simulation help please!

[subseb]

I am trying to run a FIR filter using simulink I have my basic algebraic loop and weightings running fine. However the simulation is sample based and I need to increase one of the variables value in the gain amplification block during simulation. Basically it is a goertzel filter and I am trying to increase the fi (frequency of interest) value with respect to time, so as to achieve a frequency sweep when the simulation is run. Does anyone know of an easy way of doing this? I tried using the u +Ts block for weighted time, but this just gave me a constant value.

 

[xnuke]

You should be able to use a ramp function block and send its output to the workspace with a given variable name (e.g., fi), then refer to that variable name in the gain amplification block configuration.

xnuke

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