JPH01161180U - - Google Patents
Info
- Publication number
- JPH01161180U JPH01161180U JP5818188U JP5818188U JPH01161180U JP H01161180 U JPH01161180 U JP H01161180U JP 5818188 U JP5818188 U JP 5818188U JP 5818188 U JP5818188 U JP 5818188U JP H01161180 U JPH01161180 U JP H01161180U
- Authority
- JP
- Japan
- Prior art keywords
- steering angle
- rear wheel
- actuator
- wheel steering
- force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000013016 damping Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Description
第１図は本考案第１実施例の車両用後輪舵角制
御装置を示す全体図、第２図、第３図、第４図は
粘性ダンパによる減衰係数を異ならせた場合の前
輪操舵角、後輪実舵角、ヨーレートの各特性の実
験結果を示す特性比較図、第５図は本考案第２実
施例の車両用後輪舵角制御装置を示す全体図、第
６図は第２実施例装置の反力機構と粘性機構の斜
視図、第７図は本考案第３実施例の車両用後輪舵
角制御装置を示す全体図、第８図は第３実施例装
置のコントローラの詳細図、第９図は減衰力可変
シヨツクアブソーバのステツプモータの駆動制御
作動を示すフローチヤート図、第１０図は減衰力
可変シヨツクアブソーバの減衰力特性図、第１１
図は第３実施例装置での減衰力可変制御を示すタ
イムチヤート図、第１２図は従来の車両用後輪舵
角制御装置における前輪操舵角、後輪実舵角、ヨ
ーレートの各特性図である。
１…後輪、２…舵角可変機構、３…モータアク
チユエータ（アクチユエータ）、４…後輪舵角計
算部、５…車体、６…センタリングバネ（反力機
構）、７…粘性ダンパ（粘性機構）、８，９…渦
巻バネ（反力機構）、１０…回転ダンパ、１１…
第１円筒ケース（ケース）、１２…第２円筒ケー
ス（ケース）、１５…減衰力可変シヨツクアブソ
ーバ（可変粘性機構）、１６…ステツプモータ、
４３…コントローラ。
Fig. 1 is an overall view showing the rear wheel steering angle control device for a vehicle according to the first embodiment of the present invention, and Figs. 2, 3, and 4 show front wheel steering angles when the damping coefficients of the viscous dampers are varied. , a characteristic comparison diagram showing the experimental results of the characteristics of rear wheel actual steering angle, and yaw rate, FIG. 5 is an overall diagram showing the rear wheel steering angle control device for a vehicle according to the second embodiment of the present invention, and FIG. A perspective view of the reaction force mechanism and the viscosity mechanism of the device according to the embodiment, FIG. 7 is an overall view showing the rear wheel steering angle control device for a vehicle according to the third embodiment of the present invention, and FIG. 8 is a diagram of the controller of the device according to the third embodiment. 9 is a flowchart showing the drive control operation of the step motor of the variable damping force shock absorber. FIG. 10 is a damping force characteristic diagram of the variable damping force shock absorber.
The figure is a time chart showing variable damping force control in the third embodiment, and Figure 12 is a characteristic diagram of front wheel steering angle, rear wheel actual steering angle, and yaw rate in a conventional vehicle rear wheel steering angle control device. be. DESCRIPTION OF SYMBOLS 1... Rear wheel, 2... Steering angle variable mechanism, 3... Motor actuator (actuator), 4... Rear wheel steering angle calculation part, 5... Vehicle body, 6... Centering spring (reaction force mechanism), 7... Viscous damper ( viscous mechanism), 8, 9... spiral spring (reaction force mechanism), 10... rotary damper, 11...
First cylindrical case (case), 12... Second cylindrical case (case), 15... Variable damping force shock absorber (variable viscosity mechanism), 16... Step motor,
43...Controller.
Claims (1)
可変機構を電気的に発生させたトルクもしくは力
で駆動するアクチユエータと、該アクチユエータ
に対し所定の駆動指令を出力する後輪舵角計算部
とを備えた車両用後輪舵角制御装置において、 前記アクチユエータで発生するトルクもしくは
力の伝達系には、アクチユエータトルクもしくは
力に対抗して舵角を中立位置に保持すると共に舵
角に比例したトルクもしくは力を発生する反力機
構と、舵角速度に比例して動作方向に対抗する減
衰力を発生する粘性機構とを並列に設けた事を特
徴とする車両用後輪舵角制御装置。 (2) 前記反力機構と粘性機構とが、舵角可変機
構タイロツドと車体との間に並列に設けられてい
る請求項１記載の車両用後輪舵角制御装置。 (3) 前記反力機構と粘性機構とが、アクチユエ
ータ出力軸と車体に固定されたケースとの間に、
ケースに内蔵状態で、且つ、アクチユエータに隣
接して設けられている請求項１記載の車両用後輪
舵角制御装置。 (4) 前記粘性機構が、減衰力が制御可能な可変
粘性機構であり、後輪舵角が所定値を越えた時に
は一時的に可変粘性機構の減衰率を小さくする請
求項１または請求項２または請求項３記載の車両
用後輪舵角制御装置。[Claims for Utility Model Registration] (1) A variable steering angle mechanism for steering the rear wheels, an actuator for driving the variable steering angle mechanism with electrically generated torque or force, and a predetermined mechanism for controlling the actuator. In a rear wheel steering angle control device for a vehicle, which includes a rear wheel steering angle calculation unit that outputs a drive command, the torque or force transmission system generated by the actuator includes a steering unit that counteracts the actuator torque or force. A reaction force mechanism that maintains the angle at a neutral position and generates a torque or force proportional to the steering angle, and a viscous mechanism that generates a damping force that opposes the operating direction in proportion to the steering angle speed are installed in parallel. Features: Rear wheel steering angle control device for vehicles. (2) The rear wheel steering angle control device for a vehicle according to claim 1, wherein the reaction force mechanism and the viscosity mechanism are provided in parallel between the variable steering angle mechanism tie rod and the vehicle body. (3) The reaction force mechanism and the viscosity mechanism are arranged between the actuator output shaft and a case fixed to the vehicle body,
2. The rear wheel steering angle control device for a vehicle according to claim 1, wherein the device is built into the case and is provided adjacent to the actuator. (4) The viscous mechanism is a variable viscosity mechanism whose damping force can be controlled, and when the rear wheel steering angle exceeds a predetermined value, the damping rate of the variable viscosity mechanism is temporarily reduced. Or the rear wheel steering angle control device for a vehicle according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988058181U JPH078358Y2 (en) | 1988-04-28 | 1988-04-28 | Rear wheel steering angle control device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988058181U JPH078358Y2 (en) | 1988-04-28 | 1988-04-28 | Rear wheel steering angle control device for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01161180U true JPH01161180U (en) | 1989-11-09 |
| JPH078358Y2 JPH078358Y2 (en) | 1995-03-01 |
Family
ID=31284006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988058181U Expired - Lifetime JPH078358Y2 (en) | 1988-04-28 | 1988-04-28 | Rear wheel steering angle control device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH078358Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6185277A (en) * | 1984-10-03 | 1986-04-30 | Toyota Central Res & Dev Lab Inc | Rear wheel steering angle controller for vehicle |
-
1988
- 1988-04-28 JP JP1988058181U patent/JPH078358Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6185277A (en) * | 1984-10-03 | 1986-04-30 | Toyota Central Res & Dev Lab Inc | Rear wheel steering angle controller for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH078358Y2 (en) | 1995-03-01 |
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