WO2023195044A1 - 歯車異常検知装置および歯車異常検知方法 - Google Patents

歯車異常検知装置および歯車異常検知方法 Download PDF

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Publication number
WO2023195044A1
WO2023195044A1 PCT/JP2022/017045 JP2022017045W WO2023195044A1 WO 2023195044 A1 WO2023195044 A1 WO 2023195044A1 JP 2022017045 W JP2022017045 W JP 2022017045W WO 2023195044 A1 WO2023195044 A1 WO 2023195044A1
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WIPO (PCT)
Prior art keywords
gear
acceleration
abnormality
signal section
calculated
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PCT/JP2022/017045
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English (en)
French (fr)
Japanese (ja)
Inventor
沙知 板垣
昌 明日香
元嗣 小崎
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to US18/838,076 priority Critical patent/US20250146906A1/en
Priority to JP2024513575A priority patent/JP7536216B2/ja
Priority to PCT/JP2022/017045 priority patent/WO2023195044A1/ja
Publication of WO2023195044A1 publication Critical patent/WO2023195044A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • G01M13/021—Gearings

Definitions

  • the present disclosure relates to a gear abnormality detection device and a gear abnormality detection method that detect abnormalities in gears.
  • a sensor is used to detect the unevenness of gears rotated by a motor, etc., and abnormalities such as missing teeth in the rotating gear are detected based on the signal corresponding to the unevenness output from the sensor. ing. Assuming that the gear is provided with teeth so that the unevenness is evenly spaced and the gear is rotating at a constant speed, the ratio of the width of the signal corresponding to the concave part of the gear to the width of the signal corresponding to the convex part of the gear is 1: Becomes 1.
  • the ratio of the width of a signal corresponding to a concave portion of a gear to the width of a signal corresponding to a subsequent convex portion of the gear is not 1:1.
  • Patent Document 1 discloses a technology that improves the accuracy of detecting missing teeth in a gear by changing the missing tooth determination value depending on the rotational state of the gear, that is, whether it is in an acceleration state or a deceleration state. has been done.
  • the gear in which the teeth are missing is a crank rotor that rotates integrally with the crankshaft, but teeth are continuously arranged at specified intervals around the outer periphery of the crank rotor.
  • the gear whose abnormality is to be detected is a dedicated gear. Therefore, there is a problem in that it is not possible to detect abnormalities in general gears in which teeth are continuously arranged at regular intervals around the entire outer circumference.
  • the present disclosure has been made in view of the above, and aims to provide a gear abnormality detection device that can improve the accuracy of detecting abnormalities in rotating gears.
  • the gear abnormality detection device of the present disclosure detects a first signal section indicating a concavity of the gear and a second signal section indicating a convexity of the gear from a sensor that detects the concavity and convexity of the gear.
  • an acquisition unit that acquires a pulse signal in which signal sections of Determining the presence or absence of an abnormality in the gear based on the ratio, and further using at least one of the acceleration and jerk of an object that operates in accordance with the rotation of the gear in the first signal section and the second signal section.
  • the present invention is characterized by comprising a calculation unit that determines whether or not there is an abnormality in the gear.
  • the gear abnormality detection device of the present disclosure has the effect of improving the accuracy of detecting abnormalities in rotating gears.
  • a diagram showing a configuration example of a gear abnormality detection device according to Embodiment 1 A diagram showing a pulse signal output from a sensor according to Embodiment 1 A first diagram showing a pulse signal output from the sensor according to Embodiment 1 when there is an abnormality in the gear. A second diagram showing a pulse signal output from the sensor according to Embodiment 1 when there is an abnormality in the gear Flowchart showing the operation of the gear abnormality detection device according to the first embodiment A diagram showing the length of time of each signal section measured by the calculation unit of the gear abnormality detection device according to Embodiment 1. A diagram showing the length of time of each signal section when the gear is rotating with acceleration, measured by the calculation unit of the gear abnormality detection device according to Embodiment 1.
  • a first flowchart showing the operation of the gear abnormality detection device according to the second embodiment A second flowchart showing the operation of the gear abnormality detection device according to the second embodiment
  • FIG. 1 is a diagram showing a configuration example of a gear abnormality detection device 30 according to the first embodiment.
  • the gear abnormality detection device 30 is a device that detects an abnormality in the rotating gear 10.
  • the gear abnormality detection device 30 is mounted on a railway vehicle 40. Further, the gear abnormality detection device 30 is connected to the sensor 20.
  • the gear abnormality detection device 30 and the sensor 20 may be connected by wire or wirelessly.
  • the gear 10 is provided on a railway vehicle 40.
  • the gear 10 is a detection target of the sensor 20 and an abnormality detection target of the gear abnormality detection device 30.
  • the gear 10 rotates in conjunction with the rotation of an axle of a wheel (not shown) of the railway vehicle 40, that is, the gear 10 is attached to a position where the speed of rotation changes depending on the speed of the railway vehicle 40. shall be.
  • the sensor 20 detects the unevenness of the gear 10.
  • the sensor 20 generates and outputs a pulse signal in which a first signal section indicating a concavity of the gear 10 and a second signal section indicating a convexity of the gear 10 are alternately successive as a result of detecting the concavity and convexity of the gear 10 .
  • the method for the sensor 20 to detect the unevenness of the gear 10 may be a general detection method, and for example, a method similar to that of the gear tooth detection section described in Patent Document 1 may be used.
  • the gear abnormality detection device 30 includes an acquisition section 31 and a calculation section 32.
  • the acquisition unit 31 acquires the above-mentioned pulse signal from the sensor 20.
  • the arithmetic unit 32 uses the pulse signal acquired by the acquisition unit 31 to calculate the speed of the gear based on the ratio of the first time length of the first signal section to the second time length of the second signal section. The presence or absence of 10 abnormalities is determined.
  • the calculation unit 32 further determines whether or not there is an abnormality in the gear 10 using at least one of the acceleration and jerk of an object that moves according to the rotation of the gear 10 in the first signal section and the second signal section. judge.
  • the object that moves according to the rotation of the gear 10 is the railway vehicle 40 or the wheels of the railway vehicle 40.
  • the explanation will be given assuming that the object that moves according to the rotation of the gear 10 is the railway vehicle 40.
  • FIG. 2 is a diagram showing a pulse signal output from the sensor 20 according to the first embodiment.
  • the section P1 is the above-mentioned first signal section
  • the section P2 is the above-mentioned second signal section.
  • the section P1 may be the second signal section
  • the section P2 may be the first signal section.
  • the concave sections and convex sections of the gear 10 are equally spaced. Therefore, when the gear 10 is rotating at a constant speed, the first signal section and the second signal section have the same length of time and are equally spaced.
  • FIG. 3 is a first diagram showing a pulse signal output from the sensor 20 according to the first embodiment when there is an abnormality in the gear 10. For example, if an abnormality occurs such as one tooth of the gear 10 being chipped, as shown in FIG. 3, the part that would normally be detected as the second signal section disappears, and the first signal section continues. become. In such a case, the sensor 20 periodically outputs a pulse signal including a portion where the first signal section is continuous, as shown in FIG.
  • FIG. 4 is a second diagram showing a pulse signal output from the sensor 20 according to the first embodiment when there is an abnormality in the gear 10. For example, if an abnormality occurs such as dust or the like adhering between a certain tooth of the gear 10 and an adjacent tooth, as shown in FIG. This means that the signal sections are continuous. In such a case, the sensor 20 periodically outputs a pulse signal including a continuous second signal section, as shown in FIG. 4 .
  • the gear abnormality detection device 30 uses a plurality of detection methods to detect abnormalities in the gear 10. Thereby, in detecting an abnormality in the gear 10, the gear abnormality detection device 30 can improve the accuracy of detecting an abnormality in the rotating gear 10 while suppressing false detection. The specific operation of the gear abnormality detection device 30 will be described below.
  • FIG. 5 is a flowchart showing the operation of the gear abnormality detection device 30 according to the first embodiment.
  • the acquisition unit 31 acquires a pulse signal from the sensor 20 (step S1).
  • the calculation unit 32 uses the pulse signal from the sensor 20 acquired by the acquisition unit 31 to determine whether the ratio of the lengths of adjacent signal sections is within a specified threshold (step S2). That is, the calculation unit 32 performs a first process that determines whether or not there is an abnormality in the gear 10 based on the ratio between the first time length of the first signal section and the second time length of the second signal section. Make a judgment.
  • the ratio of the first time length of the first signal section to the second time length of the second signal section which is the target of threshold comparison, is the ratio of the first time length of the first signal section.
  • the longer time length is taken as the numerator, and the obtained value is taken as the shorter time length as the denominator. That is, the ratio of the first time length of the first signal section to the second time length of the second signal section is 1 or more.
  • the calculation unit 32 measures the length of time of each signal section included in the pulse signal.
  • FIG. 6 is a diagram showing the length of time of each signal section measured by the calculation unit 32 of the gear abnormality detection device 30 according to the first embodiment.
  • the first time corresponding to the first signal section is represented by t1
  • the second time corresponding to the second signal section is represented by t2.
  • the first signal section and the second signal section are equally spaced. That is, the length of time of the first signal section and the length of time of the second signal section are the same.
  • the gear 10 is accelerating or decelerating, the length of time of each signal section becomes different.
  • FIG. 7 is a diagram showing the length of time of each signal section when the gear 10 is rotating with acceleration, as measured by the calculation unit 32 of the gear abnormality detection device 30 according to the first embodiment.
  • FIG. 8 is a diagram showing the length of time of each signal section when the gear 10 is rotating with deceleration, as measured by the calculation unit 32 of the gear abnormality detection device 30 according to the first embodiment.
  • the concave sections and convex sections of the gear 10 are equally spaced, and since the gear 10 rotates in conjunction with the rotation of the axle of the wheel of the railway vehicle 40, one concave section of the gear 10 The distance traveled by the railway vehicle 40 on one convex portion of the gear 10 is the same.
  • the pulse signal output from the sensor 20 changes over the time of each signal section, as shown in FIG. becomes shorter in length. Further, when the railway vehicle 40 is running at a reduced speed, that is, when the gear 10 is rotating at a reduced speed, the pulse signal output from the sensor 20 is changed over the time of each signal section, as shown in FIG. The length of becomes longer.
  • step S2 Yes
  • step S2 If the ratio of the time lengths of adjacent signal sections when the shorter signal section time length is used as the denominator exceeds a preset threshold of 1.5 (step S2: No), the calculation unit 32 calculates , it is determined that the gear 10 has an abnormality as shown in FIG. 3 or 4 (step S5).
  • the threshold value of 1.5 is an example, and is not limited to this.
  • a maintenance person or the like of a railway company operating the railway vehicle 40 may set the threshold value in consideration of the expected acceleration of the railway vehicle 40, the number of teeth of the gear 10, etc.
  • the calculation unit 32 determines whether the absolute value of the acceleration obtained by the calculation is within the absolute value of the maximum acceleration specified for the railway vehicle 40 (step S3).
  • the calculation unit 32 calculates the first speed of the railway vehicle 40 in the first signal section from the first length of time, and calculates the first speed of the railway vehicle 40 in the second signal section from the second length of time.
  • the second speed of the second speed is calculated.
  • the calculation unit 32 divides the travel distance traveled by the railway vehicle 40 on one concave or convex portion of the gear 10 by the length of time of each signal section determined in step S2, and calculates the distance for each signal.
  • the speed of the railway vehicle 40 in the section can be calculated.
  • the calculation unit 32 calculates the first acceleration of the railway vehicle 40 in the first signal section, which is the first speed change rate in the first signal section, and A second acceleration of the railway vehicle 40 in the second signal section, which is a rate of change in speed, is calculated. Then, the calculation unit 32 determines whether there is an abnormality in the gear 10 by comparing the absolute value of the first acceleration and the absolute value of the second acceleration with the absolute value of the maximum acceleration specified for the railway vehicle 40. A second determination is made.
  • FIG. 9 is a diagram showing the acceleration of the railway vehicle 40 in each signal section calculated by the calculation unit 32 of the gear abnormality detection device 30 according to the first embodiment.
  • the first acceleration corresponding to the first signal section is represented by a1
  • the second acceleration corresponding to the second signal section is represented by a2. Note that the acceleration when the railway vehicle 40 is decelerating has a negative value.
  • the calculation unit 32 can obtain the first acceleration by differentiating the first velocity, and can obtain the second acceleration by differentiating the second velocity, but is not limited to this.
  • the arithmetic unit 32 calculates the acceleration for the two signal sections using the time length and speed of the two adjacent signal sections, and shifts the combination of signal sections one by one to obtain the same number of signal sections. The acceleration of can be found.
  • step S3: Yes the calculation unit 32 determines that there is no abnormality in the gear 10, Proceed to step S4.
  • step S3: No the calculation unit 32 causes the gear 10 to perform a process as shown in FIG. 3 or 4. It is determined that such an abnormality exists (step S5). Note that when the absolute value of the maximum acceleration specified for the railway vehicle 40 differs between when the acceleration is positive and when the acceleration is negative, the calculation unit 32 calculates the first acceleration or the first acceleration determined by the calculation.
  • the absolute value of the maximum acceleration to be compared may be changed depending on whether the second acceleration is positive or negative.
  • the calculation unit 32 determines whether the absolute value of the jerk obtained by the calculation is within the absolute value of the maximum jerk specified for the railway vehicle 40 (step S4).
  • the calculation unit 32 calculates the first jerk of the 40 railway cars in the first signal section, which is the rate of change of the first acceleration in the first signal section, and The second jerk of the railway vehicle 40 in the second signal section, which is the rate of change of acceleration of 2, is calculated.
  • the calculation unit 32 determines whether the gear 10 is abnormal by comparing the absolute value of the first jerk and the second absolute value with the absolute value of the maximum jerk specified for the railway vehicle 40. A third determination is made to determine the presence or absence.
  • FIG. 10 is a diagram showing the jerk of the railway vehicle 40 in each signal section calculated by the calculation unit 32 of the gear abnormality detection device 30 according to the first embodiment.
  • the first jerk corresponding to the first signal section is represented by y1
  • the second jerk corresponding to the second signal section is represented by y2.
  • the calculation unit 32 can obtain the first jerk by differentiating the first acceleration, and can obtain the second jerk by differentiating the second acceleration, but is not limited to this.
  • the calculation unit 32 calculates the jerk for the two signal sections using the time length and acceleration of the two adjacent signal sections, and shifts the combination of the signal sections one by one to determine the signal sections. The same number of jerks can be obtained.
  • step S4: Yes If the absolute value of the jerk obtained by the calculation is within the absolute value of the maximum jerk specified for the railway vehicle 40 (step S4: Yes), the calculation unit 32 determines that there is no abnormality in the gear 10. Then, the process returns to step S1 and the above-described operations are repeated.
  • step S4: No the calculation unit 32 causes the gear 10 to perform the process shown in FIG. 3 or 4. It is determined that there is an abnormality as shown in (step S5).
  • the calculation unit 32 calculates the maximum jerk by calculation.
  • the absolute value of the maximum jerk to be compared may be changed depending on whether the first jerk or the second jerk is positive or negative.
  • the calculation unit 32 determines whether the number of times it has been determined that there is an abnormality within a specified period has reached a specified number of times (step S6). In this embodiment, the calculation unit 32 determines whether or not there is an abnormality in the gear 10 using a plurality of determination methods. In this case, compared to the case where it is determined whether or not there is an abnormality in the gear 10 using one determination method, the possibility of determining that there is an abnormality in the gear 10 is higher, but the possibility of false detection is also higher. Become.
  • step S6: No the process returns to step S1 and the above-described operations are repeated.
  • step S6: Yes the calculation unit 32 actually determines whether It is determined that there is an abnormality in the gear 10 and that the abnormality in the gear 10 has been detected.
  • the calculation unit 32 notifies, for example, the driver of the railway vehicle 40 that an abnormality in the gear 10 has been detected.
  • the calculation unit 32 may notify the driver of the railway vehicle 40 that an abnormality in the gear 10 has been detected, and may perform operations such as applying an emergency brake of the railway vehicle 40.
  • step S6 is not limited to three times, but may be two times, or four or more times.
  • the calculation unit 32 may count the number of times it is determined that there is an abnormality in the gear 10 in step S6 for each determination method in step S2, step S3, and step S4, or may count the number of times it is determined that there is an abnormality in the gear 10 in step S6. Counting may be performed regardless of the determination method in step S4. In this way, the calculation unit 32 determines that an abnormality in the gear 10 has been detected when the number of times it has been determined that the gear 10 has an abnormality using any of the determination methods within the specified period reaches the specified number of times. do.
  • the gear abnormality detection device 30 determines whether or not there is an abnormality in the gear 10 using three determination methods shown in step S2, step S3, and step S4. It is assumed that if there is an abnormality in the gear 10, the abnormality in the gear 10 can be detected in many cases using the first determination method in step S2.
  • a case in which the calculation unit 32 cannot determine that there is an abnormality in the gear 10 using the first determination method in step S2, but can determine that there is an abnormality in the gear 10 using the second determination method in step S3 is, for example, a railway vehicle. This is a case where vehicle No. 40 is traveling at low speed.
  • the second determination method in step S3 is to detect an abnormality in the gear 10 when the speed suddenly changes exceeding a reference value while the railway vehicle 40 is running at a low speed, that is, when the acceleration changes. be.
  • the calculation unit 32 determines whether the railway vehicle 40 is traveling at 8.0 km/h in the next signal section of the pulse signal. It is possible to detect situations such as changes in speed.
  • the calculation unit 32 cannot determine that there is an abnormality in the gear 10 using the first determination method in step S2 and the second determination method in step S3, and determines that there is an abnormality in the gear 10 using the third determination method in step S4.
  • a case where it can be determined is, for example, a case where the railway vehicle 40 is traveling at a lower speed than the speed assumed in step S3.
  • the third determination method in step S4 is to detect an abnormality in the gear 10 when the acceleration changes significantly while the railway vehicle 40 is traveling at a lower speed than the speed assumed in step S3. .
  • the calculation unit 32 determines, for example, that when the railway vehicle 40 is traveling at 2.0 km/h, the acceleration is 2.0 km in the next signal section of the pulse signal. It is possible to detect a situation where the acceleration changes greatly, such as when the speed changes at a rate of /h and then in the next signal section of the pulse signal, the acceleration changes at a rate of -2.0 km/h.
  • the acquisition unit 31 is an interface that can acquire pulse signals from the sensor 20.
  • the calculation unit 32 is realized by a processing circuit.
  • the processing circuit may be a memory that stores a program and a processor that executes the program stored in the memory, or may be dedicated hardware.
  • the processing circuit is also called a control circuit.
  • FIG. 11 is a diagram showing an example of the configuration of the processing circuit 90 when the processing circuit of the gear abnormality detection device 30 according to the first embodiment is implemented by the processor 91 and the memory 92.
  • a processing circuit 90 shown in FIG. 11 is a control circuit and includes a processor 91 and a memory 92.
  • each function of the processing circuit 90 is realized by software, firmware, or a combination of software and firmware.
  • Software or firmware is written as a program and stored in memory 92.
  • each function is realized by a processor 91 reading and executing a program stored in a memory 92.
  • the processing circuit 90 includes a memory 92 for storing a program by which the processing of the gear abnormality detection device 30 is executed.
  • This program can also be said to be a program for causing the gear abnormality detection device 30 to execute each function realized by the processing circuit 90.
  • This program may be provided by a storage medium in which the program is stored, or may be provided by other means such as a communication medium.
  • the acquisition unit 31 receives a pulse signal from the sensor 20 that detects the unevenness of the gear 10, in which a first signal section indicating a concave portion of the gear 10 and a second signal section indicating a convex portion of the gear 10 are consecutive. a first step of obtaining the first time length of the first signal section and a second time length of the second signal section using the pulse signal. The presence or absence of an abnormality in the gear 10 is determined using It can also be said that this is a program that causes the gear abnormality detection device 30 to execute the second step of determining the presence or absence of an abnormality in step 10.
  • the processor 91 is, for example, a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor).
  • the memory 92 may be a nonvolatile or volatile memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), or EEPROM (registered trademark) (Electrically EPROM). This includes semiconductor memory, magnetic disks, flexible disks, optical disks, compact disks, mini disks, and DVDs (Digital Versatile Discs).
  • FIG. 12 is a diagram showing an example of the configuration of the processing circuit 93 in the case where the processing circuit of the gear abnormality detection device 30 according to the first embodiment is configured with dedicated hardware.
  • the processing circuit 93 shown in FIG. 12 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination of these. applicable.
  • a part may be realized by dedicated hardware, and a part may be realized by software or firmware. In this way, the processing circuit 93 can realize each of the above functions using dedicated hardware, software, firmware, or a combination thereof.
  • the gear abnormality detection device 30 uses the pulse signal acquired from the sensor 20 that detects the irregularities of the gear 10 to detect the first time in the first signal section. A first determination is made to determine whether there is an abnormality in the gear 10 based on the ratio between the length and the second time length of the second signal section. Furthermore, the gear abnormality detection device 30 determines whether or not there is an abnormality in the gear 10 by comparing the absolute value of the first acceleration and the absolute value of the second acceleration with the absolute value of the maximum acceleration specified for the railway vehicle 40. A second determination is made to determine whether the gear 10 A third determination is made to determine whether or not there is an abnormality.
  • the gear abnormality detection device 30 can improve the accuracy of detecting abnormalities in the rotating gear 10. Furthermore, the gear abnormality detection device 30 can detect abnormalities in the gear 10, not in a dedicated gear as described in Patent Document 1, but in a gear 10 having a general configuration. Furthermore, the gear abnormality detection device 30 can detect abnormalities in the gear 10 without using any sensor other than the sensor 20 or any other device for detecting abnormalities in the gear 10.
  • the gear 10 whose abnormality is detected by the gear abnormality detection device 30 is mounted on the railway vehicle 40, but the present invention is not limited to this.
  • the gear 10 whose abnormality is detected by the gear abnormality detection device 30 may be mounted on a moving body other than the railway vehicle 40.
  • the gear abnormality detection device 30 can detect an abnormality also in, for example, a gear 10 mounted on a machine tool or the like having a movable part.
  • the gear abnormality detection device 30 is mounted on the railway vehicle 40, but the present invention is not limited to this.
  • the gear abnormality detection device 30 may be installed outside the railway vehicle 40 as long as the acquisition unit 31 can acquire the pulse signal output from the sensor 20 by wireless communication.
  • the gear abnormality detection device 30 performs three determination methods including a first determination, a second determination, and a third determination in order to detect an abnormality in the gear 10.
  • a case will be described in which the gear abnormality detection device 30 simplifies the operation of the determination method for detecting an abnormality in the gear 10.
  • the configuration of the gear abnormality detection device 30 is similar to the configuration of the gear abnormality detection device 30 of the first embodiment shown in FIG.
  • the gear abnormality detection device 30 detects an abnormality in the gear 10 by performing the operation shown in the flowchart shown in FIG. It is also possible that the abnormality of the gear 10 has never been detected using the determination method 3.
  • the calculation unit 32 cannot determine that there is an abnormality in the gear 10 using the first determination method in step S2, but can determine that there is an abnormality in the gear 10 using the second determination method in step S3.
  • the gear abnormality detection device 30 uses the second determination method in step S3 or the third determination method in step S4, in which the frequency of detecting abnormalities in the gear 10 is low, taking into account the processing load and the like. May be omitted.
  • FIG. 13 is a first flowchart showing the operation of the gear abnormality detection device 30 according to the second embodiment.
  • FIG. 14 is a second flowchart showing the operation of the gear abnormality detection device 30 according to the second embodiment.
  • the flowchart shown in FIG. 13 is obtained by removing the third determination method in step S4 from the flowchart of the first embodiment shown in FIG.
  • the flowchart shown in FIG. 14 is the same as the flowchart of the first embodiment shown in FIG. 5, except that the second determination method in step S3 is deleted. Since the operation of each step is similar to that in the first embodiment, detailed explanation will be omitted. However, in the flowchart shown in FIG. 14, since step S3 is omitted, the calculation unit 32 of the gear abnormality detection device 30 calculates the speed in each signal section and the acceleration in each signal section in step S4. It is necessary to perform calculations.
  • the gear abnormality detection device 30 uses the third determination method in step S4 or the second determination method in step S3, depending on the actual abnormality detection situation of the gear 10. The determination method is omitted. Thereby, the gear abnormality detection device 30 can reduce the processing load when detecting an abnormality in the gear 10, depending on the actual detection situation of the abnormality in the gear 10.

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  • General Physics & Mathematics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Control Of Transmission Device (AREA)
PCT/JP2022/017045 2022-04-04 2022-04-04 歯車異常検知装置および歯車異常検知方法 Ceased WO2023195044A1 (ja)

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US18/838,076 US20250146906A1 (en) 2022-04-04 2022-04-04 Gear defect detection device and gear defect detection method
JP2024513575A JP7536216B2 (ja) 2022-04-04 2022-04-04 歯車異常検知装置および歯車異常検知方法
PCT/JP2022/017045 WO2023195044A1 (ja) 2022-04-04 2022-04-04 歯車異常検知装置および歯車異常検知方法

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Publication number Priority date Publication date Assignee Title
JPS6358167A (ja) * 1986-08-28 1988-03-12 Akebono Brake Ind Co Ltd 回転センサの故障検出装置
JP2006349544A (ja) * 2005-06-17 2006-12-28 Bosch Corp 車輪速度センサ異常検出装置
JP2009236676A (ja) * 2008-03-27 2009-10-15 Omron Corp 速度検出装置
WO2019186803A1 (ja) * 2018-03-28 2019-10-03 三菱電機株式会社 速度演算装置、車上制御装置、速度演算方法および速度照査方法
JP2020112454A (ja) * 2019-01-11 2020-07-27 ジヤトコ株式会社 検査装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6358167A (ja) * 1986-08-28 1988-03-12 Akebono Brake Ind Co Ltd 回転センサの故障検出装置
JP2006349544A (ja) * 2005-06-17 2006-12-28 Bosch Corp 車輪速度センサ異常検出装置
JP2009236676A (ja) * 2008-03-27 2009-10-15 Omron Corp 速度検出装置
WO2019186803A1 (ja) * 2018-03-28 2019-10-03 三菱電機株式会社 速度演算装置、車上制御装置、速度演算方法および速度照査方法
JP2020112454A (ja) * 2019-01-11 2020-07-27 ジヤトコ株式会社 検査装置

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