Question: Two stepping motors are used in an open-loop system to drive the leadscrews for x-y positioning. The range of each axis is 250 mm. The shafts of the motors are connected directly to the leadscrews. The pitch of each leadscrew is 3.0 mm, and the number of step angles on the stepping motor is 125.
(a) Row closely can the position of the table be controlled, assuming there are no mechanical errors in the positioning system?
(b) What are the required pulse train frequencies and corresponding rotational speeds of each stepping motor to drive the table at 275 mm/min in a straight line from point (x = 0, y = 0) to point (x = 130 mm, y = 220 mm)?