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how to obtain this waveform

Asked by Danilo NASCIMENTO on 13 Dec 2014
Latest activity Answered by Image Analyst
on 13 Dec 2014
Hey guys do you know anyway of obtaining this waveform using matlab or simulink? It is the boldfaced one.

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1 Answer

Answer by Image Analyst
on 13 Dec 2014
 Accepted Answer

How about this:
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
format long g;
format compact;
t1 = 0.0005;
t2 = .008;
t3 = .0087;
t4 = 0.0161;
t = linspace(0, .018, 300);
period1 = (t2-t1) * 2;
period2 = (t4-t3) * 2;
ipv1 = sin(2 * pi * (t - t1) / period1);
subplot(3, 1, 1);
plot(t, ipv1, 'b-', 'LineWidth', 2);
grid on;
ipv2 = sin(2 * pi * (t - t4) / period2);
subplot(3, 1, 2);
plot(t, ipv2, 'b-', 'LineWidth', 2);
grid on;
% Make output array
ipv = zeros(1, length(t));
% Assign hump from curve 1 to it.
indexRange1 = ipv1 >= 0 & t >= t1 & t <= t2;
ipv(indexRange1) = ipv1(indexRange1);
% Assign hump from curve 2 to it.
indexRange2 = ipv2 <= 0 & t >= t3 & t <= t4;
ipv(indexRange2) = ipv2(indexRange2);
subplot(3, 1, 3);
plot(t, ipv, 'b-', 'LineWidth', 2);
grid on;
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);
% Give a name to the title bar.
set(gcf, 'Name', 'Demo by ImageAnalyst', 'NumberTitle', 'Off')

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