Control apparatus

Details Control apparatus Control apparatus

2007-02-20

2007-02-20

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

C123S090150, C700S038000

Reexamination Certificate

active

11349140

ABSTRACT:
A control apparatus is provided for ensuring a high-level control resolution and a high control accuracy even when a plant exhibits strong and varying non-linear characteristics with a varying sensitivity of a control amount to a control input. The control apparatus for controlling a cam phase through a cam phase varying mechanism comprises an ECU. The ECU calculates an SLD control input for controlling a cam phase to converge to a target cam phase in accordance with a predetermined control algorithm, and calculate a control input to the cam phase varying mechanism by modulating the SLD control input in accordance with a predetermined modulation algorithm. The ECU also sets an amplitude setting value in accordance with the cam phase, an engine rotational speed, an oil pressure, and an oil temperature.

REFERENCES:
patent: 6661363 (2003-12-01), Zierhofer
patent: 2003/0000489 (2003-01-01), Majima et al.
patent: 2005/0203642 (2005-09-01), Yasui
patent: 2005/0216179 (2005-09-01), Yasui
patent: 1 418 326 (2004-05-01), None

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