filter 1st order

[R3g]

Hello,

 I wish to produce a filter for my application to remove the parasites, In the 1st time I produced a filter 1st ordre(y(n)=wc*x(n)+exp(-wc*Te)*y(n-1). my Problem is as follows: on the outlet side of this filter I a profit obtains >> 1 and one dephasing not =0.

      H(p)=1/(1+jw/wc)=======>??????? y(n)=wc*x(n)+exp(-wc*Te)*y(n-1)????????

I joined to you my VI and .xls file which contains the values to filtered, I have LabVIEW 6.1 BASE version, therefore I dont have Subs-VI of traitemant of signal, it is the reason for wich I must realaze this filter.
thank you.

[Henrik_Volkers]

here is my version of a running mean and exp.  filter.

It works point by point (with an array in(out)put for more than one channel)  and ignores NaNs.

Sorry for not having the time to look into your code, but keep going...  it's 'learning by DOING' (read BOING)

[SanaaT]

Hello Reg,

Why you don't use LabVIEW filters?

You can find them in the functions Palette >> Signal Processing >> Filters

Regards,

Sanaa T
National Instruments

[R3g]

Salut Sanaa

Merci de m avoir repondu...

j'utilise LV6.1 version de base, j'ai pas les fonctions de traitemant de signal....

Merci encore une autre fois...

ReG