. Although ithas developed a variety of multi-index comprehensive evaluation method, but the evaluation scheme of randomness, fuzziness and under differentconditions the variability of consideration is not enough. Based on the extension engineering method we evaluation theory, establish the best solutionin the design of the pipeline optimization method for screening. It USES the extension set and dependent function to evaluate quantitative treatmentwas conducted on the properties of things and change, through the positive region, negative field, the concept of zero and extension region reasonablyconsidering the pros and cons of both sides and its dynamic change things, can filter out the best from the perspective of development plan. Theexample calculation results show that the method can dynamically optimized, the best way to meet the technological requirements and the economicand reasonable, has a certain practical value.