The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2015
Filed:
Mar. 05, 2012
Andrew P. Snyder, Santa Clara, CA (US);
Yu-jen Hsiao, San Jose, CA (US);
Andrew P. Snyder, Santa Clara, CA (US);
Yu-Jen Hsiao, San Jose, CA (US);
Crystal Instruments Corporation, Santa Clara, CA (US);
Abstract
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.