Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1998-06-01
2000-05-30
Martin, David
Electricity: motive power systems
Limitation of motor load, current, torque or force
318446, 318465, 180422, 180417, H02K 1732
Patent
active
060694602
ABSTRACT:
A method is provided for controlling an electro-hydraulic power assist steering system including a variable-speed electric motor for pumping hydraulic fluid in the system. The method includes monitoring vehicle speed, vehicle steering wheel angle, and vehicle steering wheel turning rate. A parking mode or a driving mode is selected based upon the monitored vehicle speed. The speed of the variable speed electric motor is controlled based upon the monitored vehicle steering wheel turning rate if the parking mode is selected. If the driving mode is selected, the speed of the variable speed electric motor is controlled based upon the monitored vehicle speed, vehicle steering wheel angle and vehicle steering wheel angle turning rate. Accordingly, a wide range of vehicle driving conditions are accommodated and vehicle fuel efficiency is improved.
REFERENCES:
patent: 4941097 (1990-07-01), Karnopp et al.
patent: 5156229 (1992-10-01), Yasui et al.
patent: 5168949 (1992-12-01), Emori et al.
patent: 5267627 (1993-12-01), Frank et al.
patent: 5279380 (1994-01-01), Frank et al.
patent: 5289894 (1994-03-01), Yoshiyuki Yasui
patent: 5367235 (1994-11-01), Fukudome
patent: 5372214 (1994-12-01), Haga et al.
patent: 5508919 (1996-04-01), Suzuki et al.
patent: 5513720 (1996-05-01), Yamamoto et al.
patent: 5641033 (1997-06-01), Langkamp
patent: 5713429 (1998-02-01), Doolittle
patent: 5749431 (1998-05-01), Peterson
Baughn Bernard Dale
Filippi Theodore Joseph
Grabowski John Robert
Stuntz Ross Maxwell
Brown Gregory P.
Ford Global Technologies Inc.
Martin David
May Roger L.
LandOfFree
Method for controlling an electro-hydraulic power assist steerin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for controlling an electro-hydraulic power assist steerin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for controlling an electro-hydraulic power assist steerin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1912765