I need to find an acceleration transfer function that relates the acceleration of the sprung mass and the road surface. Is the code I am using correct?

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Austin Kim
Austin Kim 2019-12-7
回答： Shashwat Bajpai 2019-12-11
clc
close all
clear
ms = 300;
mu = 50;
ks = 16000;
bs = 1000;
kt = 160000;
A = [ 0 1 0 0; ks/ms -bs/ms ks/ms bs/ms; 0 0 0 1; (kt+ks)/mu bs/mu -ks/mu -bs/mu];
B = [ 0 0; 1/ms 0; 0 0; -1/mu kt/mu];
C = [0 1 0 0];
D = [0 0];
sys = ss(A,B,C,D);
step(sys);
hold on
figure
bode(sys);

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回答（1 个）

Shashwat Bajpai
Shashwat Bajpai 2019-12-11
I would suggest using the tf function to create the transfer function further you can use ss2tf function to change your existing state space model to transfer function form. The following links might help:
tf: https://www.mathworks.com/help/control/ref/tf.html?
ss2tf: https://www.mathworks.com/help/matlab/ref/ss2tf.html
Hope this helps!

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