×

Electric damper

  • US 8,042,818 B2
  • Filed: 03/03/2009
  • Issued: 10/25/2011
  • Est. Priority Date: 03/04/2008
  • Status: Active Grant
First Claim
Patent Images

1. An electric damper comprising:

  • a conversion unit that converts a vertical motion of a wheel into a rotation of an electric motor;

    a wheel vertical motion detector that detects a vertical motion of the wheel; and

    a damping unit that controls the electric motor based on a signal from the wheel vertical motion detector to change damping force to damp vibration of a vertical motion of the wheel in a predetermined frequency band between a first predetermined frequency and a second predetermined frequency greater than the first predetermined frequency, whereinthe damping unit sets, in accordance with a vehicle speed, the predetermined frequency band in which the damping force is changed.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×