Road surface condition estimating apparatus and variation reduction processing apparatus
US6324461A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1998 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Jun 29, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2210/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Disclosed is a road surface condition estimating apparatus including: a converting portion having a table showing a relation among a vehicle speed, a braking force and a resonance gain for each road surface condition and converting a detected value of the input vehicle speed and braking force into a resonance gain on the basis of the table, a subtracting device for computing each of differences between the resonance gain for each road surface condition converted by each of the converting portions and the detected value of the input resonance gain, and a minimum value selecting portion selecting the minimum value among the computed values in the subtracting device and outputting an information of the road surface condition corresponding to the converting portion giving the minimum value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.