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Simple algorithm for closed-loop control of stepping motors

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1 Author(s)
Grimbleby, J.B. ; Dept. of Eng., Reading Univ., UK

Stepping motors are normally operated without feedback and may suffer from loss of synchronisation. This can be prevented by the use of positional feedback. A simple control algorithm is developed which allows a stepping motor to operate effectively in open-loop mode as long as it remains synchronised, but which recovers from loss of synchronisation following a disturbance. The control algorithm can be implemented as four interconnected state machines, an up/down counter and a rate meter

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:142 ,  Issue: 1 )