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1. (WO2010075212) HYDRAULIC CONTROL SYSTEM UTILIZING FEED-FOWARD CONTROL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/075212 International Application No.: PCT/US2009/068737
Publication Date: 01.07.2010 International Filing Date: 18.12.2009
IPC:
E02F 9/22 (2006.01) ,E02F 3/85 (2006.01) ,F04B 49/03 (2006.01)
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
F
DREDGING; SOIL-SHIFTING
9
Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
20
Drives; Control devices
22
Hydraulic or pneumatic drives
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
F
DREDGING; SOIL-SHIFTING
3
Dredgers; Soil-shifting machines
04
mechanically-driven
76
Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling devices
80
Component parts
84
Drives or control devices therefor
85
Applications of hydraulic or pneumatic systems
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
02
Stopping, starting, unloading, or idling control
03
by means of valves
Applicants:
CATERPILLAR INC. [US/US]; 100 N.E. Adams Street Peoria, IL 61629-9510, US (AllExceptUS)
KRAJNIK, Andrew, J. [US/US]; US (UsOnly)
SULLIVAN, Patrick, W., Jr. [US/US]; US (UsOnly)
Inventors:
KRAJNIK, Andrew, J.; US
SULLIVAN, Patrick, W., Jr.; US
Agent:
TROUSDALE, Jonathan, V.; 100 N.E. Adams Street Peoria, IL 61629-9510, US
Priority Data:
12/637,92115.12.2009US
61/193,78623.12.2008US
Title (EN) HYDRAULIC CONTROL SYSTEM UTILIZING FEED-FOWARD CONTROL
(FR) SYSTÈME DE COMMANDE HYDRAULIQUE UTILISANT UNE COMMANDE PAR ACTION DIRECTE
Abstract:
(EN) The present disclosure is directed toward a hydraulic control system. The system may have a pump and a tool actuator configured to move a tool with a flow of pressurized fluid provided by the pump. The system may further have a tool control valve configured to control the flow of pressurized fluid to the tool actuator. The system may also have a controller operably connected with the tool control valve and the pump. The controller may be configured to receive a tool movement request. The controller may further be configured to estimate a change in a flow demand across the tool control valve associated with the tool movement request. The controller may also be configured to command adjustment of a discharge flow rate of the pump based on the estimated change in flow demand to satisfy the tool movement request.
(FR) La présente invention concerne un système de commande hydraulique. Le système peut avoir une pompe et un actionneur d'outil configuré pour déplacer un outil avec un flux de liquide sous pression fourni par la pompe. Le système peut en outre avoir une vanne de commande d'outil configurée pour commander le flux de liquide sous pression amené à l'actionneur d'outil. Le système peut également avoir un dispositif de commande relié en fonctionnement à la vanne de commande d'outil et à la pompe. Le dispositif de commande peut être configuré pour recevoir une demande de mouvement d'outil. Le dispositif de commande peut en outre être configuré pour estimer un changement de demande de flux à travers la vanne de commande d'outil associée à la demande de mouvement d'outil. Le dispositif de commande peut également être configuré pour commander le réglage d'un débit de flux de refoulement de la pompe sur la base du changement estimé de la demande de flux pour répondre à la demande de mouvement d'outil.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
JP2012513574CN102292505RU2011130885RU0002520654