To improve estimation accuracy of a tire drive force in a vehicle.SOLUTION: A tire drive force first estimator 12 of a tire drive force estimation device 10 calculates a first estimation value of a tire drive force based on the relation between acceleration of a vehicle and the tire drive force. A tire drive force second estimator 14 calculates a second estimation value of the tire drive force based on the relation between the rotation of a drive shaft of the vehicle and the tire drive force. A driven wheel brake μ disturbance model part 16, a drive wheel brake μ disturbance model part 18 and a road grade disturbance model part 20 set a disturbance model comprising a time series waveform. A pattern matching part 22 evaluates the magnitude that each disturbance imposes on an error by matching the time series wave of a difference between the first estimation value and the second estimation value with the disturbance model. A subtractor 26 outputs the value of the tire drive force in which the error is corrected.SELECTED DRAWING: Figure 1
【課題】車両におけるタイヤ駆動力の推定精度を向上させる。【解決手段】タイヤ駆動力推定装置10のタイヤ駆動力第1推定器12は、車両の加速度とタイヤ駆動力との関係に基づいて、タイヤ駆動力の第1推定値を算出する。タイヤ駆動力第2推定器14は、車両の駆動軸の回転と前記タイヤ駆動力との関係に基づいて、タイヤ駆動力の第2推定値を算出する。従動輪ブレーキμ外乱モデル部16、駆動輪ブレーキμ外乱モデル部18、道路勾配外乱モデル部20は、時系列波形からなる外乱モデルを設定する。パターンマッチング部22は、第1推定値と第2推定値の差分の時系列波形と、外乱モデルとをマッチングさせて、各外乱が誤差に与える大きさを評価する。減算器26は、誤差を補正したタイヤ駆動力の値を出力する【選択図】図1
TIRE DRIVE FORCE ESTIMATION DEVICE, AND TIRE DRIVE FORCE ESTIMATION PROGRAM
タイヤ駆動力推定装置、タイヤ駆動力推定プログラム
2021-02-25
Patent
Electronic Resource
Japanese
IPC: | G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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