Triangular wave form with skew and delay period

Hi all, I need Matlab code to generate triangular waveform with .85 skew and time delay period between two cycles. I know how to generate triangular pulse but i needed in wave form. I tried with pulstran but it is not coming properly.

Please help me. Thank you in advance

Answer 1

[Suraj Kumar]

Hi Karthik,

To generate a triangular waveform with a specified skew and delay period in MATLAB, we should initially define the necessary parameters such as sampling frequency, period, skew factor, delay period, and total duration. Then, we can create a time vector covering the desired duration.

Fs = 1000; 
T = 1; 
skew = 0.85; 
delay_period = 0.2; 
duration = 5;

t = 0:1/Fs:duration;

Then we can use the `sawtooth` function in MATLAB with the skew factor to generate the triangular waveform.

tri_wave = sawtooth(2 * pi * t / T, skew);

Finally, we can introduce a delay between cycles by zeroing out parts of the waveform corresponding to the delay period, ensuring that the waveform is only active during each cycle's defined period.

delay_samples = round(delay_period * Fs);
wave_with_delay = zeros(size(t));

for i = 1:length(t) 
    cycle_index = floor(t(i) / (T + delay_period)); 
    time_in_cycle = t(i) - cycle_index * (T + delay_period); 
    if time_in_cycle <= T
        wave_with_delay(i) = sawtooth(2 * pi * time_in_cycle / T, skew);
    end
end
 
figure;
plot(t, wave_with_delay);
xlabel('Time (s)');
ylabel('Amplitude');
title('Triangular Waveform with Skew and Delay');

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To learn more about 'sawtooth' function in MATLAB, please refer to the following documentation:

https://www.mathworks.com/help/signal/ref/sawtooth.html