Method and apparatus for the reduction of sound emission, and high-frequency vibrations of a piezoelectric actuator

摘要

A signal generator (μc, s) generates a predetermined signal shape, which in turn a control unit (d / a, ae) is fed to. The control unit (d / a, ae) generates a drive current (i_St), in the course of the through the signal generator (μc, s) corresponds to the generated signal shape. By way of the actuator unit (d / a, ae), the piezoelectric actuator (p) by means of the drive current (i_St) loaded or unloaded. This drive current (i_St) is designed in such a way that in a frequency response of the driving current (i_St) 99% of the amplitude components below a predetermined limit frequency (f_g) lie.