{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "In order to provide an electric assist bicycle capable of performing a smooth electric assist traveling with a good feeling by generating an assist force having high follow-up characteristics even on an uphill road, the following control is carried out. A pedaling force F L , a bicycle speed V, a…",
  "path": "/patents/1015372",
  "publishedAt": "2011-03-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L15/20",
    "SUNSTAR ENGINEERING INC [JP]"
  ],
  "textContent": "In order to provide an electric assist bicycle capable of performing a smooth electric assist traveling with a good feeling by generating an assist force having high follow-up characteristics even on an uphill road, the following control is carried out. A pedaling force F L , a bicycle speed V, a crank angle ¸, a start angle ¸s, a maximum pedaling force angle ¸m0, and an end angle ¸e0 are detected (step 350). An assist force is calculated from the pedaling force F L and the bicycle speed V (step 352), and a motor control is performed (step 354). A determination is made whether the bicycle is traveling on an uphill road based on the pedaling force F L and the crank angle ¸ during performing an assist action (step 356). During it is determined that the bicycle is traveling on the uphill road, a re-calculation of an uphill assist force and the motor control are carried out on the basis of the pedaling force F L , the bicycle speed V, and the crank angle ¸ when the crank angle reaches a angle for starting applying an uphill assist force (affirmative determination at step 358) (step 360).",
  "title": "ELECTRIC POWER ASSISTED BICYCLE"
}