ARRANGEMENT HAVING OSCILLATING MOTOR AND METHOD FOR CONTROLLING AN OSCILLATING MOTOR

摘要

The invention relates to an arrangement having an oscillating motor (100), a control circuit (20) for controlling the motor (100), a sensor arrangement (5) for determining an electric characteristic of the motor (100) at a predetermined measuring time (t₁, t₂, t₃) or in a predetermined measuring position (xM₁, xM₂, xM₃) during an oscillation process, and a processor (21) for determining a movement variable of the motor (100) by means of at least the electric characteristic and a constant inductivity value (L_const) of the motor (100), wherein the control circuit (20) in the operating state controls the motor (100) as a function of the movement variable, and the measuring time (t₁, t₂, t₃) or the measuring position (xM₁, xM₂, xM₃) is predetermined such that the inductivity (L) of the motor (100) remains approximately constant at least in a given current interval (I₁, I₂), even with different currents (/) through the motor (100). By means of a favorable implementation, the non-linearity of the motor inductivity can be taken into consideration, which results in increased stability in the control of the oscillation amplitude.