response of state space to arbitrary input

5 次查看(过去 30 天)
Using the ss function (https://in.mathworks.com/help/control/ref/ss.html?searchHighlight=ss%20&s_tid=srchtitle_ss%20_1), we can create state space models and we can use step(sys, t) to simulate the step response of the model for a time grid t, however what if i want to give a non-trivial input different from step, like a traingular wave??
Piecewise constants can be modelled by adding signed delayed step responses but how to proceed with any general input that can be even specified in form of an array to accompany time grid?
Thanks

采纳的回答

Star Strider
Star Strider 2021-12-24
what if i want to give a non-trivial input different from step, like a traingular wave??
Use the lsim function. That is the appropriate answer to the second question as well.
Using a system from the lsim documentation and an arbitrary waveform —
A = [-3 -1.5; 5 0];
B = [1; 0];
C = [0.5 1.5];
D = 0;
sys = ss(A,B,C,D);
t = linspace(0, 10, 1500); % Time Vector
u = sum(sin((1:9)'*2*pi*t/2.5)); % Arbitrary Input
lsim(sys,u,t)
grid on
Experiment with different systems and ‘u’ vectors.
.

更多回答(0 个)

类别

Help CenterFile Exchange 中查找有关 Time and Frequency Domain Analysis 的更多信息

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by