Method for compensating a power assist steering system control s

Details Method for compensating a power assist steering system control s Method for compensating a power assist steering system control s

1998-06-01

2000-08-08

Zanelli, Michael J.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

180422, 180442, B62D 600, B62D 5065

Patent

active

061014354

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 and vehicle steering wheel angle. A vehicle yaw rate is estimated using the monitored vehicle speed and monitored vehicle steering wheel angle. A control signal for setting the speed of the variable speed electric motor is compensated based based on the estimated vehicle yaw rate. Accordingly, a wide range of vehicle driving conditions are accommodated and vehicle fuel efficiency is improved.

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