Pump system, fluid supply device and method for controlling drive of pump system
AssigneeMINEBEA MITSUMI Inc.
InventorsYuta YOSHII, Chikara SEKIGUCHI, Shigenori INAMOTO, Yuki TAKAHASHI, Daisuke KODAMA, Daisuke KURITA
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Abstract
A pump system contains a vibration actuator which can be electromagnetically driven by applying an alternating-current voltage E thereto, a sealed chamber connected to a suction port and a discharge port, and a movable wall for changing a volume of the sealed chamber. The movable wall is displaced due to drive of the vibration actuator to supply fluid in the sealed chamber into a target object. The pump system controls an effective value of the alternating-current voltage E so that an amplitude Y of the vibration actuator is constant.
Claims7
A pump system, comprising:
- a vibration actuator which can be electromagnetically driven by applying an alternating-current voltage thereto;
- a sealed chamber connected to a suction port and a discharge port;
- and
- a movable wall for changing a volume of the sealed chamber,
- wherein the movable wall is displaced due to drive of the vibration actuator to supply fluid in the sealed chamber into a target object, and
- wherein an effective value of the alternating-current voltage is controlled so that an amplitude of the vibration actuator is constant.
A method for controlling drive of a pump system containing a vibration actuator which can be electromagnetically driven by applying an alternating-current voltage thereto, a sealed chamber connected to a suction port and a discharge port, and a movable wall for changing a volume of the sealed chamber, wherein the movable wall is displaced due to drive of the vibration actuator to supply fluid in the sealed chamber into a target object, the method comprising:
- controlling an effective value of the alternating-current voltage so that an amplitude of the vibration actuator is constant.
Dependencies are inferred from the claim text.