JP5396592B2 - Redundant resolver stator structure - Google Patents

Description

  The present invention relates to a redundant resolver stator structure, and in particular, a plurality of annular stators are overlapped in an axial direction and coupled to each other, and each redundant stator winding is wound around a protruding magnetic pole independent from each other. The present invention relates to a new improvement for reducing mutual interference of signals in a system.

This type of redundant resolver stator structure used heretofore has the same structure as disclosed in Patent Documents 1 and 2 described later, for example.
That is, a stator winding 4 composed of an excitation winding and an output winding is wound around each protruding magnetic pole 2 of the ring-shaped stator 1 via a ring-shaped insulating member 3.

  Further, a part of the insulating member 3 protrudes in a radial direction to form a terminal pin holding portion 6 having a terminal pin 5, and an end line (not shown) of the stator winding 4 is provided on the terminal pin 5. It is connected by teasing.

  In the stator winding 4, in order to form at least a double redundant system, each protruding magnetic pole 2 is provided with a stator winding having the same configuration for forming at least a double redundant system independent from each other. When a failure such as disconnection occurs in the winding 4, a double redundant system can be achieved by switching to the other stator winding.

US Pat. No. 5,920,135 US Pat. No. 6,044,545

Since the conventional redundant resolver stator structure is configured as described above, the following problems exist.
That is, since each pair of stator windings wound around each projecting magnetic pole of the annular stator is wound around one projecting magnetic pole, the magnetic path in the annular stator or each stator winding The signal lines are affected by each other's magnetic flux, and when an abnormality occurs in one system and the signal changes, an electromagnetic effect occurs in the other system, increasing the reliability of the redundant system. It was difficult to improve.

The redundant resolver stator structure according to the present invention includes a first annular stator having a plurality of first projecting magnetic poles at a predetermined angle, a second annular stator having a plurality of second projecting magnetic poles at a predetermined angle, and the first A first stator winding which is wound around the projecting magnetic pole via a first insulating member and is composed of an excitation winding and an output winding, and an excitation winding which is wound around each of the second projecting magnetic poles via a second insulating member. And a second stator winding composed of an output winding, and the first and second annular stators are axially overlapped with each other, and the first and second annular stators and the first and second stators In a configuration in which at least a double redundant system is formed by windings, winding of the first and second stator windings is completed on the outer periphery of the first and second insulating members of the first and second protruding magnetic poles. before SL first state, the second annular stator, the injection molding machine Insulation resin is the first never formed by insert resin molding to cover the respective stator windings, with attached together form a more along the axial direction to connect the second insulating member, The thickness of the insulating resin along the axial direction is such a dimension that the stator windings do not contact each other.

Since the redundant resolver stator structure according to the present invention is configured as described above, the following effects can be obtained.
That is, a first annular stator having a plurality of first protruding magnetic poles at a predetermined angle, a second annular stator having a plurality of second protruding magnetic poles at a predetermined angle, and a first insulating member on each first protruding magnetic pole. A first stator winding comprising an excitation winding and an output winding, and a first stator winding comprising an excitation winding and an output winding wound around each of the second projecting magnetic poles via a second insulating member. Two stator windings, wherein the first and second annular stators are axially overlapped with each other, and at least double redundant by the first and second annular stators and the first and second stator windings. In order to form a system, it is possible to prevent mutual interference between signals of each system, to output an electromagnetically independent signal, to obtain a highly reliable redundant system, and the first and second annular stators, Injection with an injection molding machine bonded by insulating resin Because it is formed by over preparative resin molding, each annular directly through the core between the stator to reduce the unnecessary magnetic flux back and forth between two systems, it is possible to obtain a stable signal output.

  According to the present invention, a plurality of annular stators are overlapped in the axial direction and coupled together, and each stator winding of the redundant system is wound around protruding magnetic poles independent from each other, thereby reducing mutual interference of signals of each redundant system. An object of the present invention is to provide a redundant resolver stator structure.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a redundant resolver stator structure according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part. Moreover, this is used about the structure of the ring-shaped stator of the resolver of FIG.2 and FIG.3.
Although only a part of the reference numeral 1 is shown in FIG. 1, it is a first annular stator similar to the annular stator 1 shown in FIGS. 2 and 3, and only the first protruding magnetic pole 2 is shown. .

  Further, only a part of the first annular stator 1 is shown below the first annular stator 1, but a second annular stator 1A having the same configuration as the first annular stator 1 is shown. Only the second protruding magnetic pole 2A of the annular stator 1A is shown.

  Each projecting magnetic pole 2, 2A of each ring-shaped stator 1, 1A (FIG. 1 shows only one each, but actually, a plurality of them are provided at predetermined angular intervals as shown in FIG. 3). On the other hand, first and second stator windings 4, 4 </ b> A comprising a known excitation winding 4 a and output winding 4 b are wound and provided.

As described above, first, second annular stator 1,1A state where winding is completed for each stator winding 4,4A For each protruding pole 2,2A on the outer periphery of the insulating member 3,3A is It is coupled to one body shape by along the axial direction to connect with the insulating member 3,3A by the insulating resin 10 from each other. The insulating resin 10 does not cover the stator windings 4 and 4A.
The thickness of the insulating resin 10 is such that the stator windings 4 and 4A do not come into contact with each other, and can be insert resin molding by an injection molding machine.

  Accordingly, the redundant resolver stator structure 20 composed of a double system configured as shown in FIG. 1B has the ring-shaped stators 1 and 1A coupled via the insulating resin 10, and the first redundant system. The first stator winding 4 of the first system and the second stator winding 4A of the second system, which is the second redundant system, are provided independently on the first and second projecting magnetic poles 2 and 2A, respectively. Therefore, it is possible to prevent mutual interference between signals of each system, output an electromagnetically independent signal, and obtain a highly reliable redundant system.

In addition, since each ring-shaped stator for forming a redundant system is independently coupled by the insulating resin 10, unnecessary magnetic flux that passes between the two systems through the iron core directly between each ring-shaped stator 1, 1A is generated. It is possible to reduce and obtain a stable signal output.
Further, when the insulating resin 10 is formed by injection molding by insert molding and the respective ring-shaped stators 1 and 1A are joined to form the redundant resolver stator structure 20, the redundant resolver stator structure 20 is extremely manufactured. It becomes easy.
In the above-described configuration, the double redundant system has been described. However, a redundant system having more than double is also possible.

It is a block diagram which shows the manufacturing process and structure of a redundant resolver stator structure by this invention. It is sectional drawing which shows the conventional redundant resolver stator structure. FIG. 3 is a plan view of FIG. 2. It is a block diagram which shows typically the protrusion magnetic pole of FIG.

DESCRIPTION OF SYMBOLS 1 1st ring-shaped stator 1A 2nd ring-shaped stator 2 1st protrusion magnetic pole 2A 2nd protrusion magnetic pole 3 1st insulation member 3A 2nd insulation member 4 1st stator winding 4A 2nd stator winding 4a Excitation winding 4b Output winding 10 Insulating resin 20 Redundant resolver stator structure

Claims (1)

A first annular stator (1) having a plurality of first protruding magnetic poles (2) at a predetermined angle; a second annular stator (1A) having a plurality of second protruding magnetic poles (2A) at a predetermined angle; A first stator winding (4) wound around a first projecting magnetic pole (2) through a first insulating member (3) and comprising an excitation winding (4a) and an output winding (4b); A second stator winding (4A) comprising an exciting winding (4a) and an output winding (4b) wound around the two projecting magnetic poles (2A) via the second insulating member (3A);
The first and second annular stators (1, 1A) are superposed in the axial direction, and the first and second annular stators (1, 1A) and the first and second stator windings (4, 4A). In a redundant resolver stator structure characterized by forming at least a double redundant system,
The first and second stator windings (4, 4A) have been wound around the outer circumferences of the first and second insulating members (3, 3A) of the first and second projecting magnetic poles (2, 3). before SL first state, the second annular stator (1, 1A) are formed by insert resin molding by an injection molding machine wherein the stator winding insulation resin not to cover the (4,4A) (10) There the first, with attached together form along the more the axial direction to connect the second insulating member (3, 3A), the thickness along the axial direction of the insulating resin (10) The redundant resolver stator structure is characterized in that the stator windings (4, 4A) are dimensioned so as not to contact each other.

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