The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2003
Filed:
Apr. 11, 2001
Oakley Henyan, Auburn, NY (US);
Other;
Abstract
A method and system for determining fluid flow rates through a motor driven pump controlled by a variable speed drive is disclosed. The variable speed motor drive is used to characterize a pump fluid flow for a plurality of motor torque values at a plurality of known pump speeds. These characterized pump flow rate/torque values/speed are stored and used to determine a pump fluid flow at a measured pump speed and motor torque by interpolating between the known characterized fluid flow/torque/speed values. In another aspect of the invention, the pump flow rate at a measured torque, at a specified characterizing speed value is determined by interpolating between known characterizing pump flow rates. The determined pump flow rates can then be used to determine pump flow rates at a measured speed by interpolating between corresponding speed values which bound the measured speed.