Resolver
AssigneeMabuchi Motor Co., Ltd.
InventorAkira Matsunawa
Life of this patent
Estimating the term…
Abstract
A resolver includes a first coil group and a second coil group. The first coil group has a first exciting coil and a first detecting coil that have a multiplication factor of angle of nX (where n is a natural number equal to or greater than three), are placed coaxially with the axis of rotation of the rotor, and each have a ring shape. The second coil group has a second exciting coil and a second detecting coil that have a multiplication factor of angle of (n−1)×, are placed coaxially with the axis of rotation of the rotor, and each have a ring shape. Furthermore, the first coil group and the second coil group are provided at positions different in a radial direction from each other.
Claims7
A resolver that detects an angle of rotation of a rotor relative to a stator, the resolver comprising:
- a first coil group including a first exciting coil and a first detecting coil that have a multiplication factor of angle of n×(where n is a natural number equal to or greater than three), are placed coaxially with an axis of rotation of the rotor, and each have a ring shape;
- and
- a second coil group including a second exciting coil and a second detecting coil that have a multiplication factor of angle of (n−1)×, are placed coaxially with the axis of rotation of the rotor, and each have a ring shape, wherein
- the first coil group and the second coil group are provided at positions different in a radial direction from each other.
Dependencies are inferred from the claim text.