| 基于克里金模型优选的压气机特性重构研究 |
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| 引用本文： | 哈尔滨工程大学 动力与能源工程学院,黑龙江 哈尔滨.基于克里金模型优选的压气机特性重构研究[J].热能动力工程,2017,32(4):70-75. |
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| 作者姓名： | 哈尔滨工程大学 动力与能源工程学院 黑龙江 哈尔滨 |
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| 作者单位： | 为了克服在应用克里金估计方法中出现的主观偏差，提高在压气机特性重构研究中所使用模型的拟合及泛化精度，本研究以某型压气机的转速和效率作为随机变量，充分考虑已知样本数据的分布特点和空间相关性，应用交叉验证法对比分析了在不同样本容量下4种典型克里金方法在某型压气机特性重构中的拟合和泛化能力，实现了模型优选。应用优选出的克里金模型重构该压气机特性，预测结果可满足工程仿真需求，同时验证了小样本条件下应用转速变量和效率变量的协同估计，提高压气机特性重构精度的可行性。 |
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| 摘 要： | 为了克服在应用克里金估计方法中出现的主观偏差,提高在压气机特性重构研究中所使用模型的拟合及泛化精度,本研究以某型压气机的转速和效率作为随机变量,充分考虑已知样本数据的分布特点和空间相关性,应用交叉验证法对比分析了在不同样本容量下4种典型克里金方法在某型压气机特性重构中的拟合和泛化能力,实现了模型优选。应用优选出的克里金模型重构该压气机特性,预测结果可满足工程仿真需求,同时验证了小样本条件下应用转速变量和效率变量的协同估计,提高压气机特性重构精度的可行性。
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| 关 键 词： | 压气机特性 克里金方法 交叉验证法 |
Re-engineering Compressor Maps based on Selection and Assessment of Kriging Models |
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| College of Power and Energy Engineering,Harbin Engineering University.Re-engineering Compressor Maps based on Selection and Assessment of Kriging Models[J].Journal of Engineering for Thermal Energy and Power,2017,32(4):70-75. |
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| Authors: | College of Power and Energy Engineering Harbin Engineering University |
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| Affiliation: | In the application of Kriging method on the compressor performance map re-engineering,effectively avoiding the subjectivity in model selection stage and improving the fitting and generalization precisions is of importance.In this paper,with the rotating speed and efficiency of a compressor as random variables and the full consideration of the spatial correlation of known sample data,the fitting capability and generalization ability of four typical Kriging models in re-engineering the compressor maps were compared and analyzed with cross validation method under various sample sizes,and the model optimization was achieved.The application results of this optimized Kriging model showed it meets the engineering requirement,and further confirmed the feasibility of using the co-estimation based on the rotating speed and efficiency of compressor to improve the re-engineering accuracy of compressor performance map under a small sample size. |
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| Abstract: | |
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| Keywords: | compressor characteristics Kriging method cross validation |
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