Use LabView to simulate 2 Sine Waves and then Filter Waves above 50Hz

[Northbysouth]

Homework Statement

Create a VI that will: simulate two sine waves of different frequencies (run it
for 20 and 12 0 Hz). Add the sine waves and plot the sum. Then use a filter to
remove signals above 50 Hz, and plot
the filtered res

Homework Equations

The Attempt at a Solution

I have attached an image of what my program currently. I've managed to plot the 20Hz and 120Hz sine waves in a waveform graph, but I'm having difficulty with filtering out the signals with a frequency above 50Hz.

Any suggestions and advice would be appreciated. Thank you.

EDIT: I tried going into properties with the filter and setting the cutoff frequency at 50Hz, but the error message still shows.

EDIT 2: Just realized that I how I wired the signal to the filtered signal didn't make sense. Have now fixed that, but the filtered signal doesn't look all that different from the unfiltered signal.

 

[KataKoniK]

Some suggestions for improving your program:

1. Make sure you are using the correct filter for your desired frequency range. For example, a low-pass filter will remove signals above the cutoff frequency, while a high-pass filter will remove signals below the cutoff frequency.

2. Check your filter settings and make sure they are appropriate for the frequencies you are working with. For example, if your frequencies are in Hz, make sure your filter cutoff frequency is also in Hz.

3. Consider using a spectrum analyzer to visualize your signals before and after filtering. This will help you see if the filter is working as expected.

4. Try using different filter types and settings to see which one gives you the best results.

5. Make sure you are properly scaling your signals before and after filtering. If your signals are not scaled correctly, it can affect the appearance of the filtered signal.

Overall, it's important to have a good understanding of the theory behind filtering and how to properly use filters in LabVIEW. You may want to do some additional research or consult with a colleague or mentor for further guidance.