Patent ID: 9079602
Filing Date: 2015-07-14
Classification: B62D

Abstract:
1. A steering system comprising: a steering member provided in a vehicle and configured to be rotated; an adjustment apparatus configured to adjust a rotary direction vibration of the steering member; and a steering control apparatus configured to control the adjustment apparatus, in accordance with at least one operating condition of the vehicle, so as to adjust the rotary direction vibration, wherein the adjustment apparatus is configured to adjust a degree by which the rotary direction vibration is transmitted to the steering member, the adjustment apparatus is configured to adjust the rotary direction vibration by outputting an assist steering force for supplementing a steering force input into the steering member by the driver, the steering control apparatus is configured to switch between a plurality of filter characteristics of a filter used to calculate the assist steering force, in accordance with the operating condition of the vehicle, the plurality of the filter characteristics having different degrees with which a signal corresponding to the rotary direction vibration is likely to be passed through the filter such that a magnitude of the signal passed through the filter at any given frequency is different for each of the plurality of filter characteristics, the at least one operating condition includes at least one of a speed of the vehicle or an absolute value of an acceleration acting on the vehicle, the steering control apparatus controls the adjustment apparatus to increase the rotary direction vibration when the speed of the vehicle is relatively high, relative to the rotary direction vibration when the speed is relatively low, and the steering control apparatus controls the adjustment apparatus to increase the rotary direction vibration when the absolute value of an acceleration acting on the vehicle is relatively large, relative to the rotary direction vibration when the absolute value of the acceleration is relatively small.