To provide a polynomial which enhances the estimation accuracy of acceleration.SOLUTION: A parameter calculation part 3 comprises; an aggregated torque specification part 325 for specifying aggregated torque which is obtained by aggregating shaft torque outputted by an output shaft of an engine of a vehicle, and brake torque at a brake operation; a speed specification part 326 for specifying a vehicle speed of the vehicle and the acceleration of the vehicle; a gradient specification part 327 for specifying a gradient of a road on which the vehicle travels; and a parameter calculation part 328 for calculating a parameter of each item of a polynomial for making the aggregated torque, the vehicle speed and the acceleration of the vehicle with the gradient as a variable approximate to one another on the basis of the aggregated torque which is specified by the torque specification part, the vehicle speed and the acceleration which are specified by the speed specification part, and the gradient which is specified by the gradient specification part.SELECTED DRAWING: Figure 1
【課題】加速度の推定精度を高める多項式を提供する。【解決手段】パラメータ算出装置3は、車両のエンジンの出力軸が出力する軸トルクと、ブレーキ作動時の制動トルクとを合算した合算トルクを特定する合算トルク特定部325と、車両の車速と、車両の加速度とを特定する速度特定部326と、車両が走行する道路の勾配を特定する勾配特定部327と、合算トルクと、車速と、勾配とを変数とする車両の加速度を近似する多項式の各項のパラメータを、トルク特定部が特定した合算トルクと、速度特定部が特定した車速及び加速度と、勾配特定部が特定した勾配とに基づいて算出するパラメータ算出部328と、を備える。【選択図】図1
PARAMETER CALCULATION DEVICE AND PARAMETER CALCULATION METHOD
パラメータ算出装置及びパラメータ算出方法
2021-09-13
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 / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes |
European Patent Office | 2022
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