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PROPOSITION OF THE DIFFERENTIAL FEEDBACK CONTROL OF ROTOR’S POSITION FOR CONTACTLESS SUPPORT
Kozánek, Jan ; Synek, L. ; Sýkora, Petr
This paper proposes a differential method for the position control of electromagnetic actuator. The differential method is frequently used by active magnetic bearing in industrial application too. The controller is consisted of position regulator and two current regulators with auxiliary differential part, where is counted a difference between biases current and position current. Thus the controller contains a current feedback and a position feedback. The current feedback is used as current control into exciting coil and the air-gap is measured by an eddy current position sensor. The position stabilization of the contactless rotor is provided by suitable analogue regulator.

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