Method for the continuous control of a position of a control valve
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United States of America Patent
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Nov 23, 2004
Grant Date -
May 29, 2003
app pub date -
Nov 22, 2002
filing date -
Nov 23, 2001
priority date (Note) -
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Abstract
A method is for the continuous control of a position of a control valve. A control deviation from a position of the control valve, is determined as a controlled variable, in relation to a reference variable being determined. A manipulated variable is determined from the control deviation, by which manipulated variable the control valve is positioned and/or maintained in the position predefined by the reference variable. The improved method for the control of the position of a control valve, has the effect that failure of a valve position transmitter does not result in failure of the position control loop.
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