Pumps – Condition responsive control of pump drive motor – With plural separate drive motor controlling elements
Patent
1983-02-22
1985-08-13
Freeh, William L.
Pumps
Condition responsive control of pump drive motor
With plural separate drive motor controlling elements
417 22, 417 42, 417415, 74 892, 74 8922, 74590, 318282, 318467, F04B 4900
Patent
active
045347069
ABSTRACT:
A microprocessor based control system for establishing the optimum points of motor turn on and turn off for an oscillatory pumping system. The power to the motor is disabled at a point calculated to return the maximum stored mechanical energy to the system after turn-around. The motor is restarted at either a predetermined motor speed which may be different in the up and down stroke directions, or when the speed peaks. Safeguards are also provided under control of the microprocessor for disabling pump operation in the event of pump overtravel, overload or pump off. The control permits dynamic changes to the operating parameters of the pumping system in order to optimize the power required by the motor over a wide range of operating conditions.
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Fisher Robert E.
James Robert G.
Palm Richard R.
Armco Inc.
Freeh William L.
Neils Paul F.
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