![]() ![]() ![]() Servo control adds a speed- and a position controller to this control structure to make it fully functional for positioning applications. This magnetic flux is mainly generated by the rotor, which is why its target value is usually zero. One current controller is used to control the motor’s torque and is thereby called torque controller, the other one is controlling the magnetic flux inside the motor. ![]() The transformations are based on the actual rotor angle, which has to be acquired by position sensors like Hall sensors or encoders. With FOC, two PI current controllers can be used to control both components of the motor current vector separately.
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