JPS61127007U

JPS61127007U -

Info

Publication number: JPS61127007U
Application number: JP1107785U
Authority: JP
Priority date: 1985-01-29
Filing date: 1985-01-29
Publication date: 1986-08-09

Description

[Brief explanation of the drawing]

第１図はこの考案のシヨツクアブソーバ制御装
置の基本構成を示すブロツク図、第２図は上記装
置の実施例の全体構成を示す斜視図、第３図は減
衰力可変シヨツクアブソーバの一例を示す縦断面
図、第４図は減衰力可変シヨツクアブソーバのピ
ストン速度と減衰力との関係を示す図、第５図は
コントローラの構成を示すブロツク図、第６図は
バネ上−バネ下間の相対変位ｘＲとＦ／Ｖ変換器
からの出力電圧との関係を示す図、第７図ａ及び
ｂはこの考案の作用の一例としてのボトミングの
場合を示すタイムチヤート、第８図はマイクロコ
ンピユータにおいて実行される各車輪のバネ上変
位の初期値を設定する手順を示すフローチヤート
、第９図はマイクロコンピユータにおいて実行さ
れる減衰力可変シヨツクアブソーバの減衰力の切
換え制御の処理手順を示すフローチヤート、第１
０図ａ及びｂは第７図ａ及びｂに示すボトミング
の場合の、この考案の装置におけるバネ上変位、
相対速度及び減衰力の変化を示す図、第１１図ａ
及びｂは従来装置においてボトミングを行つた場
合のバネ上変位、相対変位、相対速度及び減衰力
の変化を示す図である。１，１ａ〜１ｄ……減衰力可変シヨツクアブソ
ーバ、２，２ａ〜２ｄ……バネ上変位計測手段、
３，３ａ〜３ｄ……相対速度計測手段、４……符
号判定手段、５……制御信号出力手段、１２，１
２ａ〜１２ｄ……加速度センサ、１３，１３ａ〜
１３ｄ……ストロークセンサ、１４……コントロ
ーラ、１５……外筒、１６……ロツド、１９……
チユーブ、２０……ピストン、２７……バソパス
路、２９……プランジヤ、３０……リターンスプ
リング、３１，３１ａ〜３１ｄ……ソレノイド、
３３，３３ａ〜３３ｄ……コイル、３７，３７ａ
〜３７ｄ，３８，３８ａ〜３８ｄ……積分器、４
１，４１ａ〜４１ｄ……Ｌ／Ｃ発振器、４２，４
２ａ〜４２ｄ……Ｆ／Ｖ変換器、４５……マイク
ロコンピユータ、４６……インタフエース回路、
４７……演算処理装置、４８……記憶装置、４９
，４９ａ〜４９ｄ……駆動トランジスタ、Ａ……
ピストン上室、Ｂ……ピストン下室。 Fig. 1 is a block diagram showing the basic structure of the shock absorber control device of this invention, Fig. 2 is a perspective view showing the overall structure of an embodiment of the above device, and Fig. 3 is a longitudinal section showing an example of a variable damping force shock absorber. 4 is a diagram showing the relationship between the piston speed and damping force of the variable damping force shock absorber, FIG. 5 is a block diagram showing the configuration of the controller, and FIG. 6 is a diagram showing the relative displacement between the sprung mass and the unsprung mass. A diagram showing the relationship between xR and the output voltage from the F/V converter, Figures 7a and b are time charts showing the case of bottoming as an example of the effect of this invention, and Figure 8 is a diagram showing the relationship between xR and the output voltage from the F/V converter. FIG. 9 is a flowchart showing the procedure for setting the initial value of the sprung mass displacement of each wheel; FIG.
Figure 0 a and b show the sprung mass displacement in the device of this invention in the case of bottoming shown in Figure 7 a and b;
Diagram showing changes in relative speed and damping force, Figure 11a
and b are diagrams showing changes in sprung mass displacement, relative displacement, relative velocity, and damping force when bottoming is performed using a conventional device. 1, 1a to 1d... variable damping force shock absorber, 2, 2a to 2d... sprung mass displacement measuring means,
3, 3a to 3d...Relative speed measuring means, 4...Sign determining means, 5...Control signal outputting means, 12,1
2a-12d... Acceleration sensor, 13, 13a-
13d... Stroke sensor, 14... Controller, 15... Outer cylinder, 16... Rod, 19...
Tube, 20... Piston, 27... Vasopath, 29... Plunger, 30... Return spring, 31, 31a to 31d... Solenoid,
33, 33a to 33d...Coil, 37, 37a
~37d, 38, 38a ~ 38d...Integrator, 4
1,41a-41d...L/C oscillator, 42,4
2a to 42d...F/V converter, 45...Microcomputer, 46...Interface circuit,
47... Arithmetic processing unit, 48... Storage device, 49
, 49a-49d...drive transistor, A...
Piston upper chamber, B...Piston lower chamber.

補正昭６０．５．２９図面の簡単な説明を次のように補正する。明細書第２５頁第８〜９行目の「第１０図ａ及
びｂは」とあるのを「第１０図は」と補正する。明細書第２５頁第１１〜１２行目の「第１１図
ａ及びｂは」とあるのを「第１１図は」と補正す
る。Amendment May 29, 1980 The brief description of the drawing is amended as follows. In the 8th to 9th lines of page 25 of the specification, the phrase ``Fig. 10 a and b'' has been corrected to ``Fig. 10''. In the 11th and 12th lines of page 25 of the specification, the phrase ``FIG. 11 a and b'' has been corrected to ``FIG. 11''.

Claims

[Scope of utility model registration request]

a variable damping force shock absorber capable of switching the damping force into at least two stages of low damping force and high damping force by inputting a control signal; a sprung mass displacement measuring means for measuring vertical displacement on the spring; Relative velocity measuring means for measuring relative velocity between unsprung masses, and sign determining means for determining the sign of the sprung mass displacement measured by the sprung mass displacement measuring means and the sign of the relative velocity measured by the relative velocity measuring means. Based on the determination result of the sign determination means, if the sign of the sprung mass displacement is positive and the sign of the relative velocity is positive, and if the sign of the sprung mass displacement is negative and the relative velocity outputs a control signal for reducing the damping force of the variable damping force shock absorber to a low damping force when the sign of is negative, and the sign of the sprung mass displacement is positive and the sign of the relative speed is negative. and when the sign of the sprung mass displacement is negative and the sign of the relative speed is positive, the control outputs a control signal that makes the damping force of the variable damping force shock absorber a high damping force. A shock absorber control device comprising a signal output means.