05240380 is referenced by 96 patents and cites 24 patents.

A control system (10) for a variable speed centrifugal pump (12) in which pump pressure as a function of flow rate for a constant speed of operation of the pump has a range of flow rates in which the pump pressure increases as a function of increasing flow rate which is unstable in accordance with the invention includes a sensor (14) for sensing an operational parameter of an output flow pumped by the pump; a variable speed drive (16) for driving the pump at a commanded rotational speed in response to a commanded speed signal; and a controller (22), responsive to the sensed operational parameter, for producing the commanded speed signal (N) as a function of pump speeds at which the pump pressure does not increase with increasing flow rate.

Title
Variable speed control for centrifugal pumps
Application Number
7/703761
Publication Number
5240380
Application Date
May 21, 1991
Publication Date
August 31, 1993
Inventor
William J Mabe
Thornton
CO, US
Agent
Antonelli Terry Stout & Kraus
Assignee
Sundstrand Corporation
IL, US
IPC
F04D 15/00
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