Vehicle steering apparatus and method for controlling the same

Details Vehicle steering apparatus and method for controlling the same Vehicle steering apparatus and method for controlling the same

2006-04-25

2006-04-25

Martin, David (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S433000, C318S434000, C318S139000, C318S599000, C318S811000

Reexamination Certificate

active

07034483

ABSTRACT:
A controller of a steer-by-wire steering apparatus determines whether voltage applied to a steering motor in accordance with a current command value has reached a predetermined voltage. Based on the result, the controller selects one of the value of an actual current through the steering motor and a current command value. Based on the selected current value, an axial force applied to a steering rod is estimated. Based on the estimated axial force, a counter torque motor is controlled. Therefore, An error or oscillation occurring in the estimated steering axial force is prevented, and the driver is suppressed from further turning the steering wheel when the voltage applied to the steering motor is saturated.

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patent: 6600280 (2003-07-01), Kanda
patent: 6639379 (2003-10-01), Matsushita et al.
patent: 2002-274405 (2002-09-01), None

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