Pumps – Condition responsive control of pump drive motor – Responsive to change in rate of pump fluid flow
Patent
1987-08-24
1989-01-03
Neils, Paul F.
Pumps
Condition responsive control of pump drive motor
Responsive to change in rate of pump fluid flow
417 45, 604 6, 494 1, F04B 4906, A61M 3700, B04B 1300
Patent
active
047953144
ABSTRACT:
A pump control apparatus including a variable speed pump controllable in response to a pump drive signal, a signal generator generating a commanded flowrate signal indicating desired flowrate of the pump, a flowrate sensor providing a sensed flowrate signal indicating sensed flowrate of the pump, and an integrator connected to the sensor and generator to receive and integrate the commanded flowrate signal and the sensed flowrate signal and to provide the pump drive signal based on the difference in integrated values of the signals so as to achieve desired commanded volume over time.
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DC Motors Speed Controls Servo Systems (Electro-Craft Corporation, Hopkins, Minn.), pp. 3-1 to 3-11.
DiStefano, J. J. III et al., Schaum's Outline of Theory and Problems of Feedback and Control Systems (McGraw-Hill Book Company), 1967, pp. 162-170.
Boucher Terry D.
Prybella John R.
Cobe Laboratories, Inc.
Neils Paul F.
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