Question: Two stepping motors are used in an open loop system to drive the lead screws for xy positioning. The range of each axis is 250

Two stepping motors are used in an open loop system to drive the lead screws for xy positioning. The range of each axis is 250 mm. The shafts of the motors are connected directly to the lead screws. The pitch of each lead screw is 3.0 mm, and the number of step angles on the stepping motor is 125.
(a) How 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 in order 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)?

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a Table position can be controlled to 0024 mm b Travel rate of the table v t 27... View full answer

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