In the proposed position sensorless sinewave PMSM drive, an internal model based back-EMF estimator is developed for performing its sensorless control. 所建构之无位置感测弦波永磁同步马达驱动系统，应用内部模式估得之反电动势从事其无位置感测控制。
Under the IMC structure, the sensitivity functions depend linearly on a design transfer function and this makes it easy to satisfy the internal stability condition. 本文使用内模式控制之设计架构，藉由设计之转移函数反推而求得系统之灵敏度函数，将可易于满足系统内部稳定之条件。
