Patent ID: 7702448

Claim:
A driving amount controller for controlling a driving amount of a controlled system by way of an output of a motor, comprising: a target driving amount input device adapted to input a target driving amount (DTHR) for said controlled system; and an ECU adapted to transmit to said motor a control signal for controlling the output of said motor with an output characteristic according to said target driving amount (DTHR), wherein said ECU performs either one or both of a process of increasing the output of said motor by increasing a duty ratio of said control signal according to an increase in a speed variation (ADTHR) of said target driving amount (DTHR) when said speed variation is positive (ADTHR) and a process of decreasing the output of said motor by increasing said duty ratio of said control signal according to a decrease in said speed variation (ADTHR) when an absolute value of said speed variation (ADTHR) is decreasing.