Controller

Details Controller Controller

2007-03-06

2007-03-06

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S112000, C700S038000

Reexamination Certificate

active

11389131

ABSTRACT:
A controller which is capable of improving the resolution and accuracy of control even when controlling a plant including a control region in which nonlinearities are temporarily very strongly exhibited and a control region in which the nonlinearities are hardly exhibited. A controller1which controls fuel pressure Pf of a fuel supply system10includes an ECU2. The ECU2sets a target fuel pressure Pf_cmd, calculates a first control input Rsld for causing the fuel pressure Pf to converge to the target fuel pressure Pf_cmd, with equations (1) to (6), modulates the first control input Rsld with equations (11) to (31) to thereby calculate a second control input Udsm, and depending on whether or not during fuel-cut operation or pressure decreasing control, selects one of the first and second control inputs Rsld and Udsm as the control input Upf.

REFERENCES:
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patent: 6904355 (2005-06-01), Yasui et al.
patent: 2004/0176903 (2004-09-01), Yasui
patent: 2005/015325 (2005-02-01), None

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