Sliding integral proportional (SIP) controller for aircraft...

Details Sliding integral proportional (SIP) controller for aircraft... Sliding integral proportional (SIP) controller for aircraft...

2006-03-14

2006-03-14

Louis-Jacques, Jacques H. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

C701S070000, C701S080000, C303S148000, C303S149000, C303S150000, C244S075100, C244S111000, C188S18100R

Reexamination Certificate

active

07013208

ABSTRACT:
The sliding, integral, and proportional controller for providing aircraft antiskid braking control includes a reference velocity subsystem, a velocity error ratio subsystem, and a main controller subsystem generating a control command output signal indicative of a command braking pressure. The main controller subsystem includes a one dimensional sliding mode controller subsystem to determine an estimated net wheel torque signal, an adaptive threshold subsystem for generating an adaptive threshold based upon the modified slip ratio signal and a clock signal, integral gain subsystems, a proportional controller subsystem, and a pressure limiter. A method for determining braking efficiency of an aircraft braking system independent of the specific conditions is also provided.

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