ELECTROMAGNETIC ACTUATOR

摘要

An actuator includes:
a housing;
a plurality of electromagnets positioned around an outer periphery of said housing so that said plurality of electromagnets define at least one generally helical path;
a rotor head mounted for rotation and translation within said housing;
a magnet mounted to said rotor head;
an output shaft attached to said rotor head;
a spring having a first end and a second end, the first end of said spring being attached to said rotor head, the second end of said spring being selectively engageable and disengagable with said housing; and
a control system operatively associated with said plurality of electromagnets, said control system selectively activating said electromagnets to cause said rotor head to move relative to said housing.