Method and apparatus for in-situ detection and isolation of aircraft engine faults
    21.
    发明授权
    Method and apparatus for in-situ detection and isolation of aircraft engine faults 有权
    用于原位检测和分离飞机发动机故障的方法和装置

    公开(公告)号:US07280941B2

    公开(公告)日:2007-10-09

    申请号:US11025145

    申请日:2004-12-29

    IPC分类号: G06F15/00 G05B13/02

    CPC分类号: G05B23/0254 G05B23/0281

    摘要: A method for performing a fault estimation based on residuals of detected signals includes determining an operating regime based on a plurality of parameters, extracting predetermined noise standard deviations of the residuals corresponding to the operating regime and scaling the residuals, calculating a magnitude of a measurement vector of the scaled residuals and comparing the magnitude to a decision threshold value, extracting an average, or mean direction and a fault level mapping for each of a plurality of fault types, based on the operating regime, calculating a projection of the measurement vector onto the average direction of each of the plurality of fault types, determining a fault type based on which projection is maximum, and mapping the projection to a continuous-valued fault level using a lookup table.

    摘要翻译: 基于检测到的信号的残差执行故障估计的方法包括基于多个参数来确定操作状态,提取对应于操作状态的残差的预定噪声标准偏差并缩放残差,计算测量矢量的大小 并且将所述幅度与判定阈值进行比较,基于所述操作状态来提取所述多个故障类型中的每一个的平均方向和平均方向以及故障水平映射,计算所述测量向量到 多个故障类型中的每一个的平均方向,基于哪个投影是最大的确定故障类型,以及使用查找表将投影映射到连续值故障级别。

    Long reach welding torch and method for selecting torch shape

    公开(公告)号:US06515258B2

    公开(公告)日:2003-02-04

    申请号:US09794932

    申请日:2001-02-28

    IPC分类号: B23K900

    CPC分类号: B23K9/127

    摘要: Shape of a long reach device, e.g., a welding torch, suitable for use within a portion of an object along a joint curve, e.g., a weld joint, is determined by dissecting the long reach device into a discrete number of portions, identifying ranges of movement between each of the portions, and discretizing the ranges of movement into a predetermined number of intervals. A total number of possible shapes is determined based on the total portions of the long reach device having the first movement range discretized into a predetermined number of intervals. A representation of the long reach device having one of the possible shapes is compared with the representation of the portion of the object. A possible shape is deemed acceptable if less than a predetermined portion of the representation of the long reach device interferes with the representation

    Method for estimating the precise orientation of a satellite-borne
phased array antenna and bearing of a remote receiver
    23.
    发明授权
    Method for estimating the precise orientation of a satellite-borne phased array antenna and bearing of a remote receiver 失效
    用于估计卫星相控阵天线和远程接收机的方位的精确方向的方法

    公开(公告)号:US5812084A

    公开(公告)日:1998-09-22

    申请号:US768005

    申请日:1996-12-13

    CPC分类号: H01Q21/00 H01Q3/26

    摘要: The precise three-axis attitude of a space-borne phases-array antenna is estimated based on the assumption that the array geometry, consisting of the number of radiating elements and their relative spacing in three dimensions, is known and that the array position and coarse knowledge of the array attitude are available a priori. An estimate is first made of the set of complex-valued gains that define each element's straight-through contribution to the signals received at each of two or more remote calibration sites, where a "straight-through" antenna configuration is defined as the condition in which all elements are made to radiate with the same amplitude and phase. An optimization strategy is then used to determine which array attitude lying in the neighborhood of the coarsely known attitude is most consistent with the full set of straight-through gain values. Another technique for estimating the precise angular location of a receiver with respect to the coordinates of the space-borne phased-array antenna is based on the assumptions that the array geometry is known, and that the receiver bearing is coarsely known or available. After an estimate is made of the set of complex-valued gains that define each element's straight-through contribution to a composite signal measured at the receiver site, an optimization strategy is used to determine which receiver direction lying in the neighborhood of the coarsely known direction is most consistent with the latter set of straight-through gain values.

    摘要翻译: 基于以下假设估计空间相位阵列天线的精确三轴姿态:由辐射元件的数量及其在三维中的相对间隔组成的阵列几何形状是已知的,并且阵列位置和粗糙度 阵列态度的知识是先验的。 首先估计一组复值增益,其定义每个元件对两个或更多个远程校准位置中的每一个处接收到的信号的直通贡献,其中“直通”天线配置被定义为 所有元素都以相同的幅度和相位辐射。 然后使用优化策略来确定位于粗略知道姿态附近的哪个阵列姿态与整个直通增益值最一致。 用于估计接收机相对于空间相控阵天线的坐标的精确角位置的另一技术是基于阵列几何形状已知的假设,并且接收器轴承是粗略已知的或可用的。 在估计定义每个元素对在接收站点测量的复合信号的直通贡献的复值增益的集合之后,使用优化策略来确定位于粗略已知方向附近的哪个接收机方向 与后一组直通增益值最一致。

    Photodiode array for analysis of multi-burner gas combustors
    24.
    发明授权
    Photodiode array for analysis of multi-burner gas combustors 失效
    用于分析多燃烧器气体燃烧器的光电二极管阵列

    公开(公告)号:US5755819A

    公开(公告)日:1998-05-26

    申请号:US656003

    申请日:1996-05-24

    IPC分类号: F23N5/08

    CPC分类号: F23N5/082 F23N2037/02

    摘要: A detection system includes flame sources at least two of which are independently controllable; photodetectors each having an independent view of the flame sources and being capable of producing a respective current signal in response to flames produced by the flame sources; and a device for analyzing the current signals to determine state values of a plurality of state variables and transform the state values into at least one parameter value. A number of the flame sources is at least as high as a number of the state variables, and a number of the photodetectors is at least as high as the number of the state variables. In one embodiment, the flame sources include gas burners in a gas combustion chamber, the photodetectors include silicon carbide photodiodes, and the parameter value is representative of fuel rate, temperature, acoustic dynamics, nitrogen oxide concentration, or carbon monoxide concentration. The device for analyzing the current signals can include means for mapping each of the current signals with respect to the state variables and inversely mapping the current signals and the state variables to determine the dependence of each of the state variables with respect to the current signals.

    摘要翻译: 检测系统包括其中至少两个独立可控的火焰源; 每个光电检测器具有独立的火焰源视图并且能够响应于由火焰源产生的火焰产生相应的电流信号; 以及用于分析当前信号以确定多个状态变量的状态值并将状态值变换为至少一个参数值的装置。 许多火焰源至少与状态变量的数量一样高,并且多个光电检测器至少与状态变量的数量一样高。 在一个实施例中,火焰源包括气体燃烧室中的气体燃烧器,光电检测器包括碳化硅光电二极管,参数值代表燃料速率,温度,声学动力学,氮氧化物浓度或一氧化碳浓度。 用于分析当前信号的装置可以包括用于映射相对于状态变量的每个当前信号的装置,并且反映映射当前信号和状态变量以确定每个状态变量相对于当前信号的依赖性。

    System and method for generating a route navigation database
    25.
    发明授权
    System and method for generating a route navigation database 有权
    用于生成路线导航数据库的系统和方法

    公开(公告)号:US08521344B2

    公开(公告)日:2013-08-27

    申请号:US12248180

    申请日:2008-10-09

    CPC分类号: B61L25/025 B61L2205/04

    摘要: A computer-readable storage medium having stored thereon a computer program including instructions, which, when executed by a computer, cause the computer to acquire route data in a first format for a route, the route data comprising a plurality of route parameters for a plurality of route locations. The computer is further programmed to re-format the acquired route data in the first format into a second format different from the first format, filter the reformatted route data into a route dataset having a lesser number of route locations than the number of route locations in the acquired route data, and to store the route dataset in computer memory.

    摘要翻译: 一种计算机可读存储介质,其上存储有包括指令的计算机程序,所述指令当由计算机执行时使得所述计算机以路由的第一格式获取路由数据,所述路由数据包括用于多个的多个路由参数 的路线位置。 该计算机还被编程为将所获取的第一格式的路由数据重新格式化为与第一格式不同的第二格式,将重新格式化的路由数据过滤到具有比路由位置数少的路由数据集 获取的路由数据,并将路由数据集存储在计算机存储器中。

    REPLICATION AND FORMATTING METHOD AND SYSTEM FOR BIT-WISE HOLOGRAPHIC STORAGE
    26.
    发明申请
    REPLICATION AND FORMATTING METHOD AND SYSTEM FOR BIT-WISE HOLOGRAPHIC STORAGE 有权
    用于双面全息存储的复制和格式化方法和系统

    公开(公告)号:US20120092980A1

    公开(公告)日:2012-04-19

    申请号:US12907824

    申请日:2010-10-19

    IPC分类号: G11B7/00 G11B7/26

    CPC分类号: G11B7/083 G11B7/28

    摘要: The present techniques provide methods and systems for recording micro-holograms on a holographic disk using a plurality of counter-propagating light beams in parallel. The parallel counter-propagating light beams overlap to form interference patterns on a data layer and over multiple data tracks in the holographic disk. Rotating the disk enables the parallel recording of micro-holograms over multiple data tracks, thus reducing recording time. Further, the illumination pattern may include illuminated spots and non-illuminated regions, such that each illumination spot may cover a relatively small fraction of the data layer plane, possibly controlling the depth spread of the recorded micro-hologram. In some embodiments, data in the parallel signal beams may be retrieved from a master holographic disk or may be modulated into the parallel signal beams.

    摘要翻译: 本技术提供了使用并行的多个反向传播光束在全息光盘上记录微全息图的方法和系统。 平行的反向传播光束重叠以在数据层上和全息光盘中的多个数据轨道上形成干涉图案。 旋转磁盘能够在多个数据磁道上并行记录微全息图,从而减少记录时间。 此外,照明图案可以包括照明点和非照明区域,使得每个照明点可以覆盖数据层平面的相对小部分,可能控制记录的微全息图的深度扩展。 在一些实施例中,并行信号光束中的数据可以从主全息光盘检索,或者可以被调制成并行信号光束。

    Servoing system for multiple spot registration for holographic replication system
    27.
    发明授权
    Servoing system for multiple spot registration for holographic replication system 有权
    全息复制系统多点注册伺服系统

    公开(公告)号:US08154975B1

    公开(公告)日:2012-04-10

    申请号:US12949621

    申请日:2010-11-18

    IPC分类号: G11B7/00

    摘要: The present techniques provide methods and systems for controlling the recording of micro-holograms using multiple counter-propagating light beams over multiple data tracks of a holographic disk. Imperfections in a holographic disk or movement of the disk during a recording process may cause signal beams to deviate from target data tracks. In some embodiments, a tracking beam is directed to a reference layer in the disk. Deviation of the reference beam from a target groove in the reference layer may be indicative of tracking errors. A detector may detect reflections of the tracking beam and generate an error signal in response to detected tracking errors. Servo-mechanical devices may actuate (e.g., radially, tangentially, or axially translate, rotate, and/or tilt) one or more optical components through which the counter-propagating light beams are emitted to compensate for tracking errors.

    摘要翻译: 本技术提供了使用在全息盘的多个数据轨道上使用多个反向传播光束来控制微全息图的记录的方法和系统。 在记录过程中,全息盘中的缺陷或磁盘的运动可能导致信号光束偏离目标数据磁道。 在一些实施例中,跟踪光束被引导到盘中的参考层。 参考光束与参考层中目标凹槽的偏差可能表示跟踪误差。 检测器可以检测跟踪光束的反射并且响应于检测到的跟踪误差而产生误差信号。 伺服机械装置可以致动(例如,径向,切向或轴向平移,旋转和/或倾斜)一个或多个光学部件,通过该光学部件发射反向传播的光束以补偿跟踪误差。

    Hot rail wheel bearing detection system and method
    28.
    发明授权
    Hot rail wheel bearing detection system and method 有权
    热轨车轮轴承检测系统及方法

    公开(公告)号:US07845596B2

    公开(公告)日:2010-12-07

    申请号:US12122583

    申请日:2008-05-16

    IPC分类号: B61K9/00

    CPC分类号: B61K9/04

    摘要: A system for detecting a hot surface is provided. The system includes a sensor for sensing an infrared radiation radiating from the hot surface and a high pass filter to eliminate low frequency components from the sensor signal. The system also includes an absolute value module to compute absolute values of a filtered signal, a first comparator to compare output of the absolute value module to a first threshold and a peak detector to report a peak value of the sensor signal's output. The system further includes a second comparator to compare output of peak detector to a second threshold.

    摘要翻译: 提供一种用于检测热表面的系统。 该系统包括用于感测从热表面辐射的红外辐射的传感器和用于从传感器信号中消除低频分量的高通滤波器。 该系统还包括绝对值模块来计算滤波信号的绝对值,将绝对值模块的输出与第一阈值进行比较的第一比较器和用于报告传感器信号输出的峰值的峰值检测器。 该系统还包括第二比较器,用于将峰值检测器的输出与第二阈值进行比较。

    SYSTEM AND METHOD FOR GENERATING A ROUTE NAVIGATION DATABASE
    29.
    发明申请
    SYSTEM AND METHOD FOR GENERATING A ROUTE NAVIGATION DATABASE 有权
    用于生成路由导航数据库的系统和方法

    公开(公告)号:US20100094551A1

    公开(公告)日:2010-04-15

    申请号:US12248180

    申请日:2008-10-09

    IPC分类号: G01C21/34 G01C21/30 G05D1/02

    CPC分类号: B61L25/025 B61L2205/04

    摘要: A computer-readable storage medium having stored thereon a computer program including instructions, which, when executed by a computer, cause the computer to acquire route data in a first format for a route, the route data comprising a plurality of route parameters for a plurality of route locations. The computer is further programmed to re-format the acquired route data in the first format into a second format different from the first format, filter the reformatted route data into a route dataset having a lesser number of route locations than the number of route locations in the acquired route data, and to store the route dataset in computer memory.

    摘要翻译: 一种计算机可读存储介质,其上存储有包括指令的计算机程序,所述指令当由计算机执行时使得所述计算机以路由的第一格式获取路由数据,所述路由数据包括用于多个的多个路由参数 的路线位置。 该计算机还被编程为将所获取的第一格式的路由数据重新格式化为与第一格式不同的第二格式,将重新格式化的路由数据过滤到具有比路由位置数少的路由数据集 获取的路由数据,并将路由数据集存储在计算机存储器中。