How can I get a ramp response for the transfer function in the MATLAB?

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Answer 1

[Ameer Hamza]

Use lsim(). It can calculate dynamic response of any system to any input signal. For ramp signal define your input as

t = 0:0.1:10;  % the time vector
transferFunction = tf(1, [1, 1])
input = t;   % assuming ramp with slope=1
y = lsim(tf, input, t)

[Abhishek Kumar]

for unit ramp response what to do?

[Ameer Hamza]

Abhishek Kumar, input=t means unit ramp.

[ahmad Elshafee]

it returns

Error using lsim (line 88)

Not enough input arguments.

[Kevin Chen]

@ahmad Elshafee I believe Ameer intended to write

y = lsim(transferFunction, input, t);

rather than

y = lsim(tf, input, t);

Answer 2

[FARAH]

%CS_G6
%EXERCISE 2.2
numerator = 0.1;
denominator = [1,0.02];  %define  the first order transfer function
sys = tf(numerator,denominator);  % transfer function
step (sys)  % plotting step response

impulse (sys) % plotting impulse response

ramp(sys); % plotting ramp response

Unrecognized function or variable 'ramp'.

[Walter Roberson]

Rafael points out that there is no ramp() function.