JPS6078659U

JPS6078659U - Anti skid control device

Info

Publication number: JPS6078659U
Application number: JP16999383U
Authority: JP
Inventors: 松田　俊郎
Original assignee: 日産自動車株式会社
Priority date: 1983-11-04
Filing date: 1983-11-04
Publication date: 1985-06-01

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は緩増圧を行なう従来例を示したタイムチャート
図、第２図は緩増圧による２サイクル目での疑似車速発
生の問題を示した説明図、第３図は本考案の一実施例を
示したブロック図、第４図は第３図の実施例における疑
似車速発生回路の具体的な実施例を示したブロック図、
第５図は第４図の動作を示したタイムチャート図、第６
図は第３図の実施例による液圧制御動作を示したタイム
チャート図である。１・・・・・・車輪速センサ、２・・・・・・車輪速検
出回路、３・・・・・・加減速度検出回路、４・・・・
・・疑似車速発生回路、５・・・・・・目標車輪速発生
回路、６．　７．　８・・・・・・コンパレータ、９・
・・・・・オアゲート、ｉｏ、１３・・・・・・アンプ
、１１・・・・・・液圧アクチュエータ、１２・・・・
・・アンドゲート、１４，２２・・・・・・切換スイッ
チ、５．１６・・・・′・・減速度設定器、１８，１９
・・・・・・コンパレータ、２０・・・・・・フリップ
フロップ、２３，２４・・・・・・ラッチ回路、２５・
・・・・・演算回路、２６・・・・・・タイマ、２７・
・・・・・疑似車速発生回路。Figure 1 is a time chart showing a conventional example of gradual pressure increase, Figure 2 is an explanatory diagram showing the problem of false vehicle speed generation in the second cycle due to gradual pressure increase, and Figure 3 is an example of the present invention. FIG. 4 is a block diagram showing a specific example of the pseudo vehicle speed generation circuit in the embodiment of FIG. 3;
Figure 5 is a time chart diagram showing the operation of Figure 4;
The figure is a time chart diagram showing the hydraulic pressure control operation according to the embodiment of FIG. 3. 1...Wheel speed sensor, 2...Wheel speed detection circuit, 3...Acceleration/deceleration detection circuit, 4...
. . . Pseudo vehicle speed generation circuit, 5 . . . Target wheel speed generation circuit, 6. 7. 8...Comparator, 9.
...OR gate, io, 13...amplifier, 11...hydraulic actuator, 12...
...And gate, 14,22...Choice switch, 5.16...'...Deceleration setting device, 18,19
...Comparator, 20...Flip-flop, 23, 24...Latch circuit, 25.
... Arithmetic circuit, 26 ... Timer, 27.
...Pseudo vehicle speed generation circuit.

Claims

[Scope of utility model registration request]

Generates a pseudo vehicle speed every time the wheel acceleration/deceleration calculated based on the wheel speed detected by the wheel speed sensor reaches the set deceleration,
The pseudo vehicle speed is generated by detecting the wheel speed at that time every time the set deceleration is reached, calculating the slope between it and the previously detected wheel speed, and converting the pseudo vehicle speed corresponding to the slope to the current detected wheel speed. In an anti-skid control device that generates a vehicle speed starting from , a first set deceleration is used to generate a pseudo vehicle speed with a predetermined slope by a braking operation, and a second set deceleration is lower than the set deceleration. An anti-skid control device comprising a pseudo vehicle speed generating means for generating the pseudo vehicle speed having a slope calculated based on the wheel speed when the second set deceleration is obtained.