In distributed fusion,when one or more sensors are disturbed by faults,a common problem is that their local estimations are inconsistent with those of other fault-free sensors.Most of the existing fault-tolerant distr...In distributed fusion,when one or more sensors are disturbed by faults,a common problem is that their local estimations are inconsistent with those of other fault-free sensors.Most of the existing fault-tolerant distributed fusion algorithms,such as the Covariance Union(CU)and Faulttolerant Generalized Convex Combination(FGCC),are only used for the point estimation case where local estimates and their associated error covariances are provided.A treatment with focus on the fault-tolerant distributed fusions of arbitrary local Probability Density Functions(PDFs)is lacking.For this problem,we first propose Kullback–Leibler Divergence(KLD)and reversed KLD induced functional Fuzzy c-Means(FCM)clustering algorithms to soft cluster all local PDFs,respectively.On this basis,two fault-tolerant distributed fusion algorithms of arbitrary local PDFs are then developed.They select the representing PDF of the cluster with the largest sum of memberships as the fused PDF.Numerical examples verify the better fault tolerance of the developed two distributed fusion algorithms.展开更多
模拟了劣质烟煤和无烟煤在1台300 MW四角切圆锅炉炉内分层混合燃烧的过程。模拟使用了两种方法:一种是双混合分数/PDF(Probability Density Function)方法,使用2种不同煤质特性的煤;另一种是单混合分数/PDF方法,将混煤当作一种单煤,使...模拟了劣质烟煤和无烟煤在1台300 MW四角切圆锅炉炉内分层混合燃烧的过程。模拟使用了两种方法:一种是双混合分数/PDF(Probability Density Function)方法,使用2种不同煤质特性的煤;另一种是单混合分数/PDF方法,将混煤当作一种单煤,使用质量加权平均的煤质特性进行计算。模拟及实际测量结果表明:在这种混烧方式下炉内温度及氧浓度分布呈现非均匀和对角对称的分布特征。双混合分数/PDF方法的模拟结果更符合混煤在炉内的实际燃烧过程。展开更多
基金supported in part by the Open Fund of Intelligent Control Laboratory,China(No.ICL-2023–0202)in part by National Key R&D Program of China(Nos.2021YFC2202600,2021YFC2202603)。
文摘In distributed fusion,when one or more sensors are disturbed by faults,a common problem is that their local estimations are inconsistent with those of other fault-free sensors.Most of the existing fault-tolerant distributed fusion algorithms,such as the Covariance Union(CU)and Faulttolerant Generalized Convex Combination(FGCC),are only used for the point estimation case where local estimates and their associated error covariances are provided.A treatment with focus on the fault-tolerant distributed fusions of arbitrary local Probability Density Functions(PDFs)is lacking.For this problem,we first propose Kullback–Leibler Divergence(KLD)and reversed KLD induced functional Fuzzy c-Means(FCM)clustering algorithms to soft cluster all local PDFs,respectively.On this basis,two fault-tolerant distributed fusion algorithms of arbitrary local PDFs are then developed.They select the representing PDF of the cluster with the largest sum of memberships as the fused PDF.Numerical examples verify the better fault tolerance of the developed two distributed fusion algorithms.
文摘模拟了劣质烟煤和无烟煤在1台300 MW四角切圆锅炉炉内分层混合燃烧的过程。模拟使用了两种方法:一种是双混合分数/PDF(Probability Density Function)方法,使用2种不同煤质特性的煤;另一种是单混合分数/PDF方法,将混煤当作一种单煤,使用质量加权平均的煤质特性进行计算。模拟及实际测量结果表明:在这种混烧方式下炉内温度及氧浓度分布呈现非均匀和对角对称的分布特征。双混合分数/PDF方法的模拟结果更符合混煤在炉内的实际燃烧过程。
