Sliding integral proportional (SIP) controller for aircraft skid control
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United States of America Patent
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-
Jan 27, 2004
Grant Date -
Jun 26, 2003
app pub date -
Dec 17, 2001
filing date -
Dec 17, 2001
priority date (Note) -
Expired
status (Latency Note)
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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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