Automatic Scanning Process

The measurement of the displacement in the z direction can be accomplished by using a laser triangulation sensor scanning 2 dimensions (radius r and angle φ) of the target surface.

The transducer under test is rotated by a turn table (φ coordinate) and shifted by a linear actuator (r coordinate). An additional actuator is required to adjust the laser to the optimal distance in the z dimension.

At each measurement point the transducer is excited by a shaped stimulus sweep giving sufficient spectral resolution and high SNR in the measured response over the whole audio band (< 25 kHz).

• Scan a broad range of transducer types

• Measure with high SNR

• Get response over the whole audio band

• Get exact geometry and mechanical vibrations in one scan

• Export geometry data to FEA/BEA software