For permanent magnet synchronous machines (PMSMs), high-performance control
strategies rely on sensors to obtain accurate information of rotor position and speed …

This article reviews the state-of-the-art back electromotive force (EMF) based sensorless
schemes for synchronous machines. Field-oriented control (FOC) of a synchronous machine …

This paper proposes a sensorless speed control strategy for a permanent-magnet
synchronous motor (PMSM) based on a new sliding-mode observer (SMO), which …

In order to reduce the adverse effect of parameter variation in position sensorless speed
control of permanent magnet synchronous motor (PMSM) based on stator feedforward …

This brief proposes an iterative sliding mode observer (ISMO) for the robust sensorless
control of a permanent magnet synchronous motor with variable parameters. In the …

This paper presents a method to detect the rotor position of permanent-magnet motors at
standstill, which is suitable to avoid temporary reverse rotation at startup or starting failure …

This paper presents an adaptive sliding-mode observer for the speed-sensorless field-
oriented control of induction motors. The observer detects the rotor flux components in the …

This paper proposes two control algorithms for a sensorless speed control of a PMSM. One
is a new low pass filter. This filter is designed to have the variable cutoff frequency according …

Back-EMF zero crossing-based sensorless motor driving method suffers from a starting
problem since there is no back-EMF at standstill, while the V/f or I/f based method is …

Many of the estimation techniques developed to achieve speed or position sensorless,
motor drives suffer from the variation of motor parameters such as the stator resistance …