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公开(公告)号：US08174402B2
公开(公告)日：2012-05-08
申请号：US12013166
申请日：2008-01-11
申请人： Kai Bouse , Stewart V. Bowers, III , Jim Robinson , Richard Piety , Todd Reeves
发明人： Kai Bouse , Stewart V. Bowers, III , Jim Robinson , Richard Piety , Todd Reeves
CPC分类号： G05B23/0232 , G05B19/4065 , G05B2219/31467 , G05B2219/32297
摘要： A machine condition monitor resides in close proximity to a machine train, such as an AC inductive electric motor coupled to a driven unit such as a centrifugal pump or fan. A plurality of sensing devices are connected to the machine and the machine condition monitor. Machine state and condition parameters sensed by these devices are utilized by the machine condition monitor to derive machine condition values for each component and for the machine train as a whole. These derived condition values are transmitted via an industrial communications network to a control center where they can be trended and monitored. With no particular knowledge of machine analysis techniques or severity of specific machine faults, and no special training, Operators and Production Planners can use the condition values to plan production schedules, adjust process parameters, and request appropriate maintenance action.
摘要翻译： 机器状态监视器靠近机器列车，例如耦合到诸如离心泵或风扇的从动单元的AC感应电动机。 多个感测装置连接到机器和机器状态监视器。 由机器状态监视器利用这些装置感测到的机器状态和状态参数来导出每个部件和整个机器列车的机器状态值。 这些派生条件值通过工业通信网络传输到控制中心，在这些控制中心可以对其进行趋势和监测。 没有特别了解机器分析技术或特定机器故障的严重性，无需特殊培训，操作员和生产计划人员可以使用条件值来计划生产计划，调整过程参数，并请求适当的维护操作。
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2.发明授权System and method for measuring and analyzing electrical signals on the shaft of a machine 失效用于测量和分析机器轴上电信号的系统和方法
公开(公告)号：US6091236A
公开(公告)日：2000-07-18
申请号：US842096
申请日：1997-04-28
CPC分类号： G01R31/343
摘要： The present invention provides a system and method for monitoring an electrical signal appearing on a rotating machine shaft. The system comprises a probe assembly for placement against the rotating machine shaft that is in electrically conductive contact with the shaft. The probe assembly includes at least one circuit for receiving the electrical signal from the rotating machine shaft and producing various electrical signals that are read by a data processing system, which is coupled to the circuit. The data processing system determines from the electrical signal obtained from the circuit, the RMS AC voltage, DC voltage, peak voltage, and the RMS AC and DC current through two different resisters that are all appearing on the rotating machine shaft. The data processing system also performs Fast Fourier Transforms on the RMS voltage and current signals and produces a frequency spectrum over time.
摘要翻译： 本发明提供一种用于监测出现在旋转机器轴上的电信号的系统和方法。 该系统包括探针组件，其用于与旋转的机器轴放置，该旋转机械轴与轴导电接触。 探针组件包括至少一个电路，用于接收来自旋转机器轴的电信号，并产生由耦合到该电路的数据处理系统读取的各种电信号。 数据处理系统根据从电路获得的电信号，RMS交流电压，直流电压，峰值电压以及通过旋转机器轴上出现的两个不同电阻器的RMS交流和直流电流来确定。 数据处理系统还对RMS电压和电流信号执行快速傅里叶变换，并随时间产生频谱。
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公开(公告)号：US5249138A
公开(公告)日：1993-09-28
申请号：US638747
申请日：1991-01-07
IPC分类号： G05B19/4065 , G08C19/02
CPC分类号： G08C19/02 , G05B19/4065 , G05B2219/37493 , G05B2219/37498
摘要： The specification describes a system for analyzing and processing an input analog signal. This invention provides an analog signal preprocessor which is operated in conjunction with a main instrument for measuring any defects or wear of machinery parts. The analog signal preprocessor operates to preprocess an analog signal by filtering and amplifying a signal from the analog signal to allow a more accurate reading by the main instrument. The preprocessor will adjust itself for optimum operation and communicate the operation modes to the main instrument. Also, the preprocessor can be addressed by the main instrument to setup the operation of the preprocessor according to a program or input entered into the main instrument.
摘要翻译： 本说明书描述了一种用于分析和处理输入模拟信号的系统。 本发明提供了一种模拟信号预处理器，其与用于测量机械部件的任何缺陷或磨损的主仪器结合操作。 模拟信号预处理器通过对来自模拟信号的信号进行滤波和放大来对模拟信号进行预处理，以允许主仪器更准确的读取。 预处理器将调整自身以获得最佳操作，并将操作模式传达到主仪器。 此外，预处理器可以由主仪器寻址，以根据输入到主仪器中的程序或输入来设置预处理器的操作。
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4.发明授权Proactive motor monitoring for avoiding premature failures and for fault recognition 失效主动电机监控，以避免过早故障和故障识别
公开(公告)号：US5680025A
公开(公告)日：1997-10-21
申请号：US320152
申请日：1994-10-07
CPC分类号： G01R31/343
摘要： Apparatus which automates the collection of motor temperature, flux and shaft current data for proactive motor maintenance. Motor speed is determined by an analysis of the flux frequency spectrum, and motor load is determined based on speed, from which a normalized thermal parameter is then determined. From a spectrum analysis of magnetic flux signals a set of peaks each characterized by a frequency and an amplitude is found, and a subset of peaks is identified in accordance with predetermined identity criteria for purposes of comparison. Temperature, magnetic flux and shaft current data are trended to provide early indications of degradation, as well as for recognizing faults.
摘要翻译： 用于自动收集电机温度，磁通和轴电流数据的装置，用于主动电机维护。 电机速度由通量频谱分析确定，电机负载根据速度确定，然后确定归一化热参数。 从磁通量信号的频谱分析中，发现以频率和幅度为特征的一组峰，并且为了比较的目的，根据预定的身份标准来识别峰的子集。 温度，磁通量和轴电流数据趋向于提供降解的早期指示，以及识别故障。
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公开(公告)号：US5530343A
公开(公告)日：1996-06-25
申请号：US320151
申请日：1994-10-07
CPC分类号： G01P3/48
摘要： Apparatus for determining the rotational speed of an AC induction motor based on a spectrum analysis of a magnetic flux signal. For a Phase I analysis, which is usually sufficient, three sets of families of peaks indicative of possible rotational speeds are defined, and the flux frequency spectrum is searched for peaks meeting the family definitions to determine candidate speeds, and to assign scores. If there is a candidate speed with an overall score which exceeds a predetermined threshold, the motor rotational speed is determined as that candidate speed. A Phase II analysis, employing a more exhaustive set of five additional family definitions, is applied when Phase I fails to reach a result.
摘要翻译： 用于基于磁通量信号的频谱分析确定AC感应电动机的转速的装置。 对于通常足够的阶段I分析，定义了三组表示可能的转速的峰族，并且搜索通量频谱以满足族定义的峰以确定候选速度并分配分数。 如果存在总分超过预定阈值的候选速度，则将电动机转速确定为该候选速度。 当第一阶段未能达成结果时，应用第二阶段分析，采用更详尽的五组附加家庭定义。
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