{
  "$type": "site.standard.document",
  "description": "A hands-off detection device includes: a first steering angle acquisition unit (10) configured to acquire a first steering angle (θh) of a steering wheel (1); a second steering angle acquisition unit (11) configured to acquire a second steering angle (θc) of a steering mechanism connected to the…",
  "path": "/patents/1412167",
  "publishedAt": "2023-01-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B62D1/286",
    "NSK LTD [JP]"
  ],
  "textContent": "A hands-off detection device includes: a first steering angle acquisition unit (10) configured to acquire a first steering angle (θh) of a steering wheel (1); a second steering angle acquisition unit (11) configured to acquire a second steering angle (θc) of a steering mechanism connected to the steering wheel (1) via a torsion bar (3); a steering angle estimation unit (50) configured to obtain an estimation angle (θhe) of the first steering angle (θh) in a state where the steering wheel (1) is not being grasped on a basis of the second steering angle (θc); a difference calculation unit (51) configured to calculate an angle difference (Δθ) between the first steering angle (θh) and the estimation angle (θhe); a frequency analysis unit (52) configured to calculate a frequency component (dfi) of the angle difference (Δθ); and a grasping state determination unit (54) configured to determine a grasping state of the steering wheel on a basis of the frequency component (dfi) and a reference frequency component (dfri) being the frequency component of the angle difference (Δθ) in the state where the steering wheel (1) is not being grasped.",
  "title": "HANDS-OFF DETECTION DEVICE AND STEERING DEVICE"
}