How to get a sin function in simulink

I need a sin function in Simulink to calculate something like 5sin((x/20000)t). I have tried to create a function with 5*sin((u(1)/20000)*t) but I get a syntax error.

edit: I actually need to add two signals 5sin((x/20000)t) and 10cos((x/30000)t)

Answer 1

[Jim Riggs]

I'm a little confused by the problem statement. Inside the sine function you have x/2000 * t. I'm not sure which represents the independent variable (i.e. is it a function on x or t? Is it a function on t where x is a constant?) I will assume that the function is based on time, t and x is a coefficient.

In Simulink you have a couple of choices. First is the "sin trigonometric function" block. This block simply performs the sin function on the input signal. Assuming the input signal is time, you will have to construct an input signal with a gain (multiplier) of x/2000, then multiply the output by 5 to get {5 sin (x/2000 t)}

Another option is to use the "sine wave function" block. This block has settings for "amplitude", "bias", "Frequency", and "Phase".

Set Phase to zero for a sine function, and to pi/2 for a cosine function.

Answer 2

[Star Strider]

Try this:

Sine, Cosine (link)