Pump control device and pump control system

A pump control device for controlling a pump,

• wherein the pump includes:
• a vibration actuator for vibrating a vibrating body due to electromagnetic drive caused by electrical current supply to a coil,
• a sealed chamber which includes a movable wall which can be displaced by vibration of the vibrating body so that a volume in the sealed chamber can be changed by displacement of the movable wall and fluid can be suctioned into an inside of the sealed chamber or discharged from the inside of the sealed chamber when the volume in the sealed chamber is changed, and
• a discharge portion for communicating the fluid between the sealed chamber and a tank for storing the fluid discharged from the sealed chamber therein to increase pressure of the fluid, and
• wherein the pump control device comprises:
• an obtaining part for obtaining pressure value information indicating a value of the pressure of the fluid in the tank, and
• a control unit for controlling a drive frequency of an electrical current to be supplied to the coil based on the obtained pressure value information.