need help bandpass filter in simulink

Started by suc October 24, 2003
Hi,I have a couple of questions see if anyone can help:
There are about the simpowersystems of simulink.

1. I couldn't find the block reference for "discrete
2nd-order variable-tuned fliter(BANDPASS FILTER)". in
this block, there are two input-ports, F and in? what
is F?

2. PWM generator block, the input signal should be a
3-element vector for a 3-arm brigde. I have the three
modulating signals, should I combine them by using
"MUX" block and feed the output of "mux" to the
input(signals) of the PWM block?