A motor-driven power steering control apparatus assuring consistently
comfortable steering operation of a motor vehicle includes a steering
state detector (10), a motor drive command value arithmetic device (20),
a trouble detector (40), a motor drive command value corrector (51, 52)
for decrementing a motor drive command value outputted from the motor
drive command value corrector (51) from a predetermined initial value as
a function of time lapse when a trouble detection signal is outputted
from the trouble detector (40), and an element (30) for driving an assist
motor in conformance with the output of the motor drive command value
corrector (51, 52). The motor drive command value corrector (51, 52)
includes a low-pass filter (515) for smoothing the motor drive command
value. A value acquired through the low-pass filter (515) is employed as
the predetermined initial value.