Control apparatus for variable valve actuation system
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United States of America Patent
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Feb 21, 2006
Grant Date -
May 12, 2005
app pub date -
Oct 27, 2004
filing date -
Nov 11, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An ECU calculates a target working angle r, and determines a difference between the target working angle r and the previous value r′ of target working angle as a change rate v to be feedforward controlled. Further, the ECU determines a deviation to be corrected by feedback control from the target working angle r and an actual value that is input from a sensor as a hypothetical rate u. The change rate v and the hypothetical rate u are added together, and a control amount to be output, for example, a voltage E is determined by referring to a three-dimensional map M3 from the added set change rate (v+u) and the input target working angle r.
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