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1. 发明授权

US10203242B2 Method and a system for analysing the condition of a rotating machine part 有权
公开(公告)号：US10203242B2
公开(公告)日：2019-02-12
申请号：US14131731
申请日：2012-07-11
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G01H1/00 , G01M13/04 , G01N29/14 , G01N29/48 , G05B23/02 , F16C19/52
摘要： Method of operating an apparatus for analyzing the condition of a machine part rotating with a speed of rotation, includes: receiving a first digital signal dependent on mechanical vibrations emanating from the rotating part; analyzing the first digital signal to detect peak amplitude values during a finite time period corresponding to a predetermined amount of revolution of the rotatable part; the predetermined amount of revolution corresponding to at least one revolution of the monitored rotatable part; defining a plurality of amplitude ranges, each amplitude range corresponding to a peak occurrence frequency of more than one peak per revolution; sorting the detected peak amplitude values into corresponding amplitude ranges to reflect occurrence of detected peak amplitude values within the plurality of amplitude ranges; establishing a peak amplitude value for detected peaks having an occurrence frequency of about NL peaks per revolution, the occurrence frequency NL being a number higher than one.

2. 发明授权

US08810396B2 Analysis system 有权
标题翻译：分析系统
公开(公告)号：US08810396B2
公开(公告)日：2014-08-19
申请号：US13141407
申请日：2009-12-22
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G08B21/00
CPC分类号： G01H1/003 , G01M13/045
摘要： A method for analyzing the condition of a machine having a rotating shaft, includes:receiving a digital input signal (I) having a first plurality (ILENGTH) of sample values, the digital input signal (I) representing mechanical vibrations emanating from rotating the shaft so far as to cause occurrence of a vibration having a period of repetition (TR); dividing the received digital input signal (I) into a first signal portion (2070) and a second signal portion; generating a digital output signal (O) having a second plurality (OLENGTH) of samples, the second plurality (OLENGTH) being a positive integer and lower than the first plurality (ILENGTH); the digital output signal (O) being generated in response to the first signal portion (2070) and the second signal portion.
摘要翻译：一种用于分析具有旋转轴的机器的状况的方法，包括：接收具有第一多个（ILENGTH）样本值的数字输入信号（I），所述数字输入信号（I）表示从旋转轴发出的机械振动以致发生具有重复周期（TR）的振动; 将所接收的数字输入信号（I）分成第一信号部分（2070）和第二信号部分; 产生具有第二多个（OLENGTH）样本的数字输出信号（O），所述第二多个（OLENGTH）是正整数并且低于所述第一多个（ILENGTH）; 响应于第一信号部分（2070）和第二信号部分产生数字输出信号（O）。

3. 发明申请

US20110301872A1 ANALYSIS SYSTEM 有权
标题翻译：分析系统
公开(公告)号：US20110301872A1
公开(公告)日：2011-12-08
申请号：US13140280
申请日：2009-12-22
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G06F19/00 , G01N29/14
CPC分类号： G01H1/003
摘要： Method for analyzing the condition of a machine having a slowly rotating part, includes: rotating a rotatable part at a rotational speed of less than 50 rpm; generating an analogue electric measurement signal dependent on mechanical vibrations emanating from rotation of a shaft using a sensor having mechanical characteristics causing it to resonate at a certain resonance frequency; sampling the analogue measurement signal at a sampling frequency to generate a digital measurement data sequence in response to the received analogue measurement data; digitally filtering the digital measurement data sequence to obtain a filtered measurement signal and achieve a signal having a bandwidth between an upper and a lower frequency which is lower than the certain resonance frequency and the upper frequency being higher than the certain resonance frequency; generating a digitally enveloped signal in response to the filtered measurement signal by digitally rectifying the filtered measurement signal, and by digital low pass filtering of the rectified filtered measurement signal to generate the digitally enveloped signal; performing a condition analysis function for analysing the condition of the machine dependent on the digitally enveloped signal.
摘要翻译：用于分析具有缓慢旋转部分的机器的状况的方法包括：以小于50rpm的转速旋转可旋转部件; 产生取决于由轴的旋转产生的机械振动的模拟电测量信号，所述机械振动使用具有导致其以某一共振频率谐振的机械特性的传感器; 以采样频率对模拟测量信号进行采样，以响应于所接收的模拟测量数据产生数字测量数据序列; 对数字测量数据序列进行数字滤波以获得经过滤波的测量信号，并获得具有低于某一谐振频率的上和下频率之间的带宽和高于特定谐振频率的上限频率的信号; 通过对经过滤波的测量信号进行数字整流，并通过经整流的滤波测量信号的数字低通滤波来产生数字包络的信号，以产生数字包络的信号; 执行条件分析功能，用于分析取决于数字包络信号的机器的状况。

4. 发明授权

US08762104B2 Method and apparatus for analysing the condition of a machine having a rotating part 有权
标题翻译：用于分析具有旋转部件的机器的状态的方法和装置
公开(公告)号：US08762104B2
公开(公告)日：2014-06-24
申请号：US13141424
申请日：2009-12-22
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G06F15/00 , G01H17/00 , G01M13/04 , G01H1/00
CPC分类号： G05B19/4069 , G01H1/003 , G01H17/00 , G01M13/045 , G05B19/416 , G05B2219/37228 , G06F15/00
摘要： A method for analyzing a machine having a rotating shaft includes: generating an electric measurement signal dependent on vibrations emanating from the shaft; sampling the measurement signal at a sampling frequency to generate a digital measurement data signal; performing a decimation of the digital measurement data signal to achieve a digital signal having a reduced sampling frequency, the decimation including controlling the reduced sampling frequency such that the number of sample values per revolution of the shaft is kept at a substantially constant value; receiving the digital signal at an enhancer input; performing a correlation in the enhancer so as to produce an output signal sequence wherein repetitive signals amplitude components are amplified in relation to stochastic signal components; and performing a condition analysis function for analyzing the condition of the machine dependent on the digital signal having a reduced sampling frequency.
摘要翻译：一种用于分析具有旋转轴的机器的方法包括：产生取决于从轴发出的振动的电测量信号; 以采样频率采样测量信号以产生数字测量数据信号; 执行数字测量数据信号的抽取以实现具有降低的采样频率的数字信号，该抽取包括控制降低的采样频率，使得每转的采样值的数量保持在基本上恒定的值; 在增强器输入端接收数字信号; 在所述增强器中执行相关，以产生其中重复信号幅度分量相对于随机信号分量被放大的输出信号序列; 以及执行条件分析功能，用于根据具有降低的采样频率的数字信号来分析机器的状况。

5. 发明申请

US20110285532A1 ANALYSIS SYSTEM 有权
标题翻译：分析系统
公开(公告)号：US20110285532A1
公开(公告)日：2011-11-24
申请号：US13141407
申请日：2009-12-22
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G08B21/00 , G06F19/00 , G01N29/14
CPC分类号： G01H1/003 , G01M13/045
摘要： A method for analyzing the condition of a machine having a rotating shaft, includes: receiving a digital input signal (I) having a first plurality (ILENGTH) of sample values, the digital input signal (I) representing mechanical vibrations emanating from rotating the shaft so far as to cause occurrence of a vibration having a period of repetition (TR); dividing the received digital input signal (I) into a first signal portion (2070) and a second signal portion; generating a digital output signal (O) having a second plurality (OLENGTH) of samples, the second plurality (OLENGTH) being a positive integer and lower than the first plurality (ILENGTH); the digital output signal (O) being generated in response to the first signal portion (2070) and the second signal portion.
摘要翻译：一种用于分析具有旋转轴的机器的状况的方法，包括：接收具有第一多个（ILENGTH）样本值的数字输入信号（I），所述数字输入信号（I）表示从旋转轴发出的机械振动以致发生具有重复周期（TR）的振动; 将所接收的数字输入信号（I）分成第一信号部分（2070）和第二信号部分; 产生具有第二多个（OLENGTH）样本的数字输出信号（O），所述第二多个（OLENGTH）是正整数并且低于所述第一多个（ILENGTH）; 响应于第一信号部分（2070）和第二信号部分产生数字输出信号（O）。

6. 发明授权

US09304033B2 Analysis system 有权
标题翻译：分析系统
公开(公告)号：US09304033B2
公开(公告)日：2016-04-05
申请号：US13140280
申请日：2009-12-22
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G01H1/00
CPC分类号： G01H1/003
摘要： Method for analyzing the condition of a machine having a slowly rotating part, includes: rotating a rotatable part at a rotational speed of less than 50 rpm; generating an analogue electric measurement signal dependent on mechanical vibrations emanating from rotation of a shaft using a sensor having mechanical characteristics causing it to resonate at a certain resonance frequency; sampling the analogue measurement signal at a sampling frequency to generate a digital measurement data sequence in response to the received analogue measurement data; digitally filtering the digital measurement data sequence to obtain a filtered measurement signal and achieve a signal having a bandwidth between an upper and a lower frequency which is lower than the certain resonance frequency and the upper frequency being higher than the certain resonance frequency; generating a digitally enveloped signal in response to the filtered measurement signal by digitally rectifying the filtered measurement signal, and by digital low pass filtering of the rectified filtered measurement signal to generate the digitally enveloped signal; performing a condition analysis function for analyzing the condition of the machine dependent on the digitally enveloped signal.
摘要翻译：用于分析具有缓慢旋转部分的机器的状况的方法包括：以小于50rpm的转速旋转可旋转部件; 产生取决于由轴的旋转产生的机械振动的模拟电测量信号，所述机械振动使用具有导致其以某一共振频率谐振的机械特性的传感器; 以采样频率对模拟测量信号进行采样，以响应于所接收的模拟测量数据产生数字测量数据序列; 对数字测量数据序列进行数字滤波以获得经滤波的测量信号，并获得具有低于特定谐振频率的上和下频率之间的带宽的信号，并且上限频率高于该特定谐振频率; 通过对经过滤波的测量信号进行数字整流，并通过经整流的滤波测量信号的数字低通滤波来产生数字包络的信号，以产生数字包络的信号; 执行条件分析功能，用于分析取决于数字包络信号的机器的状况。

7. 发明授权

US08812265B2 Analysis system 有权
标题翻译：分析系统
公开(公告)号：US08812265B2
公开(公告)日：2014-08-19
申请号：US13141399
申请日：2009-12-22
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G06F19/00 , G06F11/30
CPC分类号： G01M13/028 , G01H1/003 , G01M13/045 , G01M99/005 , G01M99/008
摘要： A method for analyzing the condition of a machine having a rotating shaft, including: generating an analog electric measurement signal (SEA) dependent on mechanical vibrations emanating from rotation of the shaft; sampling the analog measurement signal at a sampling frequency (fS) so as to generate a digital measurement data signal (SMD) in response to the received analog measurement data; performing a decimation of the digital measurement data signal (SMD) so as to achieve a digital signal (SRED) having a reduced sampling frequency (fSR1, fSR2); wherein the decimation includes the step of controlling the reduced sampling frequency (fSR1, fSR2) such that the number of sample values per revolution of the shaft (8) is kept at a substantially constant value; and performing a condition analysis function (F1, F2, Fn) for analyzing the condition of the machine dependent on the digital signal (SRED) having a reduced sampling frequency (fSR1, fSR2).
摘要翻译：一种用于分析具有旋转轴的机器的状态的方法，包括：产生取决于从所述轴的旋转发出的机械振动的模拟电测量信号（SEA）以采样频率（fS）对模拟测量信号进行采样，以响应于所接收的模拟测量数据产生数字测量数据信号（SMD）; 执行数字测量数据信号（SMD）的抽取，以实现具有降低的采样频率（fSR1，fSR2）的数字信号（SRED）; 其中所述抽取包括控制所述降低的采样频率（fSR1，fSR2）的步骤，使得所述轴（8）每转的采样值的数量保持在基本恒定的值; 以及根据具有降低的采样频率（fSR1，fSR2）的数字信号（SRED）来执行用于分析机器的状况的条件分析功能（F1，F2，Fn）。

8. 发明申请

US20120072136A1 APPARATUS AND A METHOD FOR ANALYSING THE VIBRATION OF A MACHINE HAVING A ROTATING PART 有权
标题翻译：装置和分析旋转部件机械振动的方法
公开(公告)号：US20120072136A1
公开(公告)日：2012-03-22
申请号：US13258729
申请日：2010-02-26
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G06F19/00
CPC分类号： G01H1/003
摘要： An apparatus for analyzing the condition of a machine having a part rotatable with a speed of rotation, includes an input for receiving an analogue measurement signal indicative of a vibration signal signature having a vibration frequency and a repetition frequency; an A/D converter for generating a digital measurement signal dependent on the analogue measurement signal, the digital measurement signal having a first sample rate, which is at least twice the vibration frequency; an enveloper for generating an enveloped signal indicative of the repetition frequency; a decimator for generating a decimated first digital signal dependent on the enveloped signal such that the decimated first digital signal has a reduced sample rate; an enhancer having an input for receiving the decimated signal, wherein the enhancer operates in the time domain to perform discrete autocorrelation for the decimated first digital signal so as to generate an enhancer output signal sequence; and an analyzer for performing a condition monitoring function so as to analyze the condition of the machine dependent on the output signal sequence.
摘要翻译：一种用于分析具有以旋转速度旋转的部分的机器的状态的装置，包括用于接收指示具有振动频率和重复频率的振动信号特征的模拟测量信号的输入; A / D转换器，用于根据所述模拟测量信号产生数字测量信号，所述数字测量信号具有至少两倍于所述振动频率的第一采样率; 用于产生指示所述重复频率的包络信号的加热器; 抽取器，用于根据所包封的信号产生抽取的第一数字信号，使得抽取的第一数字信号具有降低的采样率; 具有用于接收抽取信号的输入的增强器，其中所述增强器在时域中操作以对所抽取的第一数字信号执行离散自相关，以便产生增强器输出信号序列; 以及分析器，用于执行状态监视功能，以便根据输出信号序列分析机器的状况。

9. 发明申请

US20110295557A1 ANALYSIS SYSTEM 有权
标题翻译：分析系统
公开(公告)号：US20110295557A1
公开(公告)日：2011-12-01
申请号：US13141399
申请日：2009-12-22
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G06F15/00
CPC分类号： G01M13/028 , G01H1/003 , G01M13/045 , G01M99/005 , G01M99/008
摘要： A method for analyzing the condition of a machine having a rotating shaft, including: generating an analogue electric measurement signal (SEA) dependent on mechanical vibrations emanating from rotation of the shaft; sampling the analogue measurement signal at a sampling frequency (fS) so as to generate a digital measurement data signal (SMD) in response to the received analogue measurement data; performing a decimation of the digital measurement data signal (SMD) so as to achieve a digital signal (SRED) having a reduced sampling frequency (fSR1, fSR2); wherein the decimation includes the step of controlling the reduced sampling frequency (fSR1, fSR2) such that the number of sample values per revolution of the shaft (8) is kept at a substantially constant value; and performing a condition analysis function (F1, F2, Fn) for analyzing the condition of the machine dependent on the digital signal (SRED) having a reduced sampling frequency (fSR1, fSR2).
摘要翻译：一种用于分析具有旋转轴的机器的状态的方法，包括：产生取决于从所述轴的旋转产生的机械振动的模拟电测量信号（SEA）; 以采样频率（fS）对模拟测量信号进行采样，以响应于所接收的模拟测量数据产生数字测量数据信号（SMD）; 执行数字测量数据信号（SMD）的抽取，以实现具有降低的采样频率（fSR1，fSR2）的数字信号（SRED）; 其中所述抽取包括控制所述降低的采样频率（fSR1，fSR2）的步骤，使得所述轴（8）每转的采样值的数量保持在基本恒定的值; 以及根据具有降低的采样频率（fSR1，fSR2）的数字信号（SRED）来执行用于分析机器的状况的条件分析功能（F1，F2，Fn）。

10. 发明授权

US09964430B2 Apparatus and a method for analyzing the vibration of a machine having a rotating part 有权
公开(公告)号：US09964430B2
公开(公告)日：2018-05-08
申请号：US13258729
申请日：2010-02-26
申请人： Lars-Olov Elis Hedin
发明人： Lars-Olov Elis Hedin
IPC分类号： G01H1/00
CPC分类号： G01H1/003
摘要： An apparatus for analyzing the condition of a machine having a part rotatable with a speed of rotation, includes an input for receiving an analog measurement signal indicative of a vibration signal signature having a vibration frequency and a repetition frequency; an A/D converter for generating a digital measurement signal dependent on the analog measurement signal, the digital measurement signal having a first sample rate, which is at least twice the vibration frequency; an enveloper for generating an enveloped signal indicative of the repetition frequency; a decimator for generating a decimated first digital signal dependent on the enveloped signal such that the decimated first digital signal has a reduced sample rate; an enhancer having an input for receiving the decimated signal, wherein the enhancer operates in the time domain to perform discrete autocorrelation for the decimated first digital signal so as to generate an enhancer output signal sequence; and an analyzer for performing a condition monitoring function so as to analyze the condition of the machine dependent on the output signal sequence.

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