VEHICULAR STEERING DEVICE

PROBLEM TO BE SOLVED: To provide a vehicular steering device capable of correcting any neutral deviation without giving sense of incongruity to a driver. SOLUTION: The vehicular steering device comprises an input shaft connected to a steering wheel, an output shaft which is connected to steered wheels to output the turning quantity, a variable steering angle control mechanism having a steering angle controlling motor capable of changing the ratio of the number of rotation of the input/output shafts, and an electric power steering mechanism which is provided on the output shaft to assist the steering force of the driver, and further comprises a neutral deviation detection means to detect the neutral deviation between the rotational position of the input shaft and the rotational position of the output shaft, a steering angle controlling motor control means to control the steering angle controlling motor so as to maintain the rotational position of the input shaft, and a first neutral deviation correction control means to output the correction control quantity to a power motor based on the neutral deviation detected by the neutral deviation detection means. COPYRIGHT: (C)2006,JPO&NCIPI