Method for controlling the front wheel steer angle
Abstract
The method of the present invention improves the damping property of the yaw motion of the vehicle by feeding back a detected yaw rate value (r) in a dynamic sense for compensating the front wheel steer angle (8f) so as to increase the damping coefficient(Ç) of the yaw motion of the vehicle. By controlling the front wheel steer angle by accounting for not only the proportional term of the steering wheel input angle (8sw) but also the derivative term which is proportional to the steering wheel input angular speed, in the feed-forward control of the front wheel steer angle in relation with the steering operation by the driver, and by appropriately varying the control parameters of the yaw rate feed-back and the steering wheel input feed-forward, the yaw response of the vehicle can be made proportional to the steering wheel input, and the response delay in the yaw rate against the steering wheel input can be reduced to substantially zero.

Term
Term ended
Projected expiry passed 26 September 2008, 18 years ago.
- Priority
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- Published
- Projected expiry
- Today
1 sheet
Sheet 1
9 members in 5 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 24011187 | Japan | – | |
| 24011187 | Japan | A | |
| 24011187 | – | – | – |
| JP19870240111 | – | – | – |
Members9
| Document | Office | Kind | |
|---|---|---|---|
| EP0309293A2 | European Patent Office (EPO) | A2 | |
| JPS6483454A | Japan | A | |
| US4951207A | United States of America | A | |
| EP0309293A3This record | European Patent Office (EPO) | A3 | |
| CA1316237C | Canada | C | |
| JPH0725307B2 | Japan | B2 | |
| EP0309293B1 | European Patent Office (EPO) | B1 | |
| DE3854731D1 | Germany | D1 | |
| DE3854731T2 | Germany | T2 |
23 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Notification of lapseLapsedST | ST | FR | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Fr: translation filedET | ET | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0309293
- Publication, DOCDB
- 0309293
- Publication, EPODOC
- EP0309293
- Application
- 88308902
- Application, DOCDB
- 88308902
- Application, EPODOC
- EP19880308902
Titles3
- English
- Method for controlling the front wheel steer angle
- German
- Verfahren zur Steuerung des Vorderradlenkwinkels
- French
- Méthode de commande de l'angle de direction des roues avant
Classification
- CPC, 2
- B62D5/008
- B62D6/003
- IPC, 6
- B62D1 00
- B62D5 00
- B62D6 00
- B62D6 04
- B62D7 08
- B62D7 15
Designated states5
- Contracting states, 5
- Germany
- France
- United Kingdom
- Italy
- Sweden