how can i change the matrix block in Simulink?

Question

Min DongJu 2013-2-13

i want to make a time-varying system by using Simulink.

And i wanna change the matrix block every loop in time-varying system.

i already know the time-varying matrix at every loop.

ex) M(t)x''+kx=F(t)

the time inverval is 1sec. and stop time is 5 sec.

t=0, M=[0 0;0 0];

t=1, M=[1 0;0 0];

t=2, M=[0 2;0 0];

t=3, M=[0 0;5 0];

t=4, M=[0 0;0 6];

t=5, M=[0 2;0 6];;

i just want to change the M matrix in the Gain block every loop.

or if there is another method to simulate the time-varying system, plz let me know.

Answer 1

Ryan G 2013-2-14

You can build the system as you would any other ode. You can use a lookup table to specify M over this time span.