Abnormality Diagnosing Apparatus and Abnormality Diagnosing Method
First Claim
1. A abnormality diagnosing apparatus used in a machine equipment including a rotating or sliding part relative to a stationary member, the abnormality diagnosing apparatus comprising:
- a detecting portion fixed to the rotating or sliding part or the stationary member and including at least one vibration system sensor of a vibration sensor, a sound sensor, an ultrasonic sensor and an AE sensor; and
a temperature sensor; and
a signal processing portion for determining a state of the part from a detecting signal outputted by the detecting portion;
wherein the signal processing portion determines presence or absence of a abnormality of the part, or presence or absence of the abnormality of the part and a degree of a damage based on a combination of a measured result by the vibration system sensor and a measured result by the temperature sensor.
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Accused Products
Abstract
A abnormality diagnosing apparatus used in a machine equipment including a rotating or sliding part relative to a stationary member includes a detecting portion 31 fixed to the rotating or sliding part or the stationary member and including a vibration sensor 32 and a temperature sensor 33, and a signal processing portion 81 for determining a state of the part from a detecting signal outputted by the detecting portion 31. The signal processing portion 81 determines presence or absence of a abnormality, or presence or absence of the abnormality and a degree of a damage of the part based on a combination of a measured result by the vibration sensor 32 and a measured result by the temperature sensor 33.
142 Citations
37 Claims
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1. A abnormality diagnosing apparatus used in a machine equipment including a rotating or sliding part relative to a stationary member, the abnormality diagnosing apparatus comprising:
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a detecting portion fixed to the rotating or sliding part or the stationary member and including at least one vibration system sensor of a vibration sensor, a sound sensor, an ultrasonic sensor and an AE sensor; and
a temperature sensor; anda signal processing portion for determining a state of the part from a detecting signal outputted by the detecting portion; wherein the signal processing portion determines presence or absence of a abnormality of the part, or presence or absence of the abnormality of the part and a degree of a damage based on a combination of a measured result by the vibration system sensor and a measured result by the temperature sensor. - View Dependent Claims (2, 9, 10, 16, 27, 28, 29, 30, 31)
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3. A abnormality diagnosing apparatus used in a machine equipment including a rotating or sliding part relative to a stationary member, the abnormality diagnosing apparatus comprising:
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a driving unit for driving the rotating or sliding part; a detecting portion fixed to the part or the stationary member and including at least one of at least one vibration system sensor of a vibration sensor, a sound sensor, an ultrasonic sensor and an AE sensor; and
a temperature sensor; anda signal processing portion for determining a state of the part from a detecting signal outputted by the detecting portion; wherein the signal processing portion diagnoses a abnormality of the part based on the detecting signal of a vibration or a temperature by the detecting portion when the part is moved by inertia within a predetermined speed zone when a power of the driving unit is turned off. - View Dependent Claims (6, 7, 8)
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4. A abnormality diagnosing apparatus used in a machine equipment including a rotating part relative to a stationary member, the abnormality diagnosing apparatus comprising:
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a driving unit for driving to rotate the part; a detecting portion fixed to the part or the stationary member and including at least one of; at least one of vibration system sensor of a vibration sensor, a sound sensor, an ultrasonic sensor and an AE sensor; and a temperature sensor; and a signal processing portion for determining a state of the part from a detecting signal outputted by the detecting portion; wherein the signal processing portion diagnosis a abnormality of the part based on the detecting signal of a vibration or a temperature by the detecting portion when the part is rotated within a rotational speed zone 100 min−
1 or faster and 1500 min−
1 or slower. - View Dependent Claims (5)
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11. A abnormality diagnosing apparatus used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing apparatus comprising:
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at least one detecting portion for outputting a signal generated from the machine equipment as an electric signal; and a signal processing portion for; analyzing a frequency of a waveform of the electric signal; sampling a peak of a spectrum larger than a reference value calculated based on the spectrum provided by analyzing the frequency; comparing and checking a frequency between the peaks and a frequency component owing to a damage of the part calculated based on a rotational speed signal or a moving speed signal; and determining presence or absence of a abnormality of the part and an abnormal portion based on a result of the checking. - View Dependent Claims (12, 25, 26)
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13. A abnormality diagnosing apparatus used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing apparatus comprising:
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at least one detecting portion for outputting a signal generated from the machine equipment as an electric signal; and a signal processing portion for determining presence or absence of a abnormality and an abnormal portion of the part based on a frequency of a shockwave in which a waveform of the electric signal per unit time exceeds a threshold, and a rotational speed signal or a moving speed signal. - View Dependent Claims (14, 15)
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17. A abnormality diagnosing apparatus used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing apparatus comprising:
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at least one detecting portion for outputting a signal generated from the machine equipment as an electric signal; and a signal processing portion for; analyzing a frequency of a waveform of the electric signal, comparing and checking a frequency component of a measured spectrum data provided by analyzing the frequency and a frequency component owing to the part with a variable allowable width; and determining presence or absence of a abnormality and an abnormal portion of the part based on a result of the checking. - View Dependent Claims (20, 21, 22)
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18. A abnormality diagnosing apparatus used in a machine equipment including a rotating part, the abnormality diagnosing apparatus comprising:
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at least one detecting portion for outputting a signal generated from the machine equipment as an electric signal; and a signal processing portion for; analyzing a frequency of a waveform of the electric signal, comparing and checking a frequency component of a measured spectrum data provided by analyzing the frequency and a frequency component owing to the rotating part with an allowable width; and determining presence or absence of a abnormality and an abnormal portion of the rotating part based on a result of the checking; wherein a zone having un upper limit and lower limit, both of which are calculated from the rotational speed of the rotating part and dimensional specification of the rotating part, is divided into at least one zone, a central value in the divided zone is calculated, and the allowable width is set as at least a zone having an arbitrary size which is given with respect to the central value, and wherein the signal processing portion compares and checks the frequency component of the measured spectrum data and the frequency component owing to the rotating part at least at each of the allowable width. - View Dependent Claims (19)
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23. A abnormality diagnosing apparatus used in a machine equipment having at least one rotating or sliding part, the abnormality diagnosing apparatus comprising:
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at least one detecting portion for outputting a signal generated from the machine equipment as an electric signal; and a signal processing portion for; analyzing a frequency of a waveform of the electric signal; comparing and checking a frequency component of a measured spectrum data provided by analyzing the frequency and a frequency component owing to the part; and determining presence or absence of a abnormality and an abnormal portion of the part based on a result of the checking; wherein a reference value used for the comparing and checking is calculated based on a limited frequency range of the measured spectrum data.
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24. A abnormality diagnosing apparatus used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing apparatus comprising:
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at least one detecting portion for outputting a signal generated from the machine equipment as an electric signal; a signal processing portion for analyzing a frequency of a waveform of the electric signal;
comparing and checking a frequency component of a measured spectrum data provided by analyzing the frequency and a frequency component owing to the part; and
determining presence or absence of a abnormality and an abnormal portion of the part based on a result of the checking;a storing portion for storing a result of a diagnosis diagnosed by the signal processing portion; an outputting portion for outputting the result of the diagnosis in a predetermined style; and a report forming portion for forming a report from an outputted result outputted by the outputting portion based on at least one program.
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32. A abnormality diagnosing method used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing method comprising the steps of:
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detecting a signal generated from the machine equipment and outputting the signal as an electric signal; analyzing a frequency of a waveform of the detected signal; a step of sampling a peak of a spectrum larger than a reference value calculated based on the spectrum provided by the analyzing step, and comparing and checking a frequency between the peaks and a frequency component owing to a damage of the part calculated based on a rotational speed signal or a moving speed signal; and determining presence or absence of a abnormality and an abnormal portion of the part based on a result of checking at the comparing step.
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33. A abnormality diagnosing method used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing method comprising the steps of:
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detecting a signal generated from the machine equipment and outputting the signal as an electric signal; and detecting presence or absence of a abnormality of the part based on a frequency of a shockwave in which a waveform per a unit time period of the electric signal exceeds a threshold, and a rotational speed signal or a moving speed signal.
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34. A abnormality diagnosing method used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing method comprising the steps of:
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detecting a signal generated from the machine equipment and outputting the signal as an electric signal; analyzing a frequency of a waveform of the detected signal; comparing and checking a frequency component of a measured spectrum data provided at the analyzing step and a frequency component owing to the part with a variable allowable width; and determining presence or absence of a abnormality and an abnormal portion of the part based on a result of the checking at the comparing step.
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35. A abnormality diagnosing method used in a machine equipment including a rotating part, the abnormality diagnosing method comprising the steps of:
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detecting a signal generated from the machine equipment and outputting the signal as an electric signal; analyzing a frequency of a waveform of the detected signal; setting at least one allowable width such that;
a zone having an upper limit and lower limit, both of which are calculated from the rotational speed of the rotating part and dimensional specification design of the rotating part, is divided into at least one zone, a central value in the divided zone is calculated, and the allowable width is set as at least a zone having an arbitrary size which is given with respect to the central valuecomparing and checking a frequency component of a measured spectrum data provided by analyzing the frequency and a frequency component owing to the rotating part at each of at least one of the allowable width; and determining presence or absence of an abnormality and an abnormal portion of the rotating part based on a result of the checking at the comparing step.
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36. A abnormality diagnosing method used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing method comprising the steps of:
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detecting a signal generated from the machine equipment and outputting the signal as an electric signal; analyzing a frequency of a waveform of the detected signal; comparing and checking a frequency component of a measured spectrum data provided at the analyzing step and a frequency component owing to the part; and determining presence or absence of a abnormality and an abnormal portion of the part based on a result of the checking at the comparing step; wherein a reference value used in the comparing and checking is calculated based on a limited frequency range of the measured spectrum data.
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37. A abnormality diagnosing method used in a machine equipment including at least one rotating or sliding part, the abnormality diagnosing method comprising the steps of:
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detecting a signal generated from the machine equipment and outputting the signal as an electric signal; analyzing a frequency of a waveform of the detected signal; comparing and checking a frequency component of a measured spectrum data provided at the analyzing step and a frequency component owing to the part; determining presence or absence of a abnormality and an abnormal portion of the part based on a result of the checking at the comparing step; storing a result of a diagnosis provided by at least by one of the analyzing, comparing and determining steps; outputting the result of the diagnosis in a predetermined style; and forming a report from a result of an output outputted by the outputting step based on at least one program.
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Specification