Failure detect device and failure detect method
First Claim
1. A failure detect device that detects the presence of a failure in a predetermined peripheral member disposed to either one of a rotary shaft and a power transmission path that passes through the rotary shaft by analyzing a vibration generated in a device provided with the rotary shaft when the rotary shaft is rotated, comprising:
- a vibration detecting unit that detects the vibration of the device;
a rotation speed detecting unit that detects a rotation speed of the rotary shaft;
an analyzing unit that calculates a frequency spectrum of the vibration detected by the vibration detecting unit and determining an actually measured vibration level at each vibration order by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the rotation speed detecting unit; and
a detecting unit that detects the presence of a failure in the predetermined peripheral member on the basis of the actually measured vibration level at each vibration order determined by the analyzing unit.
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Accused Products
Abstract
A failure detect device detects the presence of a failure in a peripheral member of a rotary shaft by analyzing a vibration generated in a device provided with the rotary shaft when the rotary shaft is rotated. A vibration detection unit detects the vibration of the device, and a rotation speed detection unit detects a rotation speed of the rotary shaft. An analysis unit calculates a frequency spectrum of the vibration of the device and determines an actually measured vibration level at each vibration order by dividing a frequency component of the calculated frequency spectrum by the rotation speed of the rotary shaft. A detection unit detects the presence of a failure in the peripheral member on the basis of the actually measured vibration level at each vibration order.
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Citations
18 Claims
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1. A failure detect device that detects the presence of a failure in a predetermined peripheral member disposed to either one of a rotary shaft and a power transmission path that passes through the rotary shaft by analyzing a vibration generated in a device provided with the rotary shaft when the rotary shaft is rotated, comprising:
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a vibration detecting unit that detects the vibration of the device; a rotation speed detecting unit that detects a rotation speed of the rotary shaft; an analyzing unit that calculates a frequency spectrum of the vibration detected by the vibration detecting unit and determining an actually measured vibration level at each vibration order by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the rotation speed detecting unit; and a detecting unit that detects the presence of a failure in the predetermined peripheral member on the basis of the actually measured vibration level at each vibration order determined by the analyzing unit. - View Dependent Claims (2, 3, 4, 5)
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6. A failure detect device that detects the presence of a failure in either one of a predetermined input shaft peripheral member, disposed to either one of an input shaft attached to either one of a continuously variable mechanism and a stepped shift mechanism and a power transmission path that passes through the input shaft, and a predetermined output shaft peripheral member, disposed to either one of an output shaft attached to either one of the continuously variable mechanism and the stepped shift mechanism and a power transmission path that passes through the output shaft, by analyzing a vibration generated in a device provided with the input shaft and the output shaft when the input shaft and the output shaft are rotated, comprising:
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a vibration detecting unit that detects the vibration of the device; a first rotation speed detecting unit that detects a rotation speed of the input shaft; a second rotation speed detecting unit that detects a rotation speed of the output shaft; an analyzing unit that calculates a frequency spectrum of the vibration detected by the vibration detecting unit, determining an actually measured vibration level at each vibration order of the input shaft by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the first rotation speed detecting unit, and determining an actually measured vibration level at each vibration order of the output shaft by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the second rotation speed detecting unit; and a detecting unit that detects the presence of a failure in the predetermined input shaft peripheral member on the basis of the actually measured vibration level at each vibration order of the input shaft, determined by the analyzing unit, and detecting the presence of a failure in the predetermined output shaft peripheral member on the basis of the actually measured vibration level at each vibration order of the output shaft, determined by the analyzing unit.
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7. A failure detect method for detecting the presence of a failure in a predetermined peripheral member disposed to either one of a rotary shaft and a power transmission path that passes through the rotary shaft by analyzing a vibration generated in a device provided with the rotary shaft when the rotary shaft is rotated, comprising:
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a vibration detecting step for detecting the vibration of the device; a rotation speed detecting step for detecting a rotation speed of the rotary shaft; an analyzing step for calculating a frequency spectrum of the vibration detected by the vibration detecting step and determining an actually measured vibration level at each vibration order by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the rotation speed detecting step; and a detecting step for detecting the presence of a failure in the predetermined peripheral member on the basis of the actually measured vibration level at each vibration order determined by the analyzing step. - View Dependent Claims (8, 9, 10, 11)
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12. A failure detect method for detecting the presence of a failure in either one of a predetermined input shaft peripheral member, disposed to either one of an input shaft attached to either one of a continuously variable mechanism and a stepped shift mechanism and a power transmission path that passes through the input shaft, and a predetermined output shaft peripheral member, disposed to either one of an output shaft attached to either one of the continuously variable mechanism and the stepped shift mechanism and a power transmission path that passes through the output shaft, by analyzing a vibration generated in a device provided with the input shaft and the output shaft when the input shaft and the output shaft are rotated, comprising:
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a vibration detecting step for detecting the vibration of the device; a first rotation speed detecting step for detecting a rotation speed of the input shaft; a second rotation speed detecting step for detecting a rotation speed of the output shaft; an analyzing step for calculating a frequency spectrum of the vibration detected by the vibration detecting step, determining an actually measured vibration level at each vibration order of the input shaft by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the first rotation speed detecting step, and determining an actually measured vibration level at each vibration order of the output shaft by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the second rotation speed detecting step; and a detecting step for detecting the presence of a failure in the predetermined input shaft peripheral member on the basis of the actually measured vibration level at each vibration order of the input shaft, determined by the analyzing step and detecting the presence of a failure in the predetermined output shaft peripheral member on the basis of the actually measured vibration level at each vibration order of the output shaft, determined by the analyzing step.
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13. A failure detect device that detects the presence of a failure in a predetermined peripheral member disposed to either one of a rotary shaft and a power transmission path that passes through the rotary shaft by analyzing a vibration generated in a device provided with the rotary shaft when the rotary shaft is rotated, comprising:
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vibration detecting means for detecting the vibration of the device; rotation speed detecting means for detecting a rotation speed of the rotary shaft; analyzing means for calculating a frequency spectrum of the vibration detected by the vibration detecting means and determining an actually measured vibration level at each vibration order by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the rotation speed detecting means; and detecting means for detecting the presence of a failure in the predetermined peripheral member on the basis of the actually measured vibration level at each vibration order determined by the analyzing means. - View Dependent Claims (14, 15, 16, 17)
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18. A failure detect device that detects the presence of a failure in either one of a predetermined input shaft peripheral member, disposed to either one of an input shaft attached to either one of a continuously variable mechanism and a stepped shift mechanism and a power transmission path that passes through the input shaft, and a predetermined output shaft peripheral member, disposed to either one of an output shaft attached to either one of the continuously variable mechanism and the stepped shift mechanism and a power transmission path that passes through the output shaft, by analyzing a vibration generated in a device provided with the input shaft and the output shaft when the input shaft and the output shaft are rotated, comprising:
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vibration detecting means for detecting the vibration of the device; first rotation speed detecting means for detecting a rotation speed of the input shaft; second rotation speed detecting means for detecting a rotation speed of the output shaft; analyzing means for calculating a frequency spectrum of the vibration detected by the vibration detecting means, determining an actually measured vibration level at each vibration order of the input shaft by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the first rotation speed detecting means, and determining an actually measured vibration level at each vibration order of the output shaft by dividing a frequency component of the calculated frequency spectrum by the rotation speed detected by the second rotation speed detecting means; and detecting means for detecting the presence of a failure in the predetermined input shaft peripheral member on the basis of the actually measured vibration level at each vibration order of the input shaft, determined by the analyzing means, and detecting the presence of a failure in the predetermined output shaft peripheral member on the basis of the actually measured vibration level at each vibration order of the output shaft, determined by the analyzing means.
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Specification