| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce influence between mutual ones of an inertia compensating signal, a damper compensating signal and a base signal. <P>SOLUTION: This electric power steering device includes a base signal arithmetic operation part 220 for arithmetically operating the base signal (D<SB>T</SB>) in response to at least steering torque and a damper compensating signal arithmetic operation part 225 for arithmetically operating the damper compensating signal in response to a rotating speed or a steering speed of an electric motor, and imparts steering assisting force by driving the electric motor by a target signal determined by compensating for the base signal by the damper compensating signal and the inertia compensating signal. The electric power steering device further includes an inertia compensating signal arithmetic operation part 215 for arithmetically operating the inertia compensating signal based on at least the steering torque, and an adder 250 for adding a compensating signal of compensating for a base signal by the damper compensating signal and a differential means by dividing a characteristic of the inertia compensating signal arithmetic operation part into a characteristic of the differential means and a characteristic of a signal stability improving means. The signal stability improving means is arranged on the output side of the adder. <P>COPYRIGHT: (C)2011,JPO&INPIT |
