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ROBUST FLOW PARAMETER MODEL FOR COMPONENT-LEVEL DYNAMIC TURBINE SYSTEM CONTROL

  • US 20110052370A1
  • Filed: 09/02/2009
  • Published: 03/03/2011
  • Est. Priority Date: 09/02/2009
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an apparatus defining a flow path through an aperture, the aperture defining a pressure drop along the flow path;

    an actuator for regulating fluid flow across the pressure drop by positioning a control element in the apparatus; and

    a processor for controlling the actuator, the processor comprising;

    a flow module for mapping a flow curve relating a flow parameter to a pressure ratio, and for defining a solution point located on the flow curve and a focus point located off the flow curve;

    a comparator for generating an error as a function of a slope defined between the focus point and the solution point;

    an estimator for estimating the slope by moving the solution point along the flow curve, such that the error is minimized; and

    a control law for directing the actuator to position the control element based on a feedback that is a function of the slope, such that the flow parameter describes the fluid flow and the pressure ratio describes the pressure drop.

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