Processing

Please wait...

Settings

Settings

1. US20130131935 - Vehicle speed estimator and traction control device

Office United States of America
Application Number 13740961
Application Date 14.01.2013
Publication Number 20130131935
Publication Date 23.05.2013
Grant Number 08682535
Grant Date 25.03.2014
Publication Kind B2
IPC
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
R
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
22
Safety belts or body harnesses in vehicles
B60R 22/00
CPC
G06F 17/00
B60T 8/172
B60T 8/175
B60T 8/1769
B60T 2250/04
B60T 2250/042
Applicants Uematsu Koji
Komatsu Ltd.
Hatake Kazuhiro
Nomura Azumi
Inventors Uematsu Koji
Hatake Kazuhiro
Nomura Azumi
Agents Fish & Richardson P.C.
Priority Data 2009-002777 08.01.2009 JP
Title
(EN) Vehicle speed estimator and traction control device
Abstract
(EN)

A vehicle speed estimator includes a unit that selects a minimum rotation speed among rotation speeds of wheels detected by a rotation speed detector and calculates a reference wheel speed of a construction vehicle at every predetermined time. The unit includes: a variable filter processor that performs a low-pass filter processing to the minimum rotation speed, the variable filter processor having a variable time constant; and a time constant changer that changes the time constant of the variable filter processor in accordance with travel conditions of the construction vehicle.