Simulink Control Design™ - MathWorks

p.XLim = {[0.1 1000]};

f = figure;

bode(sys_1st_order_approx,sys_2nd_order_approx,sys_exact,p);

h = legend('sys_1st_order_approx','sys_2nd_order_approx','sys_exact',...

'Location','SouthWest');

h.Interpreter = 'none';

In the case of a first order approximation, the phase begins to diverge around 50 rad/s

and diverges around 100 rad/s.

Close the Simulink model.

bdclose(model)

2 Linearization