Computer Interfacing

Computer interfacing

(b) a positional control system, as when setting the

read/write head correctly over the track (disk drive) or

when moving the platen or print head just the right

amount, as in printers.

The stepper motor is able to handle both of these tasks

with great accuracy and without any really expensive

electronics either. This is, of course, the prime reason

for its use, apart from the obvious fact of not needing

any signal conversion. Before looking at the stepper

motor in principle and application, it is worth seeing the

problems that exist in the two types of system mentioned

and how they are handled in an analogue system.

Figur ...