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提出一种两阶段多目标决策方法,应用于飞机环控/发动机系统的多目标决策分析。将起飞、加速爬升和高空超音速巡航阶段的总熵产最小视为不同目标函数以建立多目标优化模型,采用多目标优化算法得到非劣最优解集。在此基础上进行方案初选,利用改进综合权重的Vague集决策方法对备选方案进行模糊评价和优选,并找到最终解。计算结果验证了该方法的合理性。
A two-stage multi-objective decision-making method is proposed for multi-objective decision analysis of aircraft loop control / engine system. The minimum entropy production during take-off, accelerated climb and high-altitude supersonic cruise phases is regarded as a different objective function to establish a multi-objective optimization model, and a non-inferior optimal solution set is obtained by using a multi-objective optimization algorithm. On the basis of this, the method of primary selection is used, and the Vague set decision making method with improved comprehensive weight is used to evaluate and optimize the alternatives and find the final solution. The calculation results verify the rationality of this method.