Patent Number: 6,305,489

Title: Power steering apparatus

Abstract: A power steering apparatus senses a fore-and-aft acceleration of a vehicle which is expressed as a value prefixed with a sign, and a rotation speed Ri of an electric motor is reduced to reduce an assist force in accordance with the acceleration if the value of the sensed vehicle acceleration is positive, and increased to increase the assist force in accordance with the acceleration if the value of the sensed vehicle acceleration is negative (FIG. 4). With this control operation, a consistent steering feeling can be provided even at acceleration or deceleration of the vehicle.

Inventors: Kariatsumari; Yuji (Kashiwara, JP)

Assignee: Koyo Seiko Co., Ltd.

International Classification: B62D 5/06 (20060101); B62D 5/065 (20060101); B62D 6/02 (20060101); B62D 005/06 ()

Expiration Date: 10/23/2018