Abstract: Provided is a pump system including: a pump configured to send out a fluid in response to application of a voltage, an ejection amount of the fluid increasing or decreasing in accordance with the voltage; a flow meter configured to measure a flow rate of the fluid sent out from the pump; and a control unit connected to the pump and the flow meter, and configured to control the voltage that is applied to the pump according to the flow rate measured by the flow meter.

Abstract: A pump system including: a pump configured to intermittently perform an ejecting operation that ejects a fluid; a flow meter configured to measure a flow rate of the fluid ejected from the pump; and a control unit connected to the pump and the flow meter, configured to decide on a length of a stopping section during which the ejecting operation is stopped such that an ejection amount of fluid excessively ejected from the pump is canceled, based on a measured flow rate, which is the flow rate measured by the flow meter, and a target flow rate of the pump set in advance, and configured to control the pump so as to stop the ejecting operation according to the length of the stopping section.

Abstract: A tube pump having small driving energy is provided. The tube pump includes: a flexible tube for conveying a fluid; a holder part holding the tube so that the tube is at least partially bent; a driving part; and at least one pressing part, rotationally driven around a first central axis by the driving part, and pressing the tube along the bent portion of the tube held by the holder part while rotating around the first central axis, thereby conveying the fluid in the tube. The pressing part has an inclined plane inclined from the side of the tube toward the side of the pressing part in a radially outward direction with reference to the first central axis.

Abstract: A tube pump having small driving energy is provided. The tube pump includes: a flexible tube for conveying a fluid; a holder part holding the tube so that the tube is at least partially bent; a driving part; and at least one pressing part, rotationally driven around a first central axis by the driving part, and pressing the tube along the bent portion of the tube held by the holder part while rotating around the first central axis, thereby conveying the fluid in the tube. The pressing part has an inclined plane inclined from the side of the tube toward the side of the pressing part in a radially outward direction with reference to the first central axis.