An electromagnetic suspension apparatus for an automotive vehicle, employs
an electromagnetic actuator interleaved between a sprung mass and an
unsprung mass and arranged in parallel with a suspension spring element,
and an electric motor built in the electromagnetic actuator for driving
the electromagnetic actuator. A motor controller calculates a
displacement input, such as a suspension stroke acceleration and a
suspension velocity, transmitted to the electromagnetic actuator, and
controls the motor to bring a suspension damping force closer to a
desired damping force suited for the displacement input. The motor
controller calculates an internal inertia force of the electromagnetic
actuator, and corrects or compensates for a motor output by the internal
inertia force of the electromagnetic actuator.