{
  "$type": "site.standard.document",
  "description": "A first acquisition unit acquires a road surface displacement-associated value related to up-down direction displacement of a road surface forward of a vehicle. A second acquisition unit acquires a state related to up-down direction displacement of a sprung structure or an unsprung structure of the…",
  "path": "/patents/1373663",
  "publishedAt": "2025-03-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G17/0165",
    "TOYOTA JIDOSHA KABUSHIKI KAISHA"
  ],
  "textContent": "A first acquisition unit acquires a road surface displacement-associated value related to up-down direction displacement of a road surface forward of a vehicle. A second acquisition unit acquires a state related to up-down direction displacement of a sprung structure or an unsprung structure of the vehicle. A deriving unit derives, in time series data of the road surface displacement-associated value or the state that is acquired, a ratio between a magnitude of a component of a first frequency band and a magnitude of a component of a second frequency band. A control unit executes feedforward control based on the road surface displacement-associated value that is acquired, and also executes feedback control based on the state that is acquired. A setting unit sets, when the derived ratio is no less than a threshold value, and also the feedforward control is not being appropriately executed, the feedback gain to be great.",
  "title": "SUSPENSION CONTROL SYSTEM"
}