Analysis of common problems of optical encoders installed coaxially by servo motors

Question

There is a servo motor coaxial installation of photoelectric encoder, the index is 1024 pulse / r, the servo motor and pitch of 6mm ball screw connected through the coupling, within 4ms of servo interruption, the photoelectric encoder output pulse signal after 4 times the frequency processing, a total number of pulses 5K (1K=1024), 

Q: 

(1) The role of frequency multiplication. 

(2) How many millimeters has the table moved? What is the speed of the servo motor r/min? 

Answer 1

Answer:

(1) The function of frequency doubling is to improve the pulse resolution, that is, the pulse signal output by the encoder is multiplied so that each pulse represents a smaller amount of displacement, thereby improving the processing accuracy.

(2) The table has moved 5 mm, while the speed of the servo motor is 500r/min.