High force rotary actuator
AssigneeQM Power, Inc.
InventorCharles J. Flynn
Life of this patent
Estimating the term…
Abstract
An actuator has a first stator with four first poles, a second stator with four second poles aligned with the four first poles, at least one permanent magnet between the first stator and the second stator, four armatures positioned at terminal ends of the aligned four first poles and four second poles and coils wrapped around the first stator and the second stator. A controller selectively applies current to the coils to cause flux created by the at least one permanent magnet to traverse through selective poles of the first stator and the second stator to selectively alter air gap sizes associated with the four armatures.
Claims27
An actuator comprising:
- a first stator with a first plurality of poles defining a first linear axis and a second linear axis;
- a second stator with a second plurality of poles aligned with the first plurality of poles to form first linear axis aligned poles and second linear axis aligned poles;
- at least one permanent magnet between the first stator and the second stator;
- a plurality of armatures, each armature separated from one of the linear axis aligned poles by an air gap;
- coils wrapped around the first plurality of poles and the second plurality of poles;
- a controller to selectively apply current to selective coils to control a first size of a first air gap between a first armature and a first end of the first linear axis aligned poles to form a first linear motion and to control a second size of a second air gap between a second armature and a first end of the second linear axis aligned poles to form a second linear motion;
- and
- a shaft to translate the first linear motion and the second linear motion to rotary motion of the shaft.
An actuator comprising:
- a first stator with four first poles;
- a second stator with four second poles aligned with the four first poles;
- at least one permanent magnet between the first stator and the second stator;
- four armatures positioned at terminal ends of the aligned four first poles and four second poles;
- coils wrapped around the first stator and the second stator;
- and
- a controller to selectively apply current to the coils to cause flux created by the at least one permanent magnet to traverse through selective poles of the first stator and the second stator to selectively alter air gap sizes associated with the four armatures.
An actuator comprising:
- a first stator with a first plurality of poles defining a first linear axis and a second linear axis;
- a second stator with a second plurality of poles aligned with the first plurality of poles to form first linear axis aligned poles and second linear axis aligned poles;
- at least one permanent magnet between the first stator and the second stator;
- a plurality of armatures, each armature separated from one of the linear axis aligned poles by an air gap;
- coils wrapped around the first plurality of poles and the second plurality of poles;
- a controller to selectively apply current to selective coils to control a size of the air gap between each of the armatures and one of the linear axis aligned poles to form linear motions.
Dependencies are inferred from the claim text.