US 2016/0111948 A1 · FINE ELEMENT MAGNET ARRAY

Abstract

A set of symmetrically segmented square prism Permanent Magnet (PM) halves in a 45-45-90 triangular prism and a rectangular square prism with predefined 45° stepped magnetizations are designed as Fine Elements (FEs), bringing finely adaptive mosaicking advantages for array arrangement. Optimized Halbach effect FE PM pole modules in cuboidal and isosceles trapezoidal prism shapes are invented to provide an augmented one-side-operating field. Simulation data show that typical dual layer FE PM arrays generate high-fidelity sinusoidal waveforms within air-gaps with peak field strengths of up to 1.2 Tesla. Featuring a pole width-to-thickness ratio ranging from 1 to 6, FE PM motor tracks with a series of scale, format, and sectional features are constructed in lightweight ferrous and/or nonferrous structures, which energize OEM and/or FE current carrying winding coils to implement linear and curvilinear motors with high power/force/torque density and low force ripple.

Claims24

Dependent claims

A fine element (FE) magnet array configuration, comprising an arrangement of a set of predefined permanent magnet (PM) FEs;

said PM FEs comprising two 3D shapes in a 45-45-90 triangular prism and a rectangular square prism that are symmetrically segmented geometries from a square prism reference;
said PM FEs being magnetized with a series of magnetization orientations each represented by a magnetization vector that is rotated in substantial 45° steps from an edge reference within said FE front face;
each of said PM FEs having a distinctive FE pattern of a front face polygon of said FE prism with a magnetization vector drawn inside;
and
said set of predefined PM FEs having 8 independent elements each with a predetermined FE pattern.

2 more elements

A FE PM servomotor assembly, comprising:

An FE PM track assembly comprising a plurality of South/North alternating MAGTP or MAGYP pole modules retained in a linear or curvilinear format to provide an alternating magnetic field in said active front of said FE PM track;
a three-phase current-carrying coil forcer guided by a bearing device to be sliding along said active front of said linear or curvilinear FE magnetic track;
and
a servomotor drive sub-system with an integrated encoder energizing said coil forcer in said closed loop controlled mode to operate said coil forcer and a secured payload along said linear or curvilinear FE PM track.

1 more element

Dependencies are inferred from the claim text.

Fine element magnet array

Life of this patent

Fine element magnet array

Life of this patent

Abstract

Claims24