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Apparatus and method for controlling a pump system

  • US 6,709,241 B2
  • Filed: 10/15/2002
  • Issued: 03/23/2004
  • Est. Priority Date: 03/24/1999
  • Status: Expired due to Term
First Claim
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1. A method of controlling the operating parameters associated with fluid flow, speed or pressure of a centrifugal pump of a fluid pumping system comprising the steps of:

  • storing predetermined data values associated with at least one operating condition of the centrifugal pump;

    measuring at least one operating parameter associated with the centrifugal pump;

    associating subsets of said predetermined stored data values with the measured operating parameters to obtain calculated data values corresponding to the measured operating parameter; and

    comparing said calculated data values with a corresponding threshold value; and

    generating a control signal in response thereto for correcting the speed thereof in order to maintain a requisite pump flow or pressure, the control signal including a stability factor that prevents overcorrection of the pump speed.

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