How Do You Calculate Angular Resolution and RPM from Encoder Pulses?

[JohnielWhite]

I was given the following question "An optical incremental encoder that produces 1,000 pulses per revolution is connected to the shaft of a motor. Determine the angular resolution of the encoder in degrees and the motor speed in RPM, if the encoder outputs 5,000 pulses
in 1 second."

I am not sure if this is correct but this is what is did.

Angular resolution= 360deg/1000
= 0.36deg/pulse

Using the formula frequency= (line count* RPM)/60
==> RPM= (60*f)/line count
= (60*5000)/1000
= 300rpm

Could some1 please verify this? Thanks in advance

 

[lewando]

Looks right.

 

[JohnielWhite]

thanks for replying to my post... much appreciated... can u suggest any website that i can read more about optical and differential pressure sensors?

 

[berkeman]

thanks for replying to my post... much appreciated... can u suggest any website that i can read more about optical and differential pressure sensors?

I find that using Google Images works well for finding information on stuff like this. Maybe give that a try. wikipedia.org is also pretty helpful often for learning about devices.

 

[JohnielWhite]

ok... i'll get on it asap... thanks again for your response...