| 摘要 |
<p>A linear motor comprising a DC magnetic field of alternating polarity arranged in a longitudinal axis, a coil assembly located substantially in a plane parallel to an immersed in the alternating magnetic field, said coil assembly containing individual coil loops (10) of essentially rectangular shape and having end turn areas (32, 34) arranged parallel to said longitudinal axis of the magnetic field and coil side areas being perpendicular to said longitudinal axis of the magnetic field with each coil side having a coil side width (12) (CSW) and each coil loop having a coil outside width (14) (COW) and coil inside width (16) (CIW) such that (COW = CIW + 2 X CSW) wherein the coils have a coil outside length (18) (COL), forming a coil assembly area (CAA) approximately equal to COW X COL and said coil assembly has a coil assembly thickness (CAT) in a direction creating a coil assembly volume (CAV) approximately equal to the coil assembly area (CAA) times the coil assembly thickness (CAT) pursuant to the following equation: CAV ≈ CAT X CIW X COL. The coil assembly is formed with a plurality of phases each formed in the manner of the first phase, each phase uniformly and sequentially offset from adjacent phases and means for switching current successively between the phases thereby alternating the magnetic fields within the coil assembly sequentially, the plurality of offset phases substantially filling the coil inside width (CIW) of the first phase, such that CIW = CSW X (#ζ - 1). The above coil assembly optimally includes a longitudinal opening along the end turn areas (32, 34) within the coil assembly volume allowing non-magnetic metallic members for heat dissipation and structural strength, including a mounting bracket (36) on one end turn area (32), and a heat sink cap (40) enclosing the opposite end turn area (34).</p> |
