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Command stem for the mass spring damper system

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Silas Teixeira
Silas Teixeira on 27 Feb 2014
Commented: Silas Teixeira on 27 Feb 2014
Does anybody here could help me to use the command "stem" for the mass-spring-damper system? I have some equations like:
equation := ode({m*x''(t) + c*x'(t) + k*x(t), x(0) = 0 , x'(0) = 1}, x(t))
where: m = mass, c = dampering constant , k = spring constant
or using Laplace
num = 1;
den = [m c k];
step = (num,den)
or using state-space model above using the ss function in MATLAB
A = [0 1; -k/m -c/m];
B = [0; 1/m];
C = [1 0];
D = [0];
sys = ss(A, B, C, D)
step(sys)
  2 Comments
Silas Teixeira
Silas Teixeira on 27 Feb 2014
yes Anuj... could you help me? Can I plot something else with this command?

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Answers (1)

Anuj
Anuj on 27 Feb 2014
You can simply do
stem(step(sys))
you can read the documentation about it. there is nice explanation about the command. for that, type
doc stem
regards

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