Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2005-01-04
2005-01-04
Ip, Paul (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S611000, C318S632000, C180S443000, C180S446000, C701S041000, C701S043000, C701S080000
Reexamination Certificate
active
06838846
ABSTRACT:
An electric power steering apparatus for applying an assisting steering force to a steering mechanism of a vehicle by driving an electric motor according to a steering operation includes: an electric current command value calculation unit which calculates an electric current command value; a drive control unit which controls the drive of the electric motor based on the electric current command value; and a convergence control unit which determines a damping compensation value so that a quantity of steering operation is converged to a neutral point. The convergence control unit includes: a compensation electric current setting unit determines a basic damping compensation electric current value corresponding to the correction value of the target value, and a compensation electric current adjusting unit which adjusts the basic damping compensation electric current value based on the steering torque and the quantity of the steering operation, thereby calculating the damping compensation value.
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Ip Paul
Koyo Seiko Co. Ltd.
McGinn & Gibb PLLC
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