Fluid-pressure and analogous brake systems – Pipeless valves
Patent
1991-06-12
1993-03-02
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Pipeless valves
303 94, 303109, 36442602, B60T 888
Patent
active
051903601
ABSTRACT:
A control method for an antiskid braking system according to the present invention comprises a step of calculating a reference body speed used for reference in effecting braking pressure control for wheels of an automobile. In this calculation step, a criterion wheel speed is set as a reference body speed before the start of the braking pressure control. In the calculation step after the start of the braking pressure control, the criterion wheel speed develops a tendency to skid for the first time, and the reference body speed separates from the criterion wheel speed and starts to be lowered with a fixed first gradient at a separating point of time when a calculated deceleration obtained from the criterion wheel speed exceeds a fixed deceleration value. When the output of a deceleration sensor ceases to be subject to response delay after the passage of a predetermined transition time starting at the separating point, thereafter, the reference body speed starts to be lowered with a second gradient based on the output of the deceleration sensor.
REFERENCES:
patent: 3912340 (1975-10-01), Bertolasi
patent: 4027926 (1977-06-01), Arai et al.
patent: 4836616 (1989-06-01), Roper et al.
patent: 4836619 (1989-06-01), Muto
patent: 4886322 (1989-12-01), Atkins
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
Oberleitner Robert J.
Young Lee W.
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