JPH0182970U

JPH0182970U -

Info

Publication number: JPH0182970U
Application number: JP1987179144U
Authority: JP
Priority date: 1987-11-25
Filing date: 1987-11-25
Publication date: 1989-06-02

Description

[Brief explanation of the drawing]

第１図は本考案の全体構成図、第２図は本考案
の一実施例を示すアンチスキツド制御装置の概略
構成図、第３図は第２図中のコントローラ内に記
憶されているプログラムのフローチヤート、第４
図は本考案装置によるブレーキ液圧の経時的変化
図、第５図は本考案装置と従来装置との制動性を
比較するための減速度の経時的変化図、第６図は
従来装置によるブレーキ液圧の経時的変化図であ
る。６，７……ブレーキ配管、８，８ａ，８ｂ……
モジユレータ、１４……ブレーキペダル、１５…
…ブレーキスイツチ、１７……コントローラ、１
８，１８ａ，１８ｂ……駆動回路、３０，３０ａ
，３０ｂ，３０ｃ，３０ｄ……車輪速度センサ、
６２……算出手段、６３……比較手段、６８……
切換手段、６９……ブレーキ液圧解除時間短縮信
号発生手段、１００……アンチスキツド制御手段
、ＦＷ，ＲＷ……車輪、Ｔ……ホールド時間、ｔ
……一定時間、Ｙ……ブレーキ液圧解除時間、Ｚ
……従来の設定時間。 Fig. 1 is an overall configuration diagram of the present invention, Fig. 2 is a schematic configuration diagram of an anti-skid control device showing an embodiment of the invention, and Fig. 3 is a flowchart of the program stored in the controller in Fig. 2. Chaat, 4th
The figure is a diagram of changes in brake fluid pressure over time using the device of the present invention, Figure 5 is a diagram of changes in deceleration over time to compare the braking performance of the device of the present invention and a conventional device, and Figure 6 is a diagram of brake fluid pressure with the conventional device. FIG. 3 is a diagram of changes in hydraulic pressure over time. 6, 7... Brake piping, 8, 8a, 8b...
Modulator, 14... Brake pedal, 15...
...Brake switch, 17...Controller, 1
8, 18a, 18b...drive circuit, 30, 30a
, 30b, 30c, 30d...wheel speed sensor,
62...Calculation means, 63...Comparison means, 68...
Switching means, 69... Brake fluid pressure release time shortening signal generating means, 100... Anti-skid control means, FW, RW... Wheels, T... Hold time, t
... Fixed time, Y ... Brake fluid pressure release time, Z
...Conventional setting time.

Claims

[Scope of utility model registration request]

a wheel speed sensor that detects the speed of each wheel of the vehicle and sends a speed signal corresponding to the wheel speed; a brake switch that detects whether the brake is on or off;
It has a modulator that controls the brake fluid pressure of each brake pipe, and a drive circuit that sends a drive signal that operates each modulator, and locks the wheels during braking based on the output signal from each wheel speed sensor. If the wheel lock tendency is detected, a brake fluid pressure release signal is sent to release the brake fluid pressure for a set time Z, and then the brake fluid pressure is held for a set time T. The anti-skid control means includes an anti-skid control means for sending a brake fluid pressure filling signal to the drive circuit to increase the brake fluid pressure in steps at fixed time intervals t, and prevents the wheels from locking by controlling the brake fluid pressure by the anti-skid control means. In the apparatus, a calculation means for calculating a fluctuation frequency of the speed signal when the brake is off;
comparing means for comparing the output from the calculation means with a predetermined value and, if the output is equal to or greater than the predetermined value, determining that the road is rough and sending out a rough road signal; and the setting of the brake fluid pressure release time. a brake fluid pressure release time shortening signal generating means for generating a brake fluid pressure release time shortening signal to a time Y shorter than time Z; An anti-skid control device comprising a controller comprising switching means for sending a signal from the brake fluid pressure release time reduction signal generating means to the drive circuit in place of the fluid pressure release signal.