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Method and system for monitoring the operational state of a pump

  • US 9,587,636 B2
  • Filed: 03/27/2014
  • Issued: 03/07/2017
  • Est. Priority Date: 09/28/2011
  • Status: Active Grant
First Claim
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1. A method for monitoring the operational state of a pump comprising the steps:

  • acquiring a set characteristic diagram of the pump, the characteristic diagram of the pump being defined by a functional relationship between a first pump operating parameter characteristic of the operational state of the pump and a second pump operating parameter characteristic of the operational state of the pump,acquiring an actual characteristic diagram of the pump when the pump is installed in a higher-level system of an aircraft, and is running, andcomparing the actual characteristic diagram of the pump with the set characteristic diagram of the pump,the method including a further step of at least one of;

    one of periodically or continuously, for at least one predetermined value of the first pump operating parameter characteristic of the operational state of the pump, acquiring a difference between;

    a value of the second pump operating parameter characteristic of the operational state of the pump, which is assigned to the predetermined value of the first pump operating parameter characteristic of the operational state of the sums on the actual characteristic diagram of the pump anda value of the second pump operating parameter characteristic of the operational state of the pump, which is assigned to the predetermined value of the first pump operating parameter characteristic of the operational state of the pump on the set characteristic diagram of the pump,and also acquiring a progression over time of this difference, orone of periodically or continuously, for at least one predetermined value of the second pump operating parameter characteristic of the operational state of the pump, acquiring a difference between;

    a value of the first pump operating parameter characteristic of the operational state of the pump, which is assigned to the predetermined value of the second pump operating parameter characteristic of the operational state of the pump on the actual characteristic diagram of the pump, anda value of the first pump operating parameter characteristic of the operational state of the pump, which is assigned to the predetermined value of the second pump operating parameter characteristic of the operational state of the pump on the set characteristic diagram of the pumpand also acquiring a progression over time of this difference.

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