Kazraji, Saeed Masoumi, Ramin Bavili Soflayi, and Mohammad Bagher Bannae Sharifian. 2014. “Sliding-Mode Observer for Speed and Position Sensorless Control of Linear-PMSM”. Electrical, Control and Communication Engineering 5 (1): 20-26. https://doi.org/10.2478/ecce-2014-0003.