Vehicular running control apparatus
US6650990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2002 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Apr 4, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2720/106
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A target orbit of an inter-vehicle distance is calculated based on an inter-vehicle distance command value, a target orbit coincident-host vehicle running speed command value for according the inter-vehicle distance with the target orbit is calculated, and a reference host vehicle running speed command value is calculated by use of the target orbit and the target orbit coincident-host vehicle running speed command value. Moreover, a preceding vehicle acceleration is detected, and a value obtained by multiplying the preceding vehicle acceleration by a response time constant of a host vehicle running speed control system is added to the reference host vehicle running speed command value, thus a host vehicle running speed command value is calculated and set, whereby an influence of the preceding vehicle acceleration is removed, and a follow-up characteristic to an inter-vehicle distance target value is improved. When ride comfort is lowered due to an influence of a noise, a gain multiplied with the preceding vehicle acceleration is made variable in a range from the response time constant to zero, whereby a feedback effect of the preceding vehicle acceleration is controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.