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A 2-D differentially coupled magnetic actuator

A novel magnetic actuator which uses a differential drive mechanism is proposed in this study. The basic structure and operating principle is shown and static torque analyses are conducted employing 3-D FEM. It is shown that the actuator can achieve a 2-DOF motion with simple control equipment and control method. Dynamic torque characteristics are analyzed. It is found that force and torque could be generated by controlling the current phases.