WO2017183410A1 - ステアリングシステムの異音検出方法及びステアリングシステムの評価装置 - Google Patents

ステアリングシステムの異音検出方法及びステアリングシステムの評価装置 Download PDF

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Publication number
WO2017183410A1
WO2017183410A1 PCT/JP2017/013227 JP2017013227W WO2017183410A1 WO 2017183410 A1 WO2017183410 A1 WO 2017183410A1 JP 2017013227 W JP2017013227 W JP 2017013227W WO 2017183410 A1 WO2017183410 A1 WO 2017183410A1
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WO
WIPO (PCT)
Prior art keywords
steering system
sound
column shaft
microphone
steering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/013227
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English (en)
French (fr)
Japanese (ja)
Inventor
佐藤　佳宏朗
武藤　泰之
将幸 金津
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
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NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP2017538742A priority Critical patent/JP6225368B1/ja
Priority to CN201780012028.9A priority patent/CN108700454A/zh
Priority to BR112018015685-0A priority patent/BR112018015685A2/pt
Priority to US15/573,735 priority patent/US10634647B2/en
Priority to KR1020187021399A priority patent/KR20180134840A/ko
Priority to EP17785752.1A priority patent/EP3447460A4/en
Publication of WO2017183410A1 publication Critical patent/WO2017183410A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/06—Steering behaviour; Rolling behaviour
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/42—Detecting the response signal, e.g. electronic circuits specially adapted therefor by frequency filtering or by tuning to resonant frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/014—Resonance or resonant frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/101—Number of transducers one transducer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver

Definitions

  • the present invention relates to a method for detecting abnormal noise of a steering system and a steering system evaluation apparatus.
  • the final inspection for abnormal noise caused by the steering system is performed by a test driver inspecting and evaluating the abnormal noise caused by the steering system by distinguishing it from other noises in a vehicle running test.
  • tire road noise and engine noise are dominant in the vehicle cabin noise, and the S / N ratio of abnormal noise caused by the steering system is small. Often difficult.
  • a microphone or an acceleration is attached to the lower portion of the electric power steering device by repeatedly inputting vibrations to the gear meshing portion and causing the abnormal noise caused by the rotation of the gear meshing portion. It is known to detect with a sensor (see, for example, Patent Document 1).
  • An object of the present invention is to provide a method for detecting an abnormal sound of a steering system and an evaluation device for the steering system that can accurately detect an abnormal noise generated from the steering system by increasing the S / N ratio.
  • the present invention has the following configuration.
  • a method for detecting abnormal noise of a steering system comprising: a column shaft that rotatably supports a steering wheel; and detecting abnormal noise from a steering system that steers wheels according to rotation of the column shaft, Using a microphone disposed facing the column shaft end of the column shaft on the steering wheel side, the sound from the column shaft end is measured,
  • An abnormal sound detection method for a steering system wherein an abnormal sound detection signal caused by the steering system is generated from a sound signal output from the microphone.
  • An evaluation device for a steering system that includes a column shaft that rotatably supports a steering wheel, and detects abnormal noise from a steering system that steers a wheel according to the rotation of the column shaft, A microphone disposed facing the column shaft end of the column shaft on the steering wheel side; A gantry comprising a vibrator for supporting the steering system and applying vibration; While applying vibration to the pedestal by the vibrator, the sound from the column shaft end is measured using the microphone, and abnormal noise caused by the steering system is detected from the sound signal output from the microphone.
  • a steering system evaluation apparatus comprising:
  • abnormal noise generated from the steering system can be detected accurately.
  • 2 is a spectrogram of a detected audio signal in the first embodiment. It is the spectrogram of the detected audio
  • FIG. 1 is a perspective view of a steering system that detects abnormal noise by the abnormal noise detection method of the present invention.
  • the traveling direction of the vehicle will be described as the front, and the reverse direction opposite to the traveling direction will be referred to as the rear.
  • the steering wheel 13 is supported on the rear end portion of the column shaft 15 so as to be rotatable.
  • the column shaft 15 is rotatably supported by the steering column 17 in a state where the cylindrical steering column 17 is inserted in the axial direction.
  • the front end portion of the column shaft 15 is connected to the rear end portion of the intermediate shaft 21 via the universal joint 19.
  • the front end portion of the intermediate shaft 21 is connected to the input shaft 27 of the steering gear unit 25 via another universal joint 23.
  • the steering gear unit 25 transmits the rotation of the input shaft 27 to a pair of left and right steering shafts 29 connected to the front wheels of the vehicle and extending in the vehicle width direction.
  • FIG. 2 is a schematic configuration diagram of a steering wheel and a detection device in which a microphone is installed.
  • the abnormal noise detection method according to this configuration detects an abnormal noise from the steering system using the microphone 31 and the detection device 33.
  • the microphone 31 has a sound collecting unit 35 at the tip, and the sound collecting unit 35 captures sound and outputs a sound signal.
  • the microphone 31 for example, various types such as a dynamic microphone and a condenser microphone can be used.
  • the microphone 31 is disposed so as to face the steering wheel 13. At that time, the steering wheel 13 removes an attachment member such as an air bag module from the wheel body, and exposes the end 45 of the column shaft 15.
  • an attachment member such as an air bag module
  • the end portion 54 is a male screw portion is shown, but a configuration in which components attached to the end portion 45 are exposed may be used.
  • the microphone 31 is disposed on the vehicle rear side with respect to the column shaft 15, and the sound collection unit 35 of the microphone 31 is disposed at a position facing the end 45 of the column shaft 15.
  • the microphone 31 is connected to the detection device 33 via the signal cable 32.
  • the detection device 33 includes a frequency analysis unit 37, a rattle sound component extraction unit 39, and an evaluation unit 41.
  • the frequency analysis unit 37 performs frequency analysis based on the sound signal output from the microphone 31.
  • the rattle sound component extraction unit 39 extracts a rattle sound component resulting from a collision when each component constituting the steering system 11 is relatively displaced from the frequency analysis result by the frequency analysis unit 37.
  • the evaluation unit 41 obtains an evaluation value based on the rattle sound component extracted by the rattle sound component extraction unit 39, and evaluates the abnormal sound of the steering system 11.
  • FIG. 3 is an explanatory diagram showing details of the arrangement of the microphone 31.
  • the distance L between the end portion 45 of the column shaft 15 and the microphone 31 is 50 mm or less.
  • the microphone 31 is preferably installed as close as possible to the end 45 of the column shaft 15 so as not to interfere with the column shaft 15, and the distance L is more preferably 10 mm or less.
  • the microphone 31 is preferably disposed on the axis X of the column shaft 15. However, if the sound collecting unit 35 faces the end 45 of the column shaft 15, the microphone 31 is inclined with respect to the axis X of the column shaft 15. It may be. For example, although depending on the directivity of the microphone 31, the inclination angle ⁇ from the axis X of the column shaft 15 may be within a range of ⁇ 50 °, preferably ⁇ 30 °.
  • the microphone 31 is preferably installed in a state where the space 45 including only the air layer is provided between the end portion 45 of the column shaft 15 and the microphone 31. That is, the microphone 31 is installed in a state where sound is not blocked or hardly blocked from the end 45 of the column shaft 15.
  • FIG. 4 is an explanatory view showing one form of abnormal noise detection of a steering system mounted on a vehicle.
  • an abnormal noise from the steering system 11 is detected while the vehicle V is running with the steering system 11 mounted on the vehicle V.
  • the detection device 33 is operated to drive the vehicle V.
  • uneven roads such as cobblestone roads such as Belgian roads and cobblestone roads in which some rounded stones are embedded in the ground regularly or irregularly at a pitch of 10 cm to 100 cm.
  • R is run at a speed of 10 km / h to 40 km / h.
  • a sound emitted from the end 45 of the column shaft 15 is detected using the microphone 31 while the vehicle V is traveling.
  • the microphone 31 outputs the detected sound to the detection device 33 as a sound signal.
  • the detection device 33 inputs the sound signal from the microphone 31 to the frequency analysis unit 37 and performs frequency analysis.
  • the frequency analysis unit 37 obtains a frequency spectrum that is a sound pressure intensity distribution for each frequency of the sound signal, and outputs the obtained frequency spectrum to the rattle sound component extraction unit.
  • the rattle sound component extraction unit 39 extracts a rattle sound component that is an abnormal sound signal caused by the steering system 11 from the frequency spectrum output from the frequency analysis unit 37.
  • the rattle sound component extraction unit 39 uses a high-pass filter, a low-pass filter, or a band-pass filter from the input frequency spectrum, and the sound pressure intensity in the frequency band of 300 Hz to 8 kHz with a sense of rattle sound. Are selectively extracted, and the signal is used as an abnormal sound signal. It is more preferable to extract the rattle sound frequency band from 500 Hz to 5 kHz and extract the sound pressure intensity in the frequency band.
  • the evaluation unit 41 evaluates the steering system 11 by determining whether or not the sound pressure intensity of the obtained abnormal sound signal is within a preset allowable range, for example.
  • the abnormal noise of the steering system 11 is detected by the microphone 31 arranged at the position opposite to the end 45 of the column shaft 15. Since all the components of the steering system 11 are connected to the end portion 45 of the column shaft 15, sound in the steering system 11 is emitted from the end portion 45 of the column shaft 15. By detecting this sound, the noise inside the steering system can be accurately grasped. Since the steering wheel 13 itself amplifies sound using the end portion 45 of the column shaft 15 as a sound source, the microphone 31 is disposed at a position facing the steering wheel 13 to further improve the S / N ratio of the sound signal. be able to.
  • the abnormal noise of the steering system 11 can be measured with higher sensitivity.
  • FIG. 5 is an explanatory view schematically showing the positional relationship between the column shaft 15 and the microphone 31.
  • a space S consisting only of an air layer is formed between the end 45 of the column shaft 15 and the microphone 31.
  • the present invention is not limited thereto, and a member 47 such as a sheet or a cover that does not shield sound propagation or has a low shielding effect may be disposed in a part of the space S.
  • the member 47 has an effect of passing a specific frequency component including a rattle sound and blocking other frequency components, the signal processing by the rattle sound component extraction unit 39 can be simplified or omitted. .
  • the rattle sound is more accurately extracted by selectively extracting the sound pressure intensity in the frequency band of 300 Hz to 8 kHz including the frequency band of the rattle sound caused by the steering system 11 from the sound measured by the microphone 31.
  • the noise is always stable and accurate without being affected by other sound components such as tire noise when the vehicle travels. Can be evaluated.
  • the support structure of the microphone 31 is not limited as long as the microphone 31 is disposed so as to face the end portion 45 of the column shaft 15.
  • the microphone 31 is preferably supported integrally with the steering wheel 13. If the microphone 31 is supported on the steering wheel 13 in this manner, the microphone 31 does not interfere with the operation of the steering wheel 13, and the surrounding members There is no interference.
  • the noise from the steering system 11 is measured using only the microphone 31, but the vibration sensor 43 for detecting vibration may be used in combination.
  • the vibration sensor 43 is attached to a position connected to the column shaft 15 such as the end 45 of the column shaft 15, and the vibration of the column shaft 15 is detected by the vibration sensor 43.
  • the vibration sensor 43 outputs the detected vibration to the detection device 33 as a vibration detection signal.
  • the detection device 33 evaluates the input vibration detection signal together with the sound pressure intensity described above.
  • vibration sensor 43 various types of sensors such as a MEMS acceleration sensor applying a MEMS (Micro Electro Mechanical System) technology and a piezoelectric acceleration sensor can be used as the acceleration sensor.
  • MEMS acceleration sensor applying a MEMS (Micro Electro Mechanical System) technology
  • piezoelectric acceleration sensor can be used as the acceleration sensor.
  • the detection device 33 may perform evaluation based on the detected vibration intensity, or may perform frequency analysis on the input vibration detection signal and perform evaluation based on the spectrum intensity in a specific frequency band. By using the spectrum intensity, the noise component is reduced, and highly accurate evaluation is possible. In addition, a more reliable evaluation can be performed by a synergistic effect with the evaluation based on the sound pressure intensity.
  • FIG. 6 is an explanatory diagram showing an embodiment for detecting an abnormal noise of the steering system alone.
  • abnormal noise detection is performed in a state where the steering system 11 is mounted alone on the gantry 51.
  • the gantry 51 includes a rectangular bottom plate portion 53, column portions 55 erected at each corner of the bottom plate portion 53, and a frame body 57 fixed to the upper ends of these column portions 55, and the steering system 11. Is supported in the same manner as in-vehicle.
  • the gantry 51 is provided with a vibrator 61.
  • the vibrator 61 can arbitrarily apply vibration to the steering system 11 supported by the gantry 51. For example, by applying the same vibration pattern to the steering system 11 as that generated when the vehicle V travels, the steering system 11 is imparted with vibration applied during actual traveling while being supported by the gantry 51.
  • the portion to which vibration is applied may be the steering shaft 29 that is a tie rod, and the excitation direction may be not only the axial direction of the steering shaft 29 but also the vertical direction.
  • the steering gear unit 25 may be vibrated in the vertical direction.
  • each of the above parts may be individually excited or simultaneously excited. Thereby, a pseudo driving state can be reproduced in the steering system 11.
  • the sound generated from the steering system 11 is measured by using the microphone 31 and the detection device (evaluation device) 33 similar to the configuration shown in FIG. Can be evaluated. Further, the steering system 11 may be evaluated using the microphone 31 and the vibration sensor 43 at the same time. In that case, the reliability of the evaluation result can be further improved.
  • the abnormal noise generated from the steering system 11 can be detected accurately and reliably in a situation close to the time when the vehicle V is traveling without mounting the steering system 11 on the vehicle V.
  • each of the abnormal noise detection methods described above by arranging the microphone 31 at a position opposite to the end 45 of the column shaft 15, it is possible to reliably detect abnormal noise such as a rattle sound emitted from the steering system 11. In addition, it is possible to accurately detect the rattle sound, which was difficult to detect with the microphone placed at the ear position of the test driver, with an intensity suitable for human hearing. In addition, even when there is no space for installing the microphone 31 below the steering system 11, it can be easily attached to the column shaft 15 and the degree of freedom in abnormal noise inspection can be improved.
  • the present invention is not limited to the above-described embodiments, but can be modified by those skilled in the art based on combinations of the configurations of the embodiments, descriptions in the specification, and well-known techniques. Application is also within the scope of the present invention and is within the scope of protection.
  • Example 1 a sound emitted from the column shaft 15 was detected using the microphone 31 disposed at a position facing the end 45 of the column shaft 15. The distance L between the column shaft 15 and the microphone 31 was 15 mm. Further, as Comparative Example 1, sound was detected by a microphone placed at the ear position of the test driver.
  • FIG. 7 is a spectrogram of the detected sound signal in Example 1
  • FIG. 8 is a spectrogram of the detected sound signal in Comparative Example 1.
  • an intermittent peak which is a rattle sound component
  • Comparative Example 1 As shown in FIG. 7, in Example 1, an intermittent peak, which is a rattle sound component, was detected at 500 Hz to 2000 Hz.
  • Comparative Example 1 As shown in FIG. 8, intermittent peaks that are rattle sound components were not clearly detected.
  • FIG. 9 is a graph showing average spectra in Example 1 and Comparative Example 1. Comparing the average spectra of Example 1 and Comparative Example 1 from the figure, in Example 1, the dominant peak level at 500 Hz to 2000 Hz is high.
  • FIG. 10 is a graph showing a spectrum when the frequency spectrum of the sound pressure of Example 1 shown in FIG. 9 is subjected to a mask process using a bandpass filter.
  • the spectral intensity of the rattle sound component can be selectively extracted by performing mask processing with a band pass filter of 300 Hz to 5000 Hz. This makes it possible to diagnose and evaluate rattle sounds in line with human hearing.
  • a method for detecting abnormal noise of a steering system comprising: a column shaft that rotatably supports a steering wheel; and detecting abnormal noise from a steering system that steers a wheel according to rotation of the column shaft, Using a microphone disposed facing the column shaft end of the column shaft on the steering wheel side, the sound from the column shaft end is measured,
  • An abnormal sound detection method for a steering system wherein an abnormal sound detection signal caused by the steering system is generated from a sound signal output from the microphone.
  • the abnormal noise from the steering system is amplified and the S / N ratio is increased. Can be detected in an improved state. Further, since the sound signal of the measured sound has a large S / N ratio, it is possible to easily detect an abnormal sound caused by the steering system.
  • An evaluation apparatus for a steering system that includes a column shaft that rotatably supports a steering wheel, and detects abnormal noise from a steering system that steers a wheel according to the rotation of the column shaft, A microphone disposed facing the column shaft end of the column shaft on the steering wheel side; A gantry comprising a vibrator for supporting the steering system and applying vibration; While applying vibration to the pedestal by the vibrator, the sound from the column shaft end is measured using the microphone, and abnormal noise caused by the steering system is detected from the sound signal output from the microphone.
  • a steering system evaluation apparatus comprising: According to this steering system evaluation apparatus, it is possible to detect an abnormal noise during traveling of the steering system in a pseudo manner, and to easily evaluate the generated abnormal noise.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
PCT/JP2017/013227 2016-04-21 2017-03-30 ステアリングシステムの異音検出方法及びステアリングシステムの評価装置 Ceased WO2017183410A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2017538742A JP6225368B1 (ja) 2016-04-21 2017-03-30 ステアリングシステムの異音検出方法及びステアリングシステムの評価装置
CN201780012028.9A CN108700454A (zh) 2016-04-21 2017-03-30 转向系统的异常噪声检测方法和转向系统的评价装置
BR112018015685-0A BR112018015685A2 (pt) 2016-04-21 2017-03-30 método de detecção de ruído anormal de sistema de direção e dispositivo de avaliação de sistema de direção
US15/573,735 US10634647B2 (en) 2016-04-21 2017-03-30 Abnormal noise detection method of steering system and evaluation device of steering system
KR1020187021399A KR20180134840A (ko) 2016-04-21 2017-03-30 스티어링 시스템의 이음 검출 방법 및 스티어링 시스템의 평가 장치
EP17785752.1A EP3447460A4 (en) 2016-04-21 2017-03-30 METHOD FOR DETECTING ABNORMAL NOISE IN STEERING SYSTEM AND STEERING SYSTEM APPRAISAL DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016085437 2016-04-21
JP2016-085437 2016-04-21

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WO2017183410A1 true WO2017183410A1 (ja) 2017-10-26

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US (1) US10634647B2 (enExample)
EP (1) EP3447460A4 (enExample)
JP (2) JP6225368B1 (enExample)
KR (1) KR20180134840A (enExample)
CN (1) CN108700454A (enExample)
BR (1) BR112018015685A2 (enExample)
WO (1) WO2017183410A1 (enExample)

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US12424036B2 (en) * 2022-09-27 2025-09-23 Toyota Jidosha Kabushiki Kaisha Abnormal sound diagnostic system

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JP2018118621A (ja) * 2017-01-25 2018-08-02 パナソニックＩｐマネジメント株式会社 能動騒音低減装置、車両、及び、異常判定方法
JP7410935B2 (ja) 2018-05-24 2024-01-10 ザ リサーチ ファウンデーション フォー ザ ステイト ユニバーシティー オブ ニューヨーク 容量性センサ
CN109144026A (zh) * 2018-06-28 2019-01-04 郑州轻工业学院 Eps控制器的故障检测方法及故障检测装置
US10718686B2 (en) 2018-10-29 2020-07-21 GM Global Technology Operations LLC Test procedure for determining steering intermediate shaft rattle
JP7283096B2 (ja) 2019-02-04 2023-05-30 株式会社ジェイテクト 検査装置及び検査用学習モデル生成装置
JP6627004B1 (ja) 2019-02-28 2019-12-25 西川ゴム工業株式会社 グラスランの異音評価方法
DE102019209634B4 (de) * 2019-07-02 2021-08-26 Zf Friedrichshafen Ag Computerimplementiertes Verfahren zum maschinellen Lernen von Fahrbahnmarkierungen mittels Audiosignalen, Steuergerät für automatisierte Fahrfunktionen, Verfahren und Computerprogramm zum Erkennen von Fahrbahnmarkierungen
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