Title:
VEHICLE SPEED DEPENDENT COMPENSATOR FOR ELECTRIC STEERING SYSTEMS
Document Type and Number:
WIPO Patent Application WO2004087482
Kind Code:
A3
Abstract:
An electric power steering system comprising: an electric motor (46) disposed in a vehicle to apply torque to a steerable wheel (26); a torque sensor (28) disposed in the vehicle for detecting a steering wheel torque and generating a torque signal (18) indicative thereof; a vehicle speed sensor generating a vehicle speed signal (21); a controller (16) coupled to the torque sensor (28), the vehicle speed sensor and the electric motor (46). The controller (16) generates a scheduled compensated torque command (22) to the electric motor (46). The scheduled compensated torque command is based on at least one of: a torque command signal responsive to the torque signal (22); a compensated torque command signal; and a blend of the torque command signal and the compensated torque command signal. At least one of the torque command signal, the compensated torque command signal and the blend is based on the vehicle speed signal.
Inventors:
KATCH GREGORY JAMES (US)
WITTIG WILLIAM HENRY (US)
PATTOK KATHRYN LYNN (US)
KLEINAU JULIE ANN (US)
WITTIG WILLIAM HENRY (US)
PATTOK KATHRYN LYNN (US)
KLEINAU JULIE ANN (US)
Application Number:
PCT/US2004/009063
Publication Date:
September 15, 2005
Filing Date:
March 25, 2004
Export Citation:
Assignee:
DELPHI TECH INC (US)
KATCH GREGORY JAMES (US)
WITTIG WILLIAM HENRY (US)
PATTOK KATHRYN LYNN (US)
KLEINAU JULIE ANN (US)
KATCH GREGORY JAMES (US)
WITTIG WILLIAM HENRY (US)
PATTOK KATHRYN LYNN (US)
KLEINAU JULIE ANN (US)
International Classes:
B62D5/04; (IPC1-7): H02P7/00; B62D1/00; G05D3/00
Foreign References:
| US4865148A | 1989-09-12 | |||
| US20030055546A1 | 2003-03-20 | |||
| US20020107621A1 | 2002-08-08 | |||
| US6370460B1 | 2002-04-09 |
Other References:
See also references of EP 1627464A4
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