09777733 is referenced by 2 patents and cites 993 patents.

A pumping system for at least one aquatic application comprises a motor coupled to a pump and a controller in communication with the motor. The controller may be adapted to determine a first motor speed, determine a present flow rate using curves of speed versus flow rate for discrete power consumptions, generate a difference value between the present flow rate and a reference flow rate, and/or drive the motor at a second motor speed based on the difference value until reaching a steady state condition.

Title
Flow control
Application Number
14/321639
Publication Number
9777733 (B2)
Application Date
July 1, 2014
Publication Date
October 3, 2017
Inventor
Florin Lungeanu
Egersund
DK
Gert Kjaer
Soenderborg
DK
Peter Westermann Rasmussen
Soenderborg
DK
Lars Hoffmann Berthelsen
Kolding
DK
Robert W Stiles Jr
Cary
NC, US
Agent
Quarles & Brady
Assignee
Danfoss Drives
DK
Pentair Water Pool and
NC, US
IPC
F04D 1/00
E04H 4/12
F04D 15/02
F04D 13/06
F04B 49/20
F04B 49/10
F04B 49/06
F04D 15/00
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