PROBLEM TO BE SOLVED: To improve riding comfort of a vehicle.SOLUTION: An attenuation force control device of a suspension according to one embodiment, for instance, which controls a damper which can change attenuation force according to a command signal, comprises: an estimation portion that estimates relative speed of a wheel to a vehicle body; an attenuation force calculation portion that calculates target attenuation force indicating attenuation force that the damper should output, on the basis of the relative speed and acceleration information from an acceleration sensor provided in the vehicle body; an output portion that outputs to the damper a command signal corresponding to the target attenuation force; an attenuation force estimation portion that calculates estimated attenuation force indicating an estimated value of the attenuation force to be outputted from the damper, on the basis of the relative speed and a command signal corresponding to the target attenuation force; and a friction force calculation portion that calculates friction force to be generated in the damper, on the basis of the relative speed. The estimation portion further estimates the relative speed on the basis of the estimated attenuation force and the friction force.SELECTED DRAWING: Figure 1
【課題】車両の乗り心地を改善する。【解決手段】実施形態の減衰力制御装置は、例えば、指令信号に応じて減衰力を変更可能なダンパーを制御するサスペンションの減衰力制御装置において、車体に対する車輪の相対速度を推定する推定部と、相対速度と、車体に設けられた加速度センサからの加速度情報と、に基づいて、ダンパーが出力すべき減衰力を示した目標減衰力を算出する減衰力算出部と、目標減衰力に対応する指令信号を、ダンパーに出力する出力部と、相対速度と、目標減衰力に対応する指令信号と、に基づいて、ダンパーから出力される減衰力の推定値を示した推定減衰力を算出する減衰力推定部と、相対速度に基づいて、ダンパーで生じる摩擦力を算出する摩擦力算出部と、を備え、推定部は、さらに、推定減衰力と、摩擦力と、に基づいて、相対速度を推定する。【選択図】図1
ATTENUATION FORCE CONTROL DEVICE
減衰力制御装置
2018-04-12
Patent
Elektronische Ressource
Japanisch
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
CONTROL DEVICE OF ATTENUATION FORCE VARIABLE DAMPER AND ATTENUATION FORCE VARIABLE DAMPER SYSTEM
Europäisches Patentamt | 2016
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