US 12,113,397 B2
Actively controllable six-degree-of-freedom motor device and a motor system having the same
JunYoung Yoon, Seoul (KR); HyeongMin Yoon, Goyang-si (KR); JaeHong Min, Seoul (KR); YoonSik Kwon, Seoul (KR); SangWon Jung, Gunpo-si (KR); and WonTaek Song, Seoul (KR)
Assigned to UNIVERSITY INDUSTRY FOUNDATION, YONSEI UNIVERSITY, Seoul (KR)
Filed by UIF (University Industry Foundation), Yonsei University, Seoul (KR)
Filed on Sep. 2, 2022, as Appl. No. 17/929,582.
Claims priority of application No. 10-2021-0116677 (KR), filed on Sep. 2, 2021.
Prior Publication US 2023/0062284 A1, Mar. 2, 2023
Int. Cl. H02K 1/14 (2006.01); H02K 1/27 (2022.01); H02K 3/18 (2006.01)
CPC H02K 1/14 (2013.01) [H02K 1/27 (2013.01); H02K 3/18 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A motor device comprising:
a stator assembly including:
a first support in a form of a circular cylinder;
a first magnetic coil including first windings wound around an outer face and an inner face of the first support and in a direction parallel to a first direction as a central-axis direction of the first support;
a second support in a form of a circular cylinder disposed inside or outside the first support; and
a second magnetic coil including second windings wound around a surface of the second support and in a circumferential direction of the second support; and
a rotor assembly including a permanent magnet array, wherein the array includes:
a plurality of first permanent magnets magnetized in a positive or negative radial direction; and
a plurality of second permanent magnets including first and second extending magnets magnetized in an opposite direction to the magnetized direction of the first permanent magnets, wherein each of the first and second extending magnets has a length greater than each of the first permanent magnets,
wherein the first and second permanent magnets are arranged symmetrically about the central-axis and are arranged in a form of a circular cylinder surrounding the stator assembly,
wherein the first and second extending magnets are respectively disposed in a first end area and a second end area opposite to each other of the rotor assembly.