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公开(公告)号：US10288548B2
公开(公告)日：2019-05-14
申请号：US14689467
申请日：2015-04-17
Applicant: Hamilton Sundstrand Corporation
Inventor： Andre A. Silva , Nayeff A. Najjar , Shalabh Gupta , Paul M. D'Orlando , Rhonda Dawn Walthall
Abstract: A method and apparatus for estimating a fouling state of a heat exchanger of an aircraft. Training sensor measurements are obtained of a parameter related to operation of the heat exchanger and a wavelet transform is applied to the training sensor measurements to obtain wavelet data. Data reduction is performed on the wavelet data to obtain representative features indicative of the training sensor measurements. A classifier is then trained to assign suitable fouling classes to the representative features. The trained classifier is used on testing sensor measurements from the heat exchanger to assign a fouling class to the testing sensor measurements in order to estimate the fouling state of the heat exchanger.
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公开(公告)号：US10089204B2
公开(公告)日：2018-10-02
申请号：US14687112
申请日：2015-04-15
Inventor： James Z. Hare , Shalabh Gupta , Nayeff A. Najjar , Paul M. D'Orlando , Rhonda Dawn Walthall
Abstract: A hierarchical fault detection and isolation system, method, and/or computer program product that facilitates fault detection and isolation in a complex networked system while reducing the computational complexity and false alarms is provided. The system, method, and/or computer program product utilizes a system level isolation and detection algorithm and a diagnostic tree to systematically isolate faulty sub-systems, components, etc. of the complex networked system.
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3.发明申请公开(公告)号：US20160306725A1
公开(公告)日：2016-10-20
申请号：US14687112
申请日：2015-04-15
Inventor： James Z. Hare , Shalabh Gupta , Nayeff A. Najjar , Paul M. D'Orlando , Rhonda Dawn Walthall
CPC classification number: G06F11/2263 , G06F11/07 , G06F11/3013 , G06F11/3058
Abstract: A hierarchical fault detection and isolation system, method, and/or computer program product that facilitates fault detection and isolation in a complex networked system while reducing the computational complexity and false alarms is provided. The system, method, and/or computer program product utilizes a system level isolation and detection algorithm and a diagnostic tree to systematically isolate faulty sub-systems, components, etc. of the complex networked system.
Abstract translation: 提供了一种分层故障检测和隔离系统，方法和/或计算机程序产品，其在减少计算复杂性和虚假警报的同时便于复杂网络系统中的故障检测和隔离。 系统，方法和/或计算机程序产品利用系统级隔离和检测算法和诊断树来系统地隔离复杂网络系统的故障子系统，组件等。
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4.发明申请公开(公告)号：US20160305865A1
公开(公告)日：2016-10-20
申请号：US14689467
申请日：2015-04-17
Applicant: Hamilton Sundstrand Corporation
Inventor： Andre A. Silva , Nayeff A. Najjar , Shalabh Gupta , Paul M. D'Orlando , Rhonda Dawn Walthall
CPC classification number: G01N17/008 , F28F27/00
Abstract: A method and apparatus for estimating a fouling state of a heat exchanger of an aircraft. Training sensor measurements are obtained of a parameter related to operation of the heat exchanger and a wavelet transform is applied to the training sensor measurements to obtain wavelet data. Data reduction is performed on the wavelet data to obtain representative features indicative of the training sensor measurements. A classifier is then trained to assign suitable fouling classes to the representative features. The trained classifier is used on testing sensor measurements from the heat exchanger to assign a fouling class to the testing sensor measurements in order to estimate the fouling state of the heat exchanger.
Abstract translation: 一种用于估计飞行器的热交换器的结垢状态的方法和装置。 获得与热交换器操作有关的参数的训练传感器测量，并将小波变换应用于训练传感器测量以获得小波数据。 对小波数据执行数据减少以获得指示训练传感器测量的代表性特征。 然后对分类器进行培训，以便为代表性特征分配合适的污垢等级。 经过训练的分级器用于测试来自热交换器的传感器测量，以将污垢等级分配给测试传感器测量值，以便估计热交换器的结垢状态。
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