Title:
ROTATIONAL SPEED CONTROL METHOD FOR MOTOR-DRIVEN PUMP
Document Type and Number:
Japanese Patent JP2003176799
Kind Code:
A
Abstract:
To provide a rotational speed control method for a motor-driven pump for forming the pump with excellent pump performance and for preventing the pump from being overloaded, by taking out just enough motor power over a whole region in the vicinity of from a cutoff to delivery.
Input value of a system connected to a pump motor is detected. When a detection value is lower than a reference value, voltage is increased to increase a rotational speed of the pump motor. When the detection value is higher than the reference value, voltage is decreased to decrease the rotational speed of the pump motor.
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Inventors:
NAKADA MAKOTO
Application Number:
JP2002366024A
Publication Date:
June 27, 2003
Filing Date:
October 02, 1995
Export Citation:
Assignee:
TSURUMI MFG
International Classes:
F04D15/00; (IPC1-7): F04D15/00