POWER SUSPENSION DEVICE

• Main Authors: ONADA KAZUYA, YANAGI TAKASHI, YAMAZAKI RYOSUKE
• Format: Patent
• Language: English; Japanese
• Published: 17.04.2023
• Subjects: PERFORMING OPERATIONS; TRANSPORTING; VEHICLE SUSPENSION ARRANGEMENTS; VEHICLES IN GENERAL

To provide a power suspension device which can keep comfortable ride quality of a vehicle by suppressing lag between real input timing and adjusting start timing.SOLUTION: A power suspension device 11 comprises: an electromagnetic actuator 13 which is arranged between a vehicle body of a vehicle 10 and a wheel and generates load to attenuate vibration of the vehicle body; an information acquisition part 41 which acquires information of a road surface state in front of the vehicle 10; a target load calculation part 43 which calculates target load related to preview control based on the road surface state; and a load control part 45 which performs load control of the electromagnetic actuator 13. The target load calculation part 43 predicts real input timing based on the vehicle speed, and calculates adjusting start timing related to suspension property based on the predicted real input timing. When predicting the real input timing based on the vehicle speed, correction coefficient α to correct fluctuation component of the vehicle speed is applied to the vehicle speed.SELECTED DRAWING: Figure 3 【課題】実入力タイミングと調整開始タイミングとの間に生じるズレを抑制して車両の乗り心地を快適に保持可能な電動サスペンション装置を提供する。【解決手段】電動サスペンション装置１１は、車両１０の車体と車輪の間に設けられ、車体の振動を減衰するための荷重を発生する電磁アクチュエータ１３と、車両１０前方の路面状態の情報を取得する情報取得部４１と、路面状態に基づくプレビュー制御に係る目標荷重を算出する目標荷重算出部４３と、電磁アクチュエータ１３の荷重制御を行う荷重制御部４５と、を備える。目標荷重算出部４３は、前記車速に基づき実入力タイミングを推測すると共に、当該推測した実入力タイミングに基づいてサスペンション特性に係る調整開始タイミングを算出する。車速に基づき実入力タイミングを推測するに際し、車速の変動成分を補正するための補正係数αを当該車速に適用する。【選択図】図３