If all phases are zero, the sine waves align at $t=0$ to create a massive voltage/amplitude spike. To protect the DUT and amplifier, engineers use Schröder phases or iterative algorithms to flatten the time-domain signal (reduce the Crest Factor to ~1.6–2).
"Multisinusprüfung" is a German term that translates to or "Polysinusoidal Test." multisinusprüfung
: To prevent the shaker from reaching displacement limits (peak G-levels), the system would automatically adjust the phase relationships between the multiple sine tones in real-time. This keeps the total combined peak amplitude as low as possible while still delivering the required energy to each individual frequency. If all phases are zero, the sine waves
Feature Concept: Resonance-Aware Adaptive Sweep Partitioning This keeps the total combined peak amplitude as
In a German automotive lab (e.g., testing an engine mount):
Here is the deep dive into what it entails.
: For durability testing, the feature could automatically adjust the amplitude of specific tones if it detects that a certain resonance is "drifting" (a sign of material fatigue or structural softening). It ensures the test stays "fatigue-equivalent" even as the test object's properties change. Why this is a "killer" feature: