MATLAB: How to plot a trapezoidal pulse in Matlab

pulsetrapezoid

I want to plot a trapezoidal pulse that has user defined rise time and fall time i.e. slope of the edges of the trapezoid can be set by me.

Best Answer

function [] = trapezoidal_pulse (rise_time, fall_time, height, length)

pulse = zeros (2, 4);

pulse(1,2)=height;

pulse(2,2)=rise_time;

pulse(1,3)=height;

pulse(2,3)=pulse(2,2)+length;

pulse(2,4)=pulse(2,3)+fall_time;

plot(pulse(2,:),pulse(1,:))

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MATLAB: Trapezoidal pulse generation using gensig() function

The answer is No! .I am not aware of any function which can do that for you. Try to adapt my function for your needs or write your own.

%Does this work for you?
[t,p]=Trapezoidal_pulse(1,3,0.01,1,1,5,8);
figure,plot(t,p)

The function:

%%
function [t,pulse_train]=Trapezoidal_pulse(Amplitude,FlatTopTime,DwellTime,RiseTime,FallTime,DeadTime,Repetitions)
%[t,pulse_train]=Trapezoidal_pulse(Amplitude,FlatTopTime,DwellTime,RiseTime,FallTime,DeadTime,Repetitions)
% All times are of same units
% DwellTime-1/Sampling rate or raster time
% DeadTime- Dead Time after each pulse
%Repetitions -Number of Trapezoidal pulses
if(RiseTime<DwellTime)
    warn('RiseTime<DwellTime: No Ramp up samples')
    rampup_samples=[];
else
    rampup_samples= linspace(0,Amplitude,ceil(RiseTime/DwellTime));
end
if(FallTime<DwellTime)
    warn('FallTime<DwellTime: No Ramp down samples')
    rampdown_samples=[];
else
    rampdown_samples= linspace(Amplitude,0,ceil(FallTime/DwellTime));
end
pulse=[rampup_samples Amplitude*ones(1,ceil(FlatTopTime/DwellTime)) rampdown_samples zeros(1,ceil(DeadTime/DwellTime))];
%bipolar
% pulse_train=repmat(pulse,[Repetitions 1]).'.*(-1*ones(length(pulse),1)).^(0:Repetitions-1);
%unipolar
pulse_train=repmat(pulse,[Repetitions 1]).';
pulse_train=pulse_train(:);
%time
t=(0:(length(pulse_train)-1))*DwellTime;
end

Use doc or edit command to see the ownership and year at which the function is added to matlab.

MATLAB: Interpolation function returns NANs

You did not happen to show the values of t_step or t_sim

You would get NaN if you tried to interpolate outside the time range given in t_pulse

Best Answer

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MATLAB: Trapezoidal pulse generation using gensig() function

MATLAB: Interpolation function returns NANs

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