Patent Document ID: 9316220
Application ID: 13997523
Patent Flag: 1

Claim One:
1. A method for actuating a pumping device with an optimal driving voltage, wherein the pumping device comprises at least a pumping chamber having a pumping membrane, an inlet chamber and an outlet chamber, a voltage controlled actuator connected to said pumping membrane, said pumping membrane reaching at least one stop position defined by a mechanical stop during a pumping stroke at least one sensor for determining whether the pumping membrane has reached said at least one stop position said method comprising a learning phase and a working phase, wherein the learning phase comprises at least the following steps actuation of the pumping membrane by applying a predetermined actuation voltage V act to the actuator, said voltage being either high enough for said pumping membrane to reach said at least one stop position in an over-actuation step or low enough for said pumping membrane not to reach said at least one stop position in an underactuation step; where if the over-actuation occurs, decreasing the applied actuation voltage until it is determined that the pumping membrane has left said at least one stop position and storing as the optimal voltage V act optimal the lowest applied voltage value before the pumping membrane has left said at least one stop position; or where if the under-actuation occurs, increasing the applied voltage until it is determined that the pumping membrane has reached said at least one stop position and storing as the optimal voltage V act optimal the lowest applied voltage value when the pumping membrane has reached said at least one stop position; actuating the pumping device in the working phase with the determined optimal voltage V act optimal .