{
  "$type": "site.standard.document",
  "description": "A method for judging road surface conditions, comprising the steps of: detecting rotational information of tires; storing the rotational information of the respective tires; calculating a vehicle velocity; calculating an acceleration/deceleration of the vehicle; calculating a slip ratio of…",
  "path": "/patents/1096699",
  "publishedAt": "2003-04-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T8/172",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "A method for judging road surface conditions, comprising the steps of: detecting rotational information of tires; storing the rotational information of the respective tires; calculating a vehicle velocity; calculating an acceleration/deceleration of the vehicle; calculating a slip ratio of left-sided front and rear wheels and right-sided front and rear wheels and a slip ratio of front and rear wheels, respectively; calculating an amount of fluctuation in differences in slip ratios between the right and left wheels; obtaining a linear regression coefficient and a correlation coefficient between the slip ratio of the front and rear wheels and the acceleration/deceleration of the vehicle; and setting a threshold for judging road surface conditions.",
  "title": "Method and apparatus for judging road surface conditions"
}