High force rotary actuator
AssigneeQM Power, Inc.
InventorCharles J. Flynn
Life of this patent
Estimating the term…
Abstract
An actuator includes a first stator with four first poles and a second stator with four second poles aligned with the four first poles. A permanent magnet is attached to the first stator and the second stator. Four moving armatures are positioned at terminal ends of the four first poles and the four second poles. Coils are wrapped around the first stator and the second stator. A controller selectively applies current to the coils to migrate flux created by the permanent magnet through selective poles of the first stator and the second stator and thereby alter the size of air gaps associated with the four moving armatures.
Claims19
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 aligned poles including first linear axis aligned poles and second linear axis aligned poles;
- a permanent magnet between the first stator and the second stator;
- a plurality of moving armatures, each moving armature separated from one of the aligned poles by an air gap;
- first coils wrapped around the first plurality of poles and second coils wrapped around the second plurality of poles;
- a controller to selectively apply current to the coils to control a size of a first air gap between a first moving 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 moving 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;
- a 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 migrate flux created by the permanent magnet through selective poles of the first stator and the second stator to selectively alter air gap sizes associated with the four armatures.
Dependencies are inferred from the claim text.