how to measure angular velocity from Encoder by MyRio

[xaxa9ztb]

Hi guys. I am a newbie in Labview 😞

I have a MyRio Board and a DC servo.

I want to measure angular velocity from Encoder. My Encoder has 448 pulses per once revolution.

I used Timer Interrupt to measure number of pulse in 25ms. But it was wrong.

Has anyone in here measured it? Can you tell me some ideals or solution for my problem or show my error in below VIs.?

thank a lot

timer interrupt VI

 

Main VI

[dbell0971]

Hi xaxa,

Can you explain further what the problem is?  You said "but it was wrong", is the count wrong?  Is it throwing errors?  We can better help you if you can describe the exact problem that's occurring.

Thanks,

David B

National Instruments

Applications Engineer

[xaxa9ztb]

sorry for my lack. according to datasheet of my motor, 8700 rpm is maximum velocity. But my VI display 15000rpm. I think it not working or wrong..
thank for reading 

[PSong]

hi 

how it going?

did you find the solution?