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?

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);

Answer 1

[Shashwat Bajpai]

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!