JPS5932562A - Steering control apparatus for vehicle - Google Patents

Abstract

PURPOSE:To ensure safe steering against a slippery road by controlling steering torque on the basis of the travel speed signal and rain detecting signal of a vehicle. CONSTITUTION:A circuit 2 for setting a rain variable corresponding to each operational position of a wiper switch 1 generates the output of a predetermined digital value x. Also, a circuit 4 for setting a vehicle speed variable generates the output of a digital value y per unit time of the pulse signal from a vehicle speed sensor 3. An electric calculating circuit 5 receives said digital values x, y to figure out steering auxiliary torque z determined by the vehicle speed and rain condition at that time. This auxiliary torque z is subjected to pulse width modulation and has its output sent to a drive circuit 6 which controls a linear solenoid 7 for regulating the opening of a hydraulic valve provided on an auxiliary power mechanism. In this case while said auxiliary torque z is reduced with the increase of the vehicle speed, the more the wiper is operated with high speed the more the auxiliary torque z is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on the 1M operation of the 1-head rudder Bj l't', and the 1-1 run of yp i 1 1 on the FX-steered IM rudder.
The applied force found under the condition is applied to the 1M rudder control device which provides it through the electro-mechanical variable 1 (!! device).

In this case, an electrical signal from the vehicle speed sensor is generally used to transfer the torque between the C1IM rudder and the steering wheel. Adjust the power supply, for example, the hydraulic valve, the mechanical change 1!1 device, etc. with the solenoid, etc., and then set the car on a steady run. (!l: N 1
．． L fulli l! Jl Power! j: I'll change 1 檪 ((I-1, 111 to ii't ilI
, b: 7j21 (1 is j ('i il・1,゛) is "ζ". However, this is) let, l#l
1fij state! For i and ff (but; 3 (because of the speed of both i and C response, 1111 surface force 'ti')
Since the same IM rudder I and torque act on the same IM rudder wheel in the same condition and in the state where it is not easy to slip and when it is not so, the same IM rudder I and torque act on the 1st steering wheel in the same state and in the state where it is not. There was a problem in which the relationship between vehicle speed and Teisuke torque had to be set.

The present invention is based on the above-mentioned problem by looking at 5R, 1, detecting the ease of getting 1 (1) on the IIA side, and then
M1%, by correcting the force acting on the wheels (Jj)-), it is possible to drive as much as possible when picking up vehicles (on difficult roads). The l'I- world of 1 is lighter, and on slippery roads it is less heavy. lll i'' device Clit (1(・doing is LI-like v′), therefore, the present invention i;t, Il,′f rain LJ
% fii! niLt,, 1° 1'', y,
1. Due to the detection. (−1 electrically 1・flt'
, I'i'i'i''
It's "si".

In addition, in the present invention, the steering operation device and the 1m steering wheel are mechanically separated.
11C type steering control device
□ 0, , , 1 ゜ Figure 11 shows an embodiment of the present invention.
□ is vehicle glue 1. <Sweet,, Goo Ri, 1 Wipa blade operation ・Speed 111g1z Lays, Inj
' (intermittent operation), and Of [(, (l stop) IM
'(y position and electrically connected to a known soiper drive controller in °C. 2 sets the rainfall variable.
By the way, the logic of diode matrix etc.+n+1?・
□Operation 1 position II of wiper switch L
i bs ;, o, *= ', x n', ts Off
”, ) There is also a preliminary copy corresponding to each of them, and the digital value
occurs. ,.

3 is the vehicle speed. 1. 1u which generates a pulse signal in response to the running speed of the vehicle, and 4 which set the vehicle speed variable.
1 route, unit time -! cp11'1Flt! The number of pulse signals is generated by combining the number of pulse signals with the digital signal y. , ・5! Yo I
MRe? + II assistant ■ 1 lux, electric Qinbu calculation circuit,
Microphone I: Digital convenience store 34 such as I computer
．． - Consists of evening. This arithmetic unit Il& is the digital 4a mentioned above.
C1 receiving X Sy IM rudder Il determined by the vehicle speed and rain condition at that time:'l? +l! Calculate auxiliary torque 2.

In addition, the auxiliary torque is output as a pulse width modulated (PWM) frequency signal to the drive circuit III'''Ir crystal 6, and this drive circuit generates the C?11i::'Auxiliary rudder torque. The opening degree of the hydraulic valve installed in the auxiliary power mechanism between the control and the control is adjusted by the linear solenoid F' (air control - mechanical converter) 7.The pulse width rR control here is the on/off ratio of the frequency signal. It is used to control the effective value of the current flowing through the linear solenoid.
5 is configured to generate 2111 assist force (assist force) as shown in FIG. 2 in response to the digital value y. Here, the auxiliary torque decreases as the vehicle speed increases, but the wiper is high: 3! ! It works °
The state of C is decreasing. Therefore, the vehicle speed is
: By suddenly turning off the steering controller when the
, I decided to suddenly cut 1.81 mulberry 11 pots, I
Not only is she getting masturbated, but she's also in a rainy state, with 9 pebbles? Grigunbu,'! Guj! Down, (■, [Thick 3 shi horizontal slide: To become palm b ・□.

nii, 1' i゛ζ too, 'steering? iU ribs? But, it's a little crowded! 9. Sudden changes 1; 11 of the rudder axis are prevented.
, .

19 (As stated above in carrying out the present invention, 1)
111 Auxiliary power machine 41) Toshi C is particularly limited to prisons, motors,
(Also, it would be possible to use a step motor or the like as an electro-mechanical conversion device.)

In addition, even though the rain condition is not detected, it is possible to use K 15:h"z~°1°t @-J:, so■1 挈11'Z゛"'tsu in addition to Wybus and Itsu71. You can do that too...

As described above, according to the present invention, for the 917 ease of the road surface due to the descending FIiμs condition, the total steering of the dormitory is 1.
Is it possible to control Luk? 'The IQ, the effect, is fired, 1;l is turned off. ,
.

4. Brief explanation of the drawings.

FIG. 1 is a diagram showing the first application of the present invention (Tele 11 is not shown), and the second diagram is a diagram showing the 1st phase of the apparatus shown in FIG. 1.

1... so (pass switch -; speed se, nsa, 5...
, :JR37, concave 118.7...linear solenoid, doppi armature machine * conversion device).

Representative patent attorney, Takashi Okabe

Claims (1)

[Claims] Steering 1 Eisaku i! :(IN, which is steered by 1!V% in accordance with the 1M operation of !). 1
11. In the control device, when the vehicle is running 11' 3
jl! a first means responsive to the rainfall condition; a second means responsive to the rainfall condition;
(Third means for controlling the range replacement device, etc.) A vehicle IM rudder control device named ζ.