US 2011/0035113 A1 · VEHICLE TOE ANGLE CONTROLLER

Abstract

It is possible to drive a motor (7) with a high output during a low-speed travel and perform steering with a high resolution during a high-speed travel. An electric power steering device (1) causes the motor (7) to generate an auxiliary torque based on the steering torque specified by a driver for operating steering wheels (9), thereby reducing the steering torque specified by the driver. A control device (10) uses the vehicle speed signal (Vs) from a vehicle speed sensor (11) so as to drive the motor (7) with a high output during a low-speed travel and perform steering with a high resolution during a high-speed travel without increasing the motor output. Moreover, during a low-speed travel, a large steering torque is required and during a high-speed travel, steering should be performed with a high resolution. Thus, the driver's feeling in steering is not affected.

Claims7

Dependent claims

A vehicle toe angle controller comprising:

actuators which are provided to left and right rear wheels and change toe angles of the left and right rear wheels;
a control unit which independently calculates target toe angles to be set to the left and right rear wheels, respectively, and transmits the target toe angles to the actuators as command values;
toe angle detection units which independently detect actual toe angles of the left and right rear wheels;
and
correction units each of which corrects the target toe angle to be set to one of the left and right rear wheels when a difference between the target toe angle and the actual toe angle of the other one of the left and right rear wheels is equal to or more than a predetermined value, the actual toe angle being detected by the toe angle detection unit.

2 more elements

Dependencies are inferred from the claim text.

Vehicle toe angle controller

Life of this patent

Vehicle toe angle controller

Life of this patent

Abstract

Claims7