Control system having data correlation for controlling a vehicular anti-lock braking system
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United States of America Patent
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-
Nov 4, 1997
Grant Date -
N/A
app pub date -
Jun 16, 1994
filing date -
Jan 19, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a control system, for instance forming part of a vehicle anti-lock brake system, a plurality of control processors provides similar or identical control signals of the system in response to a shared transducer input. An independent data correlation processor compares data generated in the control processors for correlation and, in the absence of proper correlation, provides an indication which may be used to disable anti-lock operation of the brake system. In preferred embodiments, a four wheel vehicle with an anti-lock brake system is monitored by dual microprocessors. Each wheel has a speed sensor which supplies an input to each microprocessor. The data correlation processor compares the outputs of the microprocessors for each wheel and sends and alarm or disables the anti-lock brake system if the difference in the microprocessors output is beyond a limit amount.
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