PLL-type Position Control of Step Motors

스텝모터의 PLL 타입 위치제어

  • 김창환 (대전대학교 IT전자공학과)
  • Received : 2012.06.22
  • Accepted : 2012.07.09
  • Published : 2012.07.25


We propose a PLL-type position control method for step motors. Our control method considerably improves the instability problem at rapid acceleration or deceleration, which is a major problem of conventional open loop control methods. Moreover, our controller reduces the steady state position error to zero and guarantees lower vibration and acoustic noise at high speed. Also, our controller can produce more torque at high speed, and hence it can extend the controllable velocity range. To demonstrate the practical significance of our control method, we present some simulation results for a commercially available step motor using Simulink.


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