| 摘要 |
PURPOSE:To improve the maneuverability of a car at low speed ever so better, by making a low-speed range function where steering for both front and rear wheels comes to the same phase and smoothly shifts to a car speed function, selectable by hand, in case of a device which sets a steering ratio of both front and rear wheels down to the car speed function and controls it variably. CONSTITUTION:A proper control signal commensurate to a car speed is outputted to a motor 31 by a computer 33 inputting each output signal out of a car speed sensor 34 and a manual select switch 41 selecting a position sensor (actual steering ratio sensor) 35 and a steering ratio, and relating a rear wheel to steerage of a front wheel by c.w. or c.c.w. rotation of this motor 31, they are steered so as to become opposite phase at low speed but the same phase at high speed, respectively. The select switch 41 is made up of installing pushbuttons 36-40 selecting either of characteristics 1k, 2k...nk, *k of plural preset steering ratio functions. And, when the pushbutton 40 is pressed, it comes to the same phase at low speed and thereby the steering ratio characteristic *k to be connected to the steering ratio characteristic nk smoothly is made selectable. |
