To provide an electrically powered suspension apparatus capable of keeping comfortable ride quality even in a case where a vehicle is traveling on a wavy road causing pitching behavior.SOLUTION: An electrically powered suspension apparatus 11 includes: an electromagnetic actuator 13 that is provided between a vehicle body and a wheel of a vehicle 10 and generates damping force for suppressing vibration of the vehicle body; a wheel speed sensor 55 that detects the wheel speed of each wheel; a wheel speed variation amount calculation section 60 that calculates a wheel speed variation amount on the basis of wheel speed detection values detected by the wheel speed sensor 55; a 3D gyro sensor 51 that detects sprung state amounts including the sprung pitching behavior of the vehicle 10; and a wheel speed variation amount correction section (an adder/subtractor section 67, a first wheel speed variation amount estimation section 71, a second wheel speed variation amount estimation section 73, and others) that estimates a variation component in the wheel speed variation amount at an unsprung position on the basis of a sprung pitch amount and corrects the wheel speed variation amount so as to reduce the estimated variation component in the wheel speed variation amount at the unsprung position.SELECTED DRAWING: Figure 4
【課題】ピッチング挙動が生じるうねり路を車両が走行中のケースであっても、乗り心地を快適に維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、車体の振動を抑制するための制振力を発生する電磁アクチュエータ13と、各車輪の車輪速を検出する車輪速センサ55と、車輪速センサ55による車輪速検出値に基づいて車輪速変動量を算出する車輪速変動量算出部60と、車両10のばね上ピッチング挙動を含むばね上状態量を検出する3Dジャイロセンサ51と、ばね上ピッチ量に基づきばね下での車輪速変動量の変化成分を推定し、当該推定したばね下での車輪速変動量の変化成分を低減するように、車輪速変動量を補正する車輪速変動量補正部(加減算部67、第1車輪速変動量推定部71、第2車輪速変動量推定部73他)と、備える。【選択図】図4
ELECTRICALLY POWERED SUSPENSION APPARATUS
電動サスペンション装置
2022-06-23
Patent
Electronic Resource
Japanese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |