To provide an abnormal noise generation location specification method with which a generation location of an abnormal noise generated in a vehicle can be specified with high accuracy.SOLUTION: When driving for reproducing an abnormal noise generated in a vehicle VC is performed, a CPU 72 records the sound. For a plurality of candidate components to be candidates for an abnormal noise generation location, of components constituting the vehicle VC, the CPU 92 searches for an individual difference variable that is information on sounds unique to the individuals at shipment. The CPU 92 calculates a value of an output variable indicating the abnormal noise generation location with the individual difference variable and a sound variable extracted from a sound signal as input to mapping defined by mapping data 93b.SELECTED DRAWING: Figure 1
【課題】車両に生じた異音の発生箇所を高精度に特定できるようにした異音の発生箇所特定方法を提供する。【解決手段】CPU72は、車両VCで生じた異音を再現する運転がなされる場合、その音を録音する。CPU92は、車両VCを構成する部品のうちの異音の発生箇所の候補となる複数の候補部品について、製品出荷時のその個体特有の音に関する情報である個体差変数を探索する。CPU92は、個体差変数と音信号から抽出した音変数とを写像データ93bによって規定される写像への入力として、異音の発生箇所を示す出力変数の値を算出する。【選択図】図1
ABNORMAL NOISE GENERATION LOCATION SPECIFICATION METHOD, ABNORMAL NOISE GENERATION LOCATION SPECIFICATION SYSTEM, ABNORMAL NOISE GENERATION LOCATION SPECIFICATION DEVICE, ABNORMAL NOISE GENERATION LOCATION NOTIFICATION DEVICE, AND ON-VEHICLE DEVICE
異音の発生箇所特定方法、異音の発生箇所特定システム、異音の発生箇所特定装置、異音の発生箇所通知装置、および車載装置
2021-11-25
Patent
Electronic Resource
Japanese
IPC: | G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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