Fluid-pressure and analogous brake systems – Speed-controlled – Torque sensing
Reexamination Certificate
2005-10-04
2005-10-04
Graham, Matthew C. (Department: 3683)
Fluid-pressure and analogous brake systems
Speed-controlled
Torque sensing
C303S155000, C303S126000
Reexamination Certificate
active
06951372
ABSTRACT:
The adaptive brake application and initial skid detection system allows rapid brake application and prevents deep initial skids. Brake pressure is compared with a predetermined threshold brake pressure. Wheel velocity error signals are also generated to indicated the difference between the wheel velocity and a reference velocity signal. A pressure bias modulator integrator responsive to brake pressure signals adjusts the wheel velocity error signals to provide an anti-skid control signal. The pressure bias modulator integrator can also be initialized to the value of the measured brake pressure when the wheel velocity error signals indicate the beginning of a skid. Brake pressure difference signals are generated to indicate the difference between brake pressure and a commanded brake pressure, and an adjusted brake pressure error signal is generated in response to the brake pressure difference signals.
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US RE30,763, 10/1981, Hirzel et al. (withdrawn)
Motohiro Igarashi et al. Digital Brake Control System for Mag-lev Trains, presented at STech '93 (International Conference on Speedup Technology for Railway and MAGLEV Vehicles), Nov. 1993, Yokohama, Japan.
Cook Robert D.
Salamat Bijan
Fulwider Patton Lee & Utecht LLP
Graham Matthew C.
Hydro-Aire, Inc.
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