is it possible to give different frequencies input for different time span in simulink ?

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Aniket 2013-2-12

Hello,

is it possible to give different frequencies for different timespan in simulink ?

for example my input is F(t) = cos(w*t)

i am simulating for t = 30 secs

for first time span t1 = 0:10 secs my input signal frequency is cos (10*t1)

for first time span t2 = 10:20 secs my input signal frequency is cos (20*t2)

for first time span t3 = 20:30 secs my input signal frequency is cos (30*t3)

how should i do this is Simulink ?

Azzi Abdelmalek 2013-2-12

编辑：Azzi Abdelmalek 2013-2-13

You can use a multiport switch block with three sine wave block

set stop time to 29.99

Aniket 2013-2-13

If i want to use same figure but i want to change my input signal after 5 secs

means for t1 = 0 :5 .... 1 signal

t2 = 5 : 10 .....2 signal

t3 = 10 : 15 ..... 3 signal

and if i want to use more or less data ports ..which parameters changes for control input signal which is fed to multiport switch..

actually i am giving this input to adaptive hopf oscillator using simulink i have implemented equations in simulink ...

Azzi Abdelmalek 2013-2-13

编辑：Azzi Abdelmalek 2013-2-13

gain=0.2
stoptime=14.99

Try to figure it out

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