To accurately estimate oil temperature of a shock absorber (damper).SOLUTION: A damping force control device (suspension ECU 21) controlling damping force of a damper of a vehicle comprises: an operation value calculation part 211 which calculates operation amount of the damper, operation time of the damper, operation speed of the damper and input frequency into unsprung mass of the vehicle; an operation frequency calculation part 212 which calculates operation frequency of the damper based on the input frequency; an oil temperature estimation part 213 which estimates oil temperature of the damper at least based on the operation amount of the damper, the operation time, the operation speed, and the operation frequency; and a control value calculation part 214 which calculates a control value to adjust the damping force at least according to the oil temperature.SELECTED DRAWING: Figure 5
【課題】 より正確にショックアブソーバ(ダンパ)内の油温推定を行う。【解決手段】 車両が備えるダンパの減衰力を制御する減衰力制御装置(サスペンションECU21)であって、ダンパの作動量、ダンパの作動時間、ダンパの作動速度および車両のばね下への入力周波数を算出する作動値算出部211と、入力周波数からダンパの作動頻度を算出する作動頻度算出部212と、ダンパの作動量、作動時間、作動速度および作動頻度を少なくとも用いてダンパの油温を推定する油温推定部213と、少なくとも油温に応じて減衰力を調整する制御値を算出する制御値算出部214と、を備える。【選択図】 図5
DAMPING FORCE CONTROL DEVICE AND DAMPING FORCE CONTROL METHOD
減衰力制御装置および減衰力制御方法
2024-04-23
Patent
Elektronische Ressource
Japanisch
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
CONTROL DEVICE FOR DAMPING FORCE VARIABLE DAMPER AND DAMPING FORCE VARIABLE DAMPER SYSTEM
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