To achieve an electric suspension device that can suppress roll vibration of a vehicle as much as possible, while keeping a posture of the vehicle in a nearly horizontal state, even in a scene where the vehicle is travelling on a flat curve road or on a ramp.SOLUTION: The electric suspension device comprises: an electromagnetic actuator 13, arranged side by side with a spring member provided between a vehicle body of a vehicle 10 and a wheel, which generates driving force related to damping operation and extending operation; an information acquisition part 51 that acquires roll-angle velocity of the vehicle 10; a damping force calculation part 53 that calculates target damping force which is a target value for the damping operation of the electromagnetic actuator 13; and an ECU 15 that performs driving control of the electromagnetic actuator 13 using target driving force based on the target damping force calculated by the damping force calculation part 53. The damping force calculation part 53 calculates reference damping force as a reference for the electromagnetic actuator 13 and calculates complemental damping force complementing the reference damping force, on the basis of the roll-angle velocity calculated by the information acquisition part 51, and calculates the target damping force by adding the calculated reference damping force and the complemental damping force.SELECTED DRAWING: Figure 3
【課題】平坦なカーブ路や傾斜路を走行中のシーンであっても、車両の姿勢を略水平状態に保ちながら、車両のロール振動を可及的に抑制可能な電動サスペンション装置を得る。【解決手段】車両10の車体と車輪の間に備わるばね部材に並設され減衰動作及び伸縮動作に係る駆動力を発生させる電磁アクチュエータ13と、車両10のロール角速度を取得する情報取得部51と、電磁アクチュエータ13の減衰動作の目標値である目標減衰力を算出する減衰力算出部53と、減衰力算出部53で算出した目標減衰力に基づく目標駆動力を用いて電磁アクチュエータ13の駆動制御を行うECU15と、を備える。減衰力算出部53は、電磁アクチュエータ13の基準となる基準減衰力を算出すると共に、情報取得部51で取得したロール角速度に基づいて、基準減衰力を補完する補完減衰力を算出し、当該算出した基準減衰力及び補完減衰力を加算することで目標減衰力を算出する。【選択図】図3
ELECTRIC SUSPENSION DEVICE
電動サスペンション装置
2021-02-12
Patent
Electronic Resource
Japanese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |