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1. 发明申请

US20220003595A1 APPARATUS FOR MONITORING THE CONDITION OF A MACHINE 有权
公开(公告)号：US20220003595A1
公开(公告)日：2022-01-06
申请号：US17238038
申请日：2021-04-22
申请人： S.P.M. Instrument AB
发明人： Lars-Olov Elis Hedin
IPC分类号： G01H1/00 , G01M13/045 , G01M13/028 , G05B19/4069 , G05B19/416
摘要： A method for analyzing the condition of a machine, and an apparatus for analyzing the condition of a machine are described.

2. 发明授权

US10809152B2 Analysis system 有权
公开(公告)号：US10809152B2
公开(公告)日：2020-10-20
申请号：US15848207
申请日：2017-12-20
申请人： S.P.M. INSTRUMENT AB
发明人： Lars-Olov Elis Hedin
IPC分类号： G06F11/30 , G01M13/028 , G01H1/00 , G01M13/045 , G01M99/00
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).

3. 发明申请

US20210223094A1 APPARATUS AND A METHOD FOR ANALYSING THE VIBRATION OF A MACHINE HAVING A ROTATING PART 有权
公开(公告)号：US20210223094A1
公开(公告)日：2021-07-22
申请号：US17108515
申请日：2020-12-01
申请人： S.P.M. Instrument AB
发明人： Lars-Olov Elis HEDIN
IPC分类号： G01H1/00
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.

4. 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。

5. 发明申请

US20150032389A1 APPARATUS AND METHOD FOR ANALYSING THE CONDITION OF A MACHINE HAVING A ROTATING PART 审中-公开
标题翻译：用于分析具有旋转部分的机器的状态的装置和方法
公开(公告)号：US20150032389A1
公开(公告)日：2015-01-29
申请号：US14373725
申请日：2013-01-30
申请人： S.P.M. INSTRUMENT AB
发明人： Lars-Olov Hedin
IPC分类号： G01M13/00 , G01P3/00
CPC分类号： G01M13/00 , G01H1/003 , G01M13/028 , G01M13/045 , G01P3/00 , G06F7/06
摘要： An apparatus for analyzing the condition of a machine having a rotating part, includes: a first sensor for generating an analogue electric measurement signal; an analogue-to-digital converter for sampling the analogue electric measurement signal at an initial sampling frequency to generate a digital measurement data signal in response to the received analogue electric measurement signal; a device for generating a position signal having a sequence of position signal values for indicating momentary rotational positions of the rotating part; and a speed value generator for recording a time sequence of the position signal values such that there are angular distances and corresponding durations between at least three consecutive position signals, wherein the speed value generator establishes at least two momentary speed values based on the angular distances and corresponding durations, and further momentary speed values for the rotating part are established by interpolation between the two momentary speed values.
摘要翻译：一种用于分析具有旋转部分的机器的状况的装置，包括：用于产生模拟电测量信号的第一传感器; 模拟 - 数字转换器，用于以初始采样频率对模拟电测量信号进行采样，以响应于所接收的模拟电测量信号产生数字测量数据信号; 用于产生具有用于指示旋转部分的瞬时旋转位置的位置信号值序列的位置信号的装置; 以及速度值发生器，用于记录所述位置信号值的时间序列，使得在至少三个连续位置信号之间存在角距离和对应的持续时间，其中所述速度值发生器基于所述角距离建立至少两个瞬时速度值，以及相应的持续时间，并通过两个瞬时速度值之间的内插建立旋转部分的进一步的瞬时速度值。

6. 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）。

7. 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。

8. 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）。

9. 发明授权

US11561127B2 Apparatus for analysing the condition of a machine having a rotating part 有权
公开(公告)号：US11561127B2
公开(公告)日：2023-01-24
申请号：US16435208
申请日：2019-06-07
申请人： S.P.M. Instrument AB
发明人： Lars-Olov Hedin
IPC分类号： G01M13/045 , G01H1/00
摘要： A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation, includes receiving a first digital signal dependent on mechanical vibrations emanating from rotation of the part, analyzing the first digital signal So as to detect peak amplitude values during a finite time period, the finite time period corresponding to a certain amount of revolution of the part, the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part, defining amplitude ranges, sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence of detected peak amplitude values within the plurality of amplitude ranges, and estimating a representative peak amplitude value in dependence on the sorted peak amplitude values and the certain amount.

10. 发明申请

US20220341815A1 APPARATUS AND METHOD FOR ANALYSING THE CONDITION OF A MACHINE HAVING A ROTATING PART 有权
公开(公告)号：US20220341815A1
公开(公告)日：2022-10-27
申请号：US17666064
申请日：2022-02-07
申请人： S.P.M. Instrument AB
发明人： Lars-Olov Hedin
IPC分类号： G01M13/00 , G06F7/06 , G01H1/00 , G01M13/028 , G01M13/045 , G01P3/00
摘要： An apparatus for analysing the condition of a machine having a part rotating with a speed of rotation (fROT), comprising: a first sensor (10) adapted to generate an analogue electric measurement signal (SEA) dependent on mechanical vibrations (VMD) emanating from rotation of said part; an analogue-to-digital converter (40, 44) adapted to sample said analogue electric measurement signal (SEA) at an initial sampling frequency (fs) so as to generate a digital measurement data signal (SMD, SENV) in response to said received analogue electric measurement signal (SEA); a device (420) for generating a position signal (Ep) having a sequence of position signal values (P(i)) for indicating momentary rotational positions of said rotating part; and a speed value generator (601) being adapted for recording a time sequence of said position signal values (P(i)) such that there are angular distances (delta-FIp1-p2, delta-FIp2-p3) and corresponding durations (delta-Tp1-p2; delta-Tp2-p3) between at least three consecutive position signals (P1, P2, P3) wherein the speed value generator (601) operates to establish at least two momentary speed values (VT1; VT2) based on said angular distances (delta-FIp1-p2, delta-FIp2-p3) and said corresponding durations (delta-Tp1-p2; delta-Tp2-p3), and wherein further momentary speed values for the rotational part (8) are established by interpolation between the at least two momentary speed values (VT1, VT2).

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