Motor vehicles – Steering gear – With fluid power assist
Reexamination Certificate
2005-09-20
2005-09-20
DePumpo, Daniel G. (Department: 3611)
Motor vehicles
Steering gear
With fluid power assist
C180S417000
Reexamination Certificate
active
06945351
ABSTRACT:
In a power steering apparatus, a basic-target-rotational-speed setting portion42sets a basic target rotational speed Rb of an electric motor27on the basis of the vehicle speed and the angular velocity of steering. A temperature-coefficient setting portion43sets a temperature coefficient α which becomes smaller with an increase in the temperature. A target-rotational-speed setting portion44sets a target rotational speed R of the electric motor27on the basis of the formula R=α·Rb. A motor-drive control portion45controls a drive circuit28so that this target rotational speed R will be attained.
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DePumpo Daniel G.
Koyo Seiko Co. Ltd.
McGinn & Gibb PLLC
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