Position Error Compensation Method for Resolvers using Kalman Filter

칼만 필터를 적용한 레졸버 위치 오차 보상기법

Ahn, Ji-Hae;Ahn, Hyung-Jin;Park, Joon-Yeol

  • Received : 2014.11.17
  • Accepted : 2015.03.10
  • Published : 2015.05.29


As rotor position is a reference of coordinate in vector control of PMSM, the information of exact rotor position is required. To measure the position of motors, hall-effect sensors, encoders, resolvers, etc. are used. Among these sensors, resolvers have good endurance in the variation of circumstance and can be used in a wide range of temperature, but resolvers are less exact than encoders. In addition, resolvers have a drawback that the output signal contains periodic error components. Thus, this paper proposes a compensation method for the unique position error in resolvers using Kalman filter to achieve high performance control of PMSM. The validity of the proposed scheme is demonstrated through simulation studies.


Resolver;Position Error;Kalman Filter;PMSM


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