Do we really need sensors? A Sensorless Magnetic Bearing Perspective
نویسنده
چکیده
Usually magnetic bearing consists of an actuator and a levitated object which can be either the rotor of a motor or any other ferromagnetic body. For proper function and to provide stable support, the actuator needs an accurate information about the position of the levitated body which must be given by a sensor. In many applications the displacement sensor with associated wires and cost to be avoided resulting in displacement sensorsless magnetic bearing. This paper has discussed different design issues regarding sensorless control of magnetic bearing system to answer the question “Do we really need sensors?”.
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