Sharp X-70H Manual de usuario descargar pdf (Pagina 18)

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Principle of operation of control systems, simple design of a positioning system

[1] Principle of operation of control systems

This module adopts a pulse output type open loop control system. "Open loop control" is a system

where control is performed without positional feedback on the assumption that the motor operates

according to given input pulses. Stepping motors are often used in this control system. Stepping

motors rotate for the predetermined angle each time that a pulse signal is given. Accordingly, the rpm

of stepping motors is proportional to the number of pulses of the pulse train from this module, and the

rotation speed is proportional to the frequency of the pulse train.

Position output

Position instruction pulse

12 n

Angle of rotation

• When open loop control is used on this module, all speed data (p/s) and coordinate data (p) are

set referenced to pulses.

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Sharp X-70H Manual de usuario Pagina 18