VIBRATION DETECTION DEVICE

PROBLEM TO BE SOLVED: To improve detection accuracy of brake judder.SOLUTION: A vibration detection device 10 detects brake judder occurring in a vehicle. When any of a plurality of weight sensors 14 provided in respective wheels of the vehicle is fluctuated periodically during braking of the vehicl...

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Hauptverfasser:	TOYODA HIROMITSU, KODERA HARUHIRO, SHIMOZATO SHUNJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve detection accuracy of brake judder.SOLUTION: A vibration detection device 10 detects brake judder occurring in a vehicle. When any of a plurality of weight sensors 14 provided in respective wheels of the vehicle is fluctuated periodically during braking of the vehicle, a determination section 124 determines that the brake judder occurs in the wheel provided with the fluctuated weight sensor 14. The determination section 124 performs band-pass filter processing of a detection value of the weight sensor 14 during the braking by using a band-pass filter having a predetermined peak frequency, and determines that the brake judder occurs when the detection value after the band-pass filter processing exceeds a predetermined threshold value.SELECTED DRAWING: Figure 1 【課題】ブレーキジャダーの検出精度を向上させる。【解決手段】振動検出装置１０は、車両に発生するブレーキジャダーを検出する。判定部１２４は、車両の各車輪に設けられた複数の重量センサ１４のいずれかが、車両の制動中に周期的に変動した場合、当該重量センサ１４が設けられた車輪でブレーキジャダーが発生していると判定する。判定部１２４は、制動中の重量センサ１４の検出値に所定のピーク周波数を有するバンドパスフィルタを用いてバンドパスフィルタ処理を行い、バンドパスフィルタ処理後の検出値が所定の閾値を超えている場合、ブレーキジャダーが発生していると判定する。【選択図】図１