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US 11,326,544 B2Granted
Sensorless control device for DC fuel pump
AssigneeCoavis
InventorsYoung Sub Jang, Suk Min Yun
Life of this patent
Estimating the term…
Abstract
Provided is a sensorless control device for a DC fuel pump that may be downsized as compared to a conventional control device for a DC fuel pump and may implement the same operation at a relatively low cost, and the sensorless control device for a DC fuel pump.
Claims5
A sensorless control device for a DC fuel pump, the sensorless control device comprising:
- a measuring unit for measuring an input voltage of a power terminal of a DC motor included in the DC fuel pump;
- a first removing unit for outputting a first voltage from which a DC component included in the input voltage measured by the measuring unit is removed;
- a second removing unit for removing a switching component from the first voltage and amplifying a signal from which the switching component is removed to output a second voltage;
- a delay unit for outputting a delay signal obtained by delaying the second voltage by a predetermined degree;
- a square wave generation unit for generating a square wave by comparing the second voltage and the delay signal;
- and
- a calculation unit for calculating revolutions per minute (RPM) of the DC motor by counting a cycle of the square wave.
4 more elements
Dependencies are inferred from the claim text.