| 摘要 |
An electric motor (10) comprising a first member (20) mounted for movement relative to a second member (40), the first member comprising a plurality of permanent magnets (21, 22, 23) spaced along a first member interface surface (24), at least two of the permanent magnets (21, 22) being immediately adjacent each other and separated by a virtual pole (60) having a first magnetic permeability and a first depth (71), the second member having a plurality of coils (A1, B1, C1, D1, A2, C2, D2, D2), each of the coils associated with one of a number of phases (A, B, C, D) and one of a number of second member interface surfaces (48, 49, 50), each of the second member interface surfaces having a second depth (72) and arranged generally opposite to a corresponding portion of the first member interface surface (24), the permanent magnets (21, 22, 23) arranged such that each magnet has a magnetic field orientation (27, 28, 29) that is in the same general direction relative to a proximate portion of the first member interface surface and is generally normal to the proximate portion of the first member interface surface, and wherein the first depth and the second depth may be about the same. |
