## Theory and applications of step motorsBenjamin C. Kuo |

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### Contents

STEP MOTORS AS CONTROL DEVICES | 7 |

MATHEMATICAL MODELING OF STEP MOTORS | 33 |

SOME ASPECTS OF MODELING AND DYNAMIC SIMULATION | 76 |

Copyright | |

13 other sections not shown

### Common terms and phrases

acceleration air gap applications bipolar closed-loop control coils constant control systems damping deceleration diagram displacement dynamic eddy currents EHSM electric step motor energized equations excitation feedback flux linkages frequency friction function holding torque hydraulic motor increased incremental inductor inertia input lead angle lead screw linear linear motor logic loop low speed magnetic circuit magnetomotive force maximum mechanical motion msec msec/div multiple-stack mutual inductances Newton meter number of steps one-phase-on open-loop open-loop control operation oscillator output oz-in permanent magnet permeance phase currents platen ramp rotation rotor position rotor teeth scheme sensor sequence servo-valve shaft shown in Figure shows simulation single-stack Single-step response slew rate static torque curves stator teeth stator windings step angle step motor system step response stepping rate steps per second steps/sec subroutine switching angle synchronous three-phase tooth pitch two-phase unipolar velocity VR motor VR step motor zero