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1. (EP2581288) Vehicle speed estimator and traction control device

Office : European Patent Office
Application Number: 13000124 Application Date: 25.12.2009
Publication Number: 2581288 Publication Date: 17.04.2013
Publication Kind : B1
Designated States: AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR
IPC:
B60W 40/10
B60K 17/35
B60T 8/172
B60T 8/66
B60W 10/12
B60W 10/18
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
W
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
40
Estimation or calculation of driving parameters for road vehicle drive control systems not related to the control of a particular sub-unit
10
related to vehicle motion
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
K
ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS; AUXILIARY DRIVES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST, OR FUEL SUPPLY, OF PROPULSION UNITS, IN VEHICLES
17
Arrangement or mounting of transmissions in vehicles
34
for driving both front and rear wheels, e.g. four wheel drive vehicles
348
having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speeds
35
including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
T
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
8
Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
17
Using electrical or electronic regulation means to control braking
172
Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
T
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
8
Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
32
responsive to a speed condition, e.g. acceleration or deceleration
58
responsive to speed and another condition or to plural speed conditions
60
using electrical circuitry for controlling the braking action, the circuitry deriving a control function relating to the dynamic of the braked vehicle or wheel
66
wherein the braking action is responsive to the difference between a computed or other theoretical vehicle speed and an actual speed of a wheel thereof
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
W
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
10
Conjoint control of vehicle sub-units of different type or different function
12
including control of differentials
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
W
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
10
Conjoint control of vehicle sub-units of different type or different function
18
including control of braking systems
CPC:
G06F 17/00
B60T 8/172
B60T 8/175
B60T 8/1769
B60T 2250/04
B60T 2250/042
B60W 40/105
B60W 2050/0056
B60W 2520/10
B60W 2520/28
Y10T 477/23
Y10T 477/6203
Y10T 477/6394
Y10T 477/6403
Y10T 477/755
Applicants: KOMATSU MFG CO LTD
Inventors: UEMATSU KOJI
HATAKE KAZUHIRO
NOMURA AZUMI
Priority Data: 09837590 25.12.2009 EP
2009002777 08.01.2009 JP
Title: (DE) Fahrzeuggeschwindigkeitsmesser und Traktionssteuerungsvorrichtung
(EN) Vehicle speed estimator and traction control device
(FR) Estimateur de vitesse de véhicule et dispositif de commande de traction
Abstract: front page image
(EN) A vehicle speed estimator includes a unit (801) 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 (801) includes: a variable filter processor (814) that performs a low-pass filter processing to the minimum rotation speed, the variable filter processor (814) having a variable time constant; and a time constant changer (810) that changes the time constant of the variable filter processor (814) in accordance with travel conditions of the construction vehicle.
Also published as:
EP2374680JPWO2010079705US20110257847JP2012192919JP2012192920EP2581287
US20130131934US20130131935CN102171085CN103342127CN103350700WO/2010/079705