Error integrator for closed-loop fault detection in an...

Details Error integrator for closed-loop fault detection in an... Error integrator for closed-loop fault detection in an...

2005-09-20

2005-09-20

Dolinar, Andrew M. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C700S079000

Reexamination Certificate

active

06947832

ABSTRACT:
Fault monitor (20) for error input (ICPC—ERR) to closed-loop control (16) of an engine function, such as a control pressure for a fuel system (12). Error input is derived from the desired and actual data values for the function. An integration function integrates the absolute value of the input data value (22, 24, 26, 28) during a time interval defined by a timing function (38, 40, 42, 44) to provide an integrated data value. A comparison function (34) compares the integrated data value and a data value ICPC—OBD—ERR defining a fault indication.

REFERENCES:
patent: 4214308 (1980-07-01), Carp
patent: 4854283 (1989-08-01), Kiyono et al.
patent: 5094214 (1992-03-01), Kotzan
patent: 5191867 (1993-03-01), Glassey
patent: 5357912 (1994-10-01), Barnes et al.
patent: 5485820 (1996-01-01), Iwaszkiewicz

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