To provide a control device of an electric fluid pump capable of determining the rotational direction of the pump.
This control device of a pump part 46 rotatingly driven by a motor 47, is incorporated with the motor 47 for controlling a rotating speed by a rotating speed control means for outputting a pulse width modulation signal, and has an actual rotating speed calculating means for calculating an actual rotating speed of the pump part 46 on the basis of the pulse width modulation signal, a supply voltage detecting means for detecting supply voltage to the motor 47, and a rotational direction determining means for determining the rotational direction of the pump part 46 on the basis of the actual rotating speed of the pump part 46 calculated by the actual rotating speed calculating means and the supply voltage detected by the supply voltage detecting means.
OSADA KIYOSHI
OTAKE AKIYA
| JPH02161196A | 1990-06-21 | |||
| JPH02161196A | 1990-06-21 |
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