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Linear quadratic regulator control for bleed air system fan air valve

  • US 8,529,189 B2
  • Filed: 01/25/2010
  • Issued: 09/10/2013
  • Est. Priority Date: 01/30/2009
  • Status: Active Grant
First Claim
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1. A system for controlling gas turbine engine bleed air temperature, comprising:

  • a fan air valve adapted to receive a flow of fan air from a turbofan gas turbine engine intake fan, the fan air valve coupled to receive valve position commands and configured, in response to the valve position commands, to move to a valve position to thereby control the engine bleed air temperature; and

    a fan air valve controller configured to implement a linear quadratic regulator (LQR) control, the fan air valve controller adapted to receive a plurality of sensor signals, each sensor signal representative of one or more system parameters, the controller configured, in response to the sensor signals, to supply the valve position commands to the fan air valve.

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