Adaptive Full-Order Observer for Induction Motor Based on Bilinear Transformation Method

Induction motors are widely applied in the fields of industry with the merits of simple structure, stable performance and convenient manufacturing. However, in some servos with high reliability requirements, the installation of the speed sensor not only increases the volume and the weight, but also reduces the reliability of the driving system. To solve this problem, speed-sensorless technique has gained an increasing number of attention and research. This paper proposes the adaptive full-order (AFO) observer based on bilinear transformation, simulation has been done to prove the effectiveness.