Ls Automotive Technologies Co., Ltd.

Da-Hee Sim

Seong-Wook Lee

Yeon-Muk Choi

Won-Yong Lee

Byung-Cheol Na

Disclosed is a resolver, which includes a stator having at least one excitation coil and at least one output coil, and a rotor disposed at a center space in the stator with a predetermined gap from the stator, the rotor rotating based on a rotary shaft to change a gap permeance with respect to the stator, wherein an area ratio (Ar/As) between the stator and the rotor satisfies Equation 1 below to prevent magnetic saturation of the resolver, improve measurement precision and reduce manufacture costs without increasing a size or weight of the resolver:0.22&#x2264;&#x2264;0.37&#x2003;&#x2003;Equation 1

Resolver

Disclosed is a resolver, which includes a stator made of a magnetic material and having a plurality of teeth and a plurality of slots alternately formed at an inner side thereof; insulation covers respectively having a tooth insulating unit formed at an inner side thereof corresponding to the teeth and mounted to the stator at both upper and lower surfaces of the stator; and coils wound on the teeth with the tooth insulating unit being interposed therebetween, wherein a coil occupying ratio per slot, which is defined by the following equation and represents a ratio of area occupied by the coils in a slot to which the insulation covers are fixed, is 35% or below:Coil occupying ratio per slot=(area occupied by coils in a single slot)/(area of a single slot)&#x2003;&#x2003;Equation.

Disclosed is a resolver robust against external noise and having a reduced error in the detection of a rotation angle, which includes a stator made of a magnetic material and having a plurality of teeth and a plurality of slots alternately formed at an inner side thereof, insulation covers respectively having a tooth insulating unit formed at an inner side thereof corresponding to the teeth and mounted to the stator at both upper and lower surfaces of the stator, and coils wound on the teeth with the tooth insulating unit being interposed therebetween, wherein regarding winding widths of coils located at an outermost circumference among the wound coils, a ratio of a shortest winding width to a longest winding width is 0.69 or above and 1 or below.

Disclosed is a resolver, which includes a stator having at least one excitation coil and at least one output coil, and a rotor disposed at a center space in the stator with a predetermined gap from the stator, the rotor rotating based on a rotary shaft to change a gap permeance with respect to the stator, wherein the stator includes a back yoke having a ring-shaped body, and a plurality of teeth formed at an inner circumference of the back yoke so that the excitation coil and the output coil are wound thereon, wherein the rotor includes a ring-shaped body having a center hole into which the rotary shaft is inserted, and a plurality of salient poles formed at an outer circumference of the ring-shaped body.

Disclosed is a resolver, which includes a stator having at least one excitation coil and at least one output coil, and a rotor disposed at a center space in the stator with a predetermined gap from the stator, the rotor rotating based on a rotary shaft to change a gap permeance with respect to the stator, wherein a thickness (tr) of the rotor and a thickness (ts) of the stator satisfies the equation: tr&#x2212;ts&#x2265;0.7 [mm], thereby efficiently offsetting an influence caused by an assembly error, which is commonly generated when assembling a resolver, improving the measurement precision, facilitating a resolver designing work and reducing manufacture costs.

Growing community of inventors

Gyeonggi-do, South Korea

Da-Hee Sim