|
11. A device for ascertaining at least one mechanical parameter of a mechanical object, and configured to: carry out a first excitation of the mechanical object using a multifrequency signal, the multifrequency signal being acoustic and a chirp signal or sweep signal, a length of the sweep signal or of the chirp signal is shorter than a mechanical settling time of the mechanical object; detect a first response signal of the mechanical object at at least one measuring point at the mechanical object; transform the first response signal from a time range into a frequency-dependent range; carry out a second excitation of the mechanical object based on selected frequencies; detect a second response signal of the mechanical object at the at least one measuring point of the mechanical object; and ascertain the mechanical parameter based on the second response signal; wherein the first excitation or the second excitation takes place via a plurality of speakers, each of which excites a portion of the mechanical object and a calibration of a sound level and of a phase takes place in succession for one or multiple speakers.
|
