| 摘要 |
The present invention relates to a method for controlling and/or regulating a metering pump having a drive motor having a shaft driven by the motor, and a displacement member disposed in a metering head, wherein the rotary motion of the shaft is converted into an oscillating motion of the displacement member, wherein the displacement member interacts with an outlet and inlet valve, leading to a pump stroke (pressure stroke) and an intake stroke and thus to delivering a metered medium. In order to disclose a method for controlling and/or regulating a metering pump operating principally without a position sensor on the pushrod, and that can highly precisely determine the metering behavior of the pump, according to the invention at least one motor operating parameter, preferably a motor voltage U or a motor current I, is measured, at least one control parameter is calculated from the measured motor operating parameters and optionally further known motor characteristics are calculated, the at least one control parameter is compared to a predetermined guide parameter, and a comparison signal depending on the result of the comparison is output and can be used as a status, actuating, and/or regulating signal. |
