Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2005-03-15
2005-03-15
Wolfe, Willis R. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S103000, C701S109000, C701S114000, C701S115000, C700S028000, C700S029000, C700S040000, C700S044000, C060S276000, C060S277000, C060S285000, C123S672000, C123S679000
Reexamination Certificate
active
06868326
ABSTRACT:
There are provided a control apparatus capable of controlling a controlled object with reduce dead time in sign inversion between the input to and the output from one of ΔΣ and ΣΔ modulation algorithms, thereby attaining improved convergence of the output from the controlled object to a target value and improved controllability. An ECU of the control apparatus calculates a limiting value DSMVO2L of a reference input DSMVO2, as DSMVO2L=−1 when DSMVO2<−1, DSMVO2L=1 when 1<DSMVO2, and DSMVO2L=DSMVO2in the other cases. By inputting the limiting value DSMVO2L to a Δ Σ modulation algorithm, a DSM output is calculated, according to which the air-fuel ratio of a mixture supplied to an internal combustion engine is controlled such that output from an oxygen concentration sensor converges to a target value.
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Hoang Johnny H.
Honda Giken Kogyo Kabushiki Kaisha
Squire Sanders & Dempsey L.L.P.
Wolfe Willis R.
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