| 摘要 |
<p>PURPOSE: To provide an electric driven power steering device eliminating a feeling of physical disorder in operating a steering wheel when an ignition key is turned on in a condition that steering torque is generated. CONSTITUTION: When an ignition key is detected on, in a steering angular speed detector 32, a pulse, detected by a pulse generator 31 provided in a shaft of a motor 10, is differentiated by time to detect a steering angular speedωa . In a proportional arithmetic device 33, the input steering angular speedωa is multiplied by a prescribed constant k, to calculate -kωa as a current correction value If in accordance with a steering angular speed in this point of time. In an adder 30, a current command value I1 in accordance with steering torque is corrected by the current correction value If , to output a current command value I which is a new control target value. Since the motor 10 is controlled by the corrected current command value I until a prescribed time elapsed, when the ignition key is turned on, a feeling of physical disorder is prevented from being given to operating a steeling wheel.</p> |
