Digital control method
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United States of America Patent
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-
Aug 13, 1985
Grant Date -
N/A
app pub date -
Dec 18, 1981
filing date -
Dec 27, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital control method for controlling a relative rotational phase angle p.theta. or the like in a fuel injection pump of an automobile. Decision is made of whether two successive deviations Er between the detected values and a target value are larger than a minimum reference deviation Ero or not. If they are larger than the Ero, decision is made of whether the signs of both the deviations are positive and/or negative. If both signs are positive, a given duration dTs is added to a fundamental duration ts of the next command signal for control. If both signs are different, a predetermined duration dTs is subtracted from the fundamental duration ts of the next command signal.
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