How to use Butterworth filter in myRIO 1900

[srikesh]

I am reading force sensing resistor (FSR) and single axis load cell data using myRIO inside a timed loop running at 10,000 Hz. I wanted to filter these data to remove noise using Butterworth filter. I don't know how to use it. Please help me on the same.

[GerdW]

Hi srikesh,

I don't know how to use it

Apparently you know how to use them - they are already in your code…

So what is the real question/problem here?

Did you read the LabVIEW help for that filter function? Did you wire ALL inputs as needed?

[srikesh]

Apparently. I don't know about the other inputs that are required to be provided to the filter like sampling frequency, low cutoff, and order.

[GerdW]

Hi srikesh,

I don't know about the other inputs that are required to be provided to the filter like sampling frequency, low cutoff, and order.

You wrote you run those functions in a loop at 10kHz: this would be your sampling frequency. (Do you really run this at 10kHz?)

Cutoff frequency and filter order depends on your requirements: you should know them. In fact you should know your requirements before even starting to code! And you should know the basics on filter functions: I guess you have some books at hand or are able to use Wikipedia…

[srikesh]

Yes, I do run it at 10 KHz.