{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "An object of the present invention is to provide a suspension control apparatus allowing a vehicle state to be easily estimated with use of a vehicle height sensor. A controller includes an external force estimation portion , which calculates an external force applied to a vehicle body from a…",
  "path": "/patents/1241542",
  "publishedAt": "2019-08-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G17/018",
    "HITACHI AUTOMOTIVE SYSTEMS, LTD."
  ],
  "textContent": "An object of the present invention is to provide a suspension control apparatus allowing a vehicle state to be easily estimated with use of a vehicle height sensor. A controller includes an external force estimation portion , which calculates an external force applied to a vehicle body from a displacement calculated from a vehicle height sensor , a vertical force calculation portion A, which calculates a vertical force of the vehicle body from the calculated external force, a sprung acceleration calculation portion B, which calculates an acceleration from the calculated vertical force, a filter portion C, which estimates a sprung speed of the vehicle body from the calculated acceleration, and a damping characteristic determination portion , which acquires a damping characteristic based on the estimated sprung speed.",
  "title": "SUSPENSION CONTROL APPARATUS"
}