Abstract: A synchronous linear motor, including: a stator including projecting poles including magnetic bodies; and a movable element arranged opposed to the projecting poles through a space. The movable element includes a core with a magnetic body, coils, and permanent magnets arrayed along a moving direction. The core includes core backs and teeth projecting from the core backs toward the projecting poles. The coils are at least wound around the teeth on both end sides in the moving direction. The permanent magnets are arranged at center portions of the teeth along a projecting direction of the teeth. A polarity of a magnetic pole of the permanent magnet is the same as a polarity of an opposed magnetic pole in an adjacent permanent magnet. The number of different shapes of the permanent magnets or the number of different magnetic characteristics of the permanent magnets is two or more.

Abstract: A synchronous linear motor, including: a stator including projecting poles including magnetic bodies; and a movable element arranged opposed to the projecting poles through a space. The movable element includes a core with a magnetic body, coils, and permanent magnets arrayed along a moving direction. The core includes core backs and teeth projecting from the core backs toward the projecting poles. The coils are at least wound around the teeth on both end sides in the moving direction. The permanent magnets are arranged at center portions of the teeth along a projecting direction of the teeth. A polarity of a magnetic pole of the permanent magnet is the same as a polarity of an opposed magnetic pole in an adjacent permanent magnet. The number of different shapes of the permanent magnets or the number of different magnetic characteristics of the permanent magnets is two or more.

Abstract: A magnetic wave gear device (1A, 1B, 1F) includes: a first member (10), a second member (20), and a third member (30) which are rotatable relative to one another around a rotation axis (R). The second member (20) is disposed between the first member (10) and the third member (30), and includes magnetic material pieces (21). The first member (10) includes first permanent magnets (12A, 12B). The third member (30) includes: a plurality of pole teeth (32), a pole tooth (32) being wound with a coil (33); and second permanent magnets (34B), each second permanent magnet (34B) being disposed between pole teeth (32) next to each other, and the magnetic poles of sides of the second permnanent magnets (34B) facing the second member (20) being the same pole.

Abstract: A magnetic wave gear device (1A, 1B, 1F) includes: a first member (10), a second member (20), and a third member (30) which are rotatable relative to one another around a rotation axis (R). The second member (20) is disposed between the first member (10) and the third member (30), and includes magnetic material pieces (21). The first member (10) includes first permanent magnets (12A, 12B). The third member (30) includes: a plurality of pole teeth (32), a pole tooth (32) being wound with a coil (33); and second permanent magnets (34B), each second permanent magnet (34B) being disposed between pole teeth (32) next to each other, and the magnetic poles of sides of the second permnanent magnets (34B) facing the second member (20) being the same pole.