Pump device and program for pump device
AssigneeMurata Manufacturing Co., Ltd.
InventorsMitsushiro TERASAWA, Genta NAKANO
Life of this patent
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Abstract
A pump device includes a first pump and a second pump. The pump device also includes a driver and a controller. The first pump and the second pump are connected in parallel with each other on an electric power supply path from the driver. The controller is capable of acquiring an impedance value of the first pump and an impedance value of the second pump, and identifying, as a specific pump, a pump having a minimum impedance value from among the first pump and the second pump. The controller is capable of controlling the driver such that a drive current to be supplied to the first pump and the second pump has a value less than or equal to a prescribed current value.
Claims11
A pump device comprising:
- a first pump that is an electric pump configured to pump a fluid;
- a second pump that is an electric pump configured to pump a fluid;
- a driver configured to convert an input voltage, and to supply electric power to the first pump and the second pump;
- and
- a controller configured to control the driver,
- wherein the first pump and the second pump are connected in parallel with each other on an electric power supply path from the driver, and
- wherein the controller is configured to:
- identify, as a specific pump, a pump having a minimum impedance value from among the first pump and the second pump;
- and
- control the driver such that a drive current supplied to the first pump and the second pump has a value less than or equal to a prescribed current value determined in advance for the specific pump.
A method for controlling a pump device, the pump device comprising:
- a first pump that is an electric pump configured to pump a fluid;
- a second pump that is an electric pump configured to pump a fluid;
- a driver configured to convert an input voltage, and to supply electric power to the first pump and the second pump;
- and
- a controller configured to control the driver,
- the first pump and the second pump being connected in parallel with each other on an electric power supply path from the driver,
- the method comprising:
- identifying, as a specific pump, a pump having a minimum impedance value from among the first pump and the second pump;
- and
- controlling the driver such that a drive current supplied to the first pump and the second pump has a value less than or equal to a prescribed current value determined in advance for the specific pump.
Dependencies are inferred from the claim text.