Crystal Instruments Corporation

Yu-Jen Hsiao

Andrew P Snyder

A vibration generation system and method independently controls both frequency spectrum and amplitude distribution. Sensed vibration is used in feedback as a control to generate a controlled drive signal applied to a mechanical actuator. The amplitude distribution has a specified statistical characteristic adjusted to match a target characteristic, such as kurtosis, by adjusting a relative proportion of a coherent component in a randomized phase, which is then combined on a frequency-by-frequency basis with the separately adjusted frequency spectrum while in the frequency domain.

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San Jose, CA, United States of America

Yu-Jen Hsiao