基于熵权理想点综合评价的发动机状态特征优选

Engine State Characteristics Optimization Based on Entropy Weight Ideal Points Comprehensive Evaluation

针对发动机性能评估及预测过程中特征参数多,且对其进行评价及优选的标准不统一的问题,从相关性、单调性、离散性等方面考虑,提出了系列特征参数的综合评价指标,采用基于熵权理想点的综合评价方法,从信息量的角度实现了多指标的客观定权,并通过实例分析验证了该方法的有效性,最终实现了基于该方法优选结果的发动机寿命预测。

In view of the problem that there are many characteristic parameters in the process of engine performance evaluation and prediction,and the evaluation and optimization standards are not unified,a series of comprehensive evaluation indicators are proposed in consideration of correlation,monotonicity,discreteness,and etc.. The comprehensive evaluation based on entropy weight ideal point method is adopted to realize the objective weight determination of multiple indexes from the perspective of information content. The effectiveness of the method is verified by examples and analysis. Finally,the engine life prediction based on the optimization results of this method is realized.