Finding the frequency and the phase shift of a Sin signal
조회 수: 14 (최근 30일)
이전 댓글 표시
Hallo,
i have this sin function with damping discribed with the equation in the photo, the plot under it is my signal.
how can i claculate F0 and phi0 of my Signal?
댓글 수: 0
채택된 답변
Star Strider
2021년 5월 16일
One option is described in Curve fitting to a sinusoidal function and a version that could be more appropriate to your problem is How to filter noise from time-frequency data and find natural frequency of a cantilever?
The one change I would make to that code is to replace the ‘zci’ funciton with:
zci = @(x) find(diff(sign(x)));
since it is more robust.
Those routines will calculate the frequency, phase, and other parameters.
댓글 수: 4
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Spectral Measurements에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!