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Instabilities in dual stepping motor systems

Instabilities in dual stepping motor systems

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© The Institution of Electrical Engineers
Published

The performance of a multi-motor system with a single common closed-loop has been investigated with particular reference to a two-motor system. The system was found to be unstable, with the velocities of the motors oscillating with increasing amplitude. The origin of the oscillations is discussed and methods for their elimination are presented. In conclusion, it is evident that the simple control strategy used is inadequate for stable operation of a multi-motor system.

Inspec keywords: closed loop systems; stability; stepping motors

Other keywords: stability; dual stepping motor systems; common closed-loop; control; velocities; oscillations

Subjects: Small and special purpose electric machines; Control of electric power systems; Stability in control theory

References

    1. 1)
      • P.P. Acarnley . (1984) , Stepping Motors: a Guide to Modern Theory and Practice.
    2. 2)
      • Acarnley, P.P.: `Stepping motor control techniques', Proc. Conf. on Drives/Motors/Controls, 1984, Brighton, p. 106–112.
    3. 3)
      • McSparren, R.M.: `Digital closed-loop phase-locked stepper motor control', Proc. Conf. on Incremental Motion Control Systems and Devices, 1976, Illinois, p. 01–09.
    4. 4)
      • Hill, R.J., Acarnley, P.P.: `Interacting stepping motor systems: closed-loop control using waveform detection', Proc. IERE Conf. on Real Time Control of Electromechanical Systems, 1984, London, p. 43–48.
    5. 5)
      • B. Bechtle , G. Schunemann , G. Skudelny , V. Zimmermann . Delayed closed-loop scheme for stepping motor control. IBM J. Res. & Dev. , 3 , 235 - 243
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