I am new with MatLab. I want to Estimate the period and the damping of the system from a set of data using three values of j cycles:
j = 10 cycles, 20 cycles, 30 cycles
For each case c.I, c.II, and c.III I am supposed to use different starting peak (i.e., moving window of peaks) and calculate the median value of damping ratio and natural period for each case C.I, C.II, and C.III. and also tabulate the results.
Does anyone have a suggestion about how to approad this problem?
I appreciate the help!
I used following code to extract and plot data and I am stuck on how to find period and damping:
clc; clear all; close all
acc = Vibration_Data(:,2);
dt = 0.02;
time = (0:numel(acc)-1) * dt;
last line: array indices must be positive integers or logical values.