BPF – Band-pass filter

Block SymbolLicensing group: STANDARD
PIC

Function Description
The BPF implements a second order filter in the form

Fs = 2ξas a2s2 + 2ξas + 1,

where a and ξ are are the block parameters fm and xi respectively. The fm parameter defines the middle of the frequency transmission band and xi is the relative damping coefficient.

If ISSF = on, then the state of the filter is set to the steady value at the block initialization according to the input signal u.

Input

u

Input signal to be filtered

double

Output

y

Filtered output signal

double

Parameters

fm

Peak frequency, middle of the frequency transmission band [Hz]  1.0

double

xi

Relative damping coefficient (recommended value 0.5 to 1)  0.707

double

ISSF

Steady state at start-up flag

bool

off ..

Zero initial state

on ...

Initial steady state

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