{
  "$type": "site.standard.document",
  "description": "Provided is an abnormality detection method for a vehicle body tilt control device that makes it possible to determine which air spring has an air supply/exhaust abnormality. The present invention includes a model creation step for preparing a state estimation model for each of the front and rear…",
  "path": "/patents/939316",
  "publishedAt": "2016-08-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G99/00",
    "NIPPON STEEL & SUMITOMO METAL CORP [JP]"
  ],
  "textContent": "Provided is an abnormality detection method for a vehicle body tilt control device that makes it possible to determine which air spring has an air supply/exhaust abnormality. The present invention includes a model creation step for preparing a state estimation model for each of the front and rear vehicle halves 10 into which a vehicle is divided, and an abnormality detection step for applying a state estimation technique to the state estimation model to detect which one of the air springs 3 has an air supply/exhaust abnormality. The state estimation model is a model where, when flow rate command values for air supplied to/exhausted from the air springs included in each vehicle half are input, each of the input flow rate command values for air supplied to/exhausted from the air springs 3 is multiplied by a virtual gain and the results are averaged, and, based on the averages, the average of the heights of the air springs is output, where each virtual gain is included as a state variable.",
  "title": "ABNORMALITY DETECTION METHOD FOR CAR BODY INCLINATION CONTROL DEVICE"
}