PROBLEM TO BE SOLVED: To provide a wheel-turning traveling influence information detection device of a vehicle which can create a correlation indicating a high-frequency component of a rotational speed variation pattern, and a change of a signal in a narrow pulse width, and thereby can highly accurately estimate fine changes of a tire and a road face.SOLUTION: A wheel-turning traveling influence information detection device of a vehicle comprises a rotation sensor 2 which detects a rotation signal, and a signal processing unit 3. The signal processing unit 3 corrects at least one of a pitch error of an encoder, an attachment error, and a sensor error about the rotation signal by using a sensor error correction processing part 4. A rotational speed variation pattern which is synchronized with rotation is calculated from the corrected rotation signal by a rotational speed variation pattern extraction processing part 5. A correlation between a maser pattern which is extracted from a reference rotational speed variation pattern at a prescribed pulse number, and the rotational speed variation pattern by a pattern matching calculation processing part 6. A tire state and a road face state are estimated by a tire/road face state estimation part 7 by using the correlation and the rotational speed variation pattern.SELECTED DRAWING: Figure 1
【課題】 回転速度変動パターンの高周波成分や、狭いパルス幅における信号の変化を示す相関を作成することができて、これにより、タイヤや路面の微小な変化に対してより高精度に推定可能となる車両の車輪回り走行影響情報検出装置を提供する。【解決手段】 回転信号を検出する回転センサ2と信号処理ユニット3とを備える。信号処理ユニット3は、前記回転信号につき、エンコーダのピッチ誤差、取り付け誤差、およびセンサ誤差の少なくとも一つをセンサ誤差補正処理部4で補正する。その補正後の回転信号から回転に同期した回転速度変動パターンを回転速度変動パターン抽出処理部5で算出する。基準回転速度変動パターンから所定のパルス数で抽出したマスターパターンと前記回転速度変動パターンとの相関をパターンマッチング演算処理部6で算出する。その相関および回転速度変動パターンを用いてタイヤや路面状態をタイヤ・路面状態推定部7で推定する。【選択図】 図1
WHEEL-TURNING TRAVELING INFLUENCE INFORMATION DETECTION DEVICE OF VEHICLE
車両の車輪回り走行影響情報検出装置
2016-08-18
Patent
Electronic Resource
Japanese
IPC: | 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 / B60C VEHICLE TYRES , Fahrzeugreifen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes |
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