JP2003302255A - Brushless resolver and method of forming the resolver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brushless resolver allowing a cost to be reduced and capable of providing any double shaft angle involving a double shaft angle 1. <P>SOLUTION: This brushless resolver 10 comprises an exciting signal transmission means for transmitting, in non-contact state, resolver exciting signals from a stator 3 to a rotor 4 and a resolver part 7 for modulating the resolver exciting signals according to a detected rotating angle. The resolver part 7 is used also as the exciting signal transmission means. The resolver part 7 comprises a set of a rotor 4 having a rotor core 43 having a slot and a rotor winding 44 wound thereon and a stator 3 having a stator core 33 having a slot and a stator winding 34 wound thereon. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brushless resolver, and more particularly to a brushless resolver which can reduce the cost and can obtain an arbitrary shaft angle multiplier by a novel structure in which a transformer is not provided.

[0002]

2. Description of the Related Art In a resolver, which is one of rotational position detectors, when an exciting winding is excited by an AC voltage, the phase or amplitude of the AC output voltage induced in the output winding changes depending on the rotation angle. This is utilized to detect the rotation angle of the rotating device. The operating principle is the same as that of the transformer, except that the iron core of the transformer is divided into a rotor and a stator. Resolvers can be used in environments such as high temperatures and high vibrations, are less prone to failure, and are resistant to noise, and are therefore widely used as detectors for devices that require high reliability.

Among resolvers, a brushless resolver generally uses a rotary transformer as a means for transmitting a signal to a rotor, instead of the conventional brush and slip ring.

FIG. 7 is a half sectional view showing the structure of a conventional brushless resolver. In the figure, a conventional brushless resolver includes a stator including a stator resolver iron core 131 and a stator resolver winding 132, and a rotor resolver iron core 141 and a rotor resolver winding 1.
A detection unit (hereinafter,
Also referred to as the "resolver section". ) And the stator transformer 15
1 and a stator transformer winding 152, and a rotor transformer including a rotor transformer 161 and a rotor transformer winding 162 (hereinafter, also referred to as “transformer unit”). Composed.

That is, the brushless resolver mainly has a resolver section for obtaining a voltage according to the rotation angle and a transformer section for the purpose of transmitting a signal to the rotor. A cutting transformer with a cylindrical shape is used for the transformer part of the resolver,
On the other hand, a laminated iron core that has been laminated is used in the resolver portion, and when the brushless resolver is manufactured, the parts used in each portion are different, and the manufacturing cost and the number of steps are correspondingly increased.

In terms of function, the brushless resolver constitutes a magnetic circuit by a stator transformer, a rotor transformer, a rotor iron core, and a stator iron core, and the transformer portion including the stator transformer and the rotor transformer is
It has only the function of transmitting the resolver excitation signal from the stator side to the rotor side in a non-contact manner, while the rotor core and the resolver part consisting of the resolver core have the original function of the resolver, which is the modulation of the resolver excitation signal according to the rotation angle. It was Therefore, in the conventional brushless resolver, the transformer portion does not contribute to the original function of the resolver.

[0007]

As described above, the conventional brushless resolver has a problem that it is difficult to reduce the manufacturing cost because the parts used in the transformer section and the resolver section are different. Also, although the transformer part contributes to making the resolver brushless, it does not contribute to the modulation of the resolver excitation signal, which is the original function of the resolver, and rather the magnetic flux generated in the transformer part tends to interfere with the resolver part. Therefore, in terms of the rotation angle detection performance of the resolver, it may be one of the causes of performance hindrance.

On the other hand, from the viewpoint of expanding the field of application of the resolver, further improvement of the rotation angle detection accuracy in the brushless resolver, increase in the degree of freedom in selecting the shaft angle multiplication, and increase in the degree of freedom in the configuration of the resolver have been demanded.

In the case of the VR resolver, the rotor is composed only of the iron core, and although there is an effect of reducing the number of parts and the number of parts, in the expansion of the degree of freedom in selecting the shaft angle multiplier, one revolution is performed by one revolution of the resolver.
It has been impossible to realize a resolver with a shaft angle multiplier of 1 having a feature that an angle signal for rotation can be obtained by a VR resolver, because the rotor shape has a concentric shape with respect to the rotation center.

Based on the above, the problem to be solved by the present invention is to eliminate the above-mentioned problems of the prior art and to achieve cost reduction, and to obtain an arbitrary shaft angle doubler including the shaft angle doubler 1. It is to provide a resolver. That is, in terms of manufacturing, cost reduction is achieved by reducing the number of parts and the number of parts, and an arbitrary shaft angle multiplier including the shaft angle multiplier 1 can be obtained, thereby increasing the degree of freedom in selecting the shaft angle multiplier and increasing the detection accuracy. To provide a new brushless resolver that can increase the degree of freedom in the configuration of any resolver according to the application and can reduce the interference between the magnetic circuit on the excitation side and the magnetic circuit on the output side in terms of performance. Is.

[0011]

As a result of intensive studies on the above-mentioned problems, the inventor of the present application has adopted a novel structure in which a transformer portion, which is conventionally provided for non-contact transmission of a resolver excitation signal, is not provided. The inventors have found that the problems described above can be solved by studying the winding configuration and the like in the rotor, and have reached the present invention. That is, the invention claimed in the present application as means for solving the above problems is as follows.

(1) Excitation signal transmitting means for transmitting the resolver excitation signal from the stator side to the rotor side in a non-contact manner, and a resolver section for modulating the resolver excitation signal according to the rotation angle to be detected. A brushless resolver comprising: a resolver section that also serves as the excitation signal transmitting means.

(2) The resolver section is a rotor made of a rotor core provided with windings (also referred to as "rotor windings") having slots, and windings having slots ("stator windings"). (Also referred to as a). A brushless resolver according to (1), characterized in that the brushless resolver is composed of a pair of stators each having a stator core.

(3) The stator winding is a winding for transmitting a resolver excitation signal to the rotor by being excited by an AC voltage, and a stator exciting winding portion which is to be detected in the rotor and is to be detected. A stator output winding portion that is a winding that outputs a corresponding signal, the stator excitation winding portion and the stator output winding portion are provided on the same one stator iron core, and the rotor winding is A rotor excitation winding that is a winding for receiving a resolver excitation signal transmission from the stator excitation winding portion, and a rotor output winding that is a winding for generating an output signal in the stator output winding portion The brushless resolver according to (2), characterized in that the rotor excitation winding and the rotor output winding are provided on the same rotor core.

(4) The provision of at least one of the rotor shaft and the case is omitted.
The brushless resolver of (2) or (3).

(5) The stator depends on a stator excitation winding portion which is a winding for transmitting a resolver excitation signal to the rotor by being excited by an AC voltage, and a rotation angle to be detected which appears on the rotor. And a stator output winding portion that is a winding from which a signal is output, and at least one of the stator excitation winding portion and the stator output winding portion has a sinusoidally distributed winding and The rotor is provided with two-phase windings that are 90 ° out of phase with each other (hereinafter referred to as “90 ° out of phase with each other” or “out of phase with each other”). Is a rotor excitation winding that is a winding for receiving a resolver excitation signal transmission from the stator excitation winding portion, and a rotor output winding that is a winding for generating an output signal in the stator output winding portion. Rotor winding part consisting of The brushless resolver according to (3) or (4), characterized in that the rotor excitation winding and the rotor output winding are windings that are out of phase with each other by 90 °.

(6) Each of the stator excitation winding portion and the stator output winding portion is provided with two-phase windings that are 90 ° out of phase with each other, and a phase to which an excitation voltage is applied and an output signal. It is characterized in that it is possible to select three types of signal processing methods of two-phase excitation two-phase output, one-phase excitation two-phase output, or two-phase excitation one-phase output by selecting the phase from which 5) Brushless resolver.

(7) The number of slots of the iron core in at least one of the stator iron core and the rotor iron core, the number of pole pairs in the excitation function block including the stator excitation winding portion and the rotor excitation winding, and the stator output. In the combination of the number of pole pairs in the output functional block including the winding portion and the rotor output winding, at least one of them is arbitrarily set, so that the number of rotations is N times the rotation of the resolver. Of the brushless resolver according to any one of (3) to (6) (where N is an integer of 1 or more and is an arbitrary number).

(8) The relation between the number m of pole pairs in the excitation function block and the number n of pole pairs in the output function block is mn = 1, and the rotor excitation winding and rotor output winding in the rotor are Since the phase rotations are reversed in the wiring of the line, the angle signal for one rotation is obtained by one rotation of the resolver, and the resolver having the shaft angle multiplier of 1 is configured. (5) to ( 7) Any of the brushless resolvers of (7) (where m and n are both positive integers and are arbitrary numbers).

(9) The relation between the number m of pole pairs in the excitation function block and the number n of pole pairs in the output function block is nm = 1, and the rotor excitation winding in the rotor and the rotor output winding are Since the phase rotation is reversed in the wiring of the line, the resolver is configured such that the rotation direction is reversed by one rotation of the resolver and the angle signal for the rotation amount of one rotation is obtained. ) To (7) (where m and n are both positive integers and are arbitrary numbers).

(10) In order to prevent magnetic flux interference between the resolver excitation signal in the excitation function block and the output signal in the output function block, the number of pole pairs m in the excitation function block and the number of poles in the output function block are Characterized in that the number of pole pairs n is different,
The brushless resolver according to any one of (5) to (7) (where m and n are both positive integers and are arbitrary numbers).

(11) A method of constructing the brushless resolver according to any one of (5) to (7), wherein the number of slots of the iron core in at least one of the stator iron core and the rotor iron core, and the excitation function block By arbitrarily setting at least one of these in the combination of the number of pole pairs and the number of pole pairs in the output functional block, an angle signal having a rotation speed N times that of one rotation of the resolver is obtained. And a brushless resolver (wherein N is an integer of 1 or more and is an arbitrary number).

(12) A method for constructing the brushless resolver according to any one of (5) to (7), wherein the number of pole pairs m in the excitation function block and the number of pole pairs n in the output function block are different numbers. To prevent interference between the excitation signal and the output signal,
A method of configuring a brushless resolver (where m and n are both positive integers and are arbitrary numbers).

(13) In the brushless resolver construction method according to (12), the relationship between the number of pole pairs m in the excitation function block and the number of pole pairs n in the output function block is set so that the difference becomes 1. In order to obtain an angle signal for one rotation by one rotation of the resolver by forming a pair and to obtain a resolver having an axis multiplication angle of 1 with the same rotation direction, the relation between m and n is m−n = 1. , The poles are arranged so that the rotation direction is opposite, and a resolver that generates an angle signal with the rotation amount of one rotation is obtained,
A configuration of a brushless resolver in which the poles are arranged so that the relationship between m and n is nm = 1, and the phase rotation is reversed in the wiring of the rotor excitation winding and the rotor output winding in the rotor. Method (however, both m and n are positive integers and are arbitrary numbers).

(14) A brushless resolver rotor comprising an iron core having slots provided with windings of two phases, and the windings of two phases are mutually 90 ° for modulating the resolver signal. A rotor for a brushless resolver, characterized in that the rotor is constituted by windings whose phases are shifted.

(15) As a resolver section, a stator excitation winding section composed of two-phase windings, and a stator provided with windings constituting the stator output winding section, and rotor excitation winding and rotor output winding In a brushless resolver having a rotor having a total of two-phase windings, when the number of pole pairs in the excitation function block composed of the stator excitation winding portion and the rotor excitation winding is m, (A) the stator When the exciting voltage is applied to both phases in the exciting winding part, [Equation] E ₃ = K ₁ Esin (ωt + mθ), E ₄ = K ₁ is applied to the rotor winding.
Two signals E ₃ and E ₄ represented by Ecos (ωt + mθ) are obtained, and (B) when an exciting voltage is applied to only one phase in the stator exciting winding portion, it is applied to the winding of the rotor. Are [Equation] E ₃ = K ₁ E ₁ cos (mθ), E ₄ = K ₁ E ₁ s
The winding structure of the brushless resolver is characterized in that two signals E ₃ and E ₄ represented by in (mθ) are obtained (however,
K ₁ is a transformation ratio, E is an input signal, E ₁ is an excitation signal, ω is an angular velocity, t is time, and θ is a rotation angle. ).

(16) The excitation signals E ₁ , E ₂ and the output signals E ₅ , E ₆ in the brushless resolver are (I)
When the signal processing method is two-phase excitation two-phase output, [Formula] E ₁ = Esinωt −−−− <1> E ₂ = Ecosωt −−− <2> E ₅ = KEsin {ωt + (m + n) θ} −−−− <5> E ₆ = KEcos {ωt + (m + n) θ} −−−− <6>, provided that the phase rotation is changed by changing the wiring between the input and output coils in the rotor. Table the output signal, [equation] _{E 5 = KEsin {ωt + (} m-n) θ} ---- <7> E 6 = KEcos {ωt + (m-n) θ} ---- <8> When the (II) signal processing method is the one-phase excitation two-phase output, [Equation] E ₁ = Esinωt −−−− <1> E ₅ = KE ₁ cos {(m + n) θ} − --- _<11> E 6 = is represented by _{KE 1 sin {(m + n} ) θ} ---- <12>, but by changing the wiring between the input and output coils in the rotor The output signal of changing the phase rotation, [Equation] _{E 5 = KE 1 cos {(} m-n) θ} ---- <13> E 6 = KE 1 sin {(m-n) θ} - --- <14>, and when (III) the signal processing method is 2-phase excitation 1-phase output, [Equation] E ₁ = Esinωt −−− <1> E ₂ = Ecosωt− −−− <2> E ₅ = KEsin {ωt + (m + n) θ} −−−− <17>, provided that the phase rotation is changed by changing the wiring between the input and output coils in the rotor. The output signal is represented by [Equation] E ₅ = KEsin {ωt + (m−n) θ} −−− <18>, and the winding of the brushless resolver of (15) is characterized in that Structure (where K is the transformation ratio,
E is the input signal, ω is the angular velocity, t is the time, θ is the rotation angle, and m
Is the number of pole pairs in the excitation function block, and n is the number of pole pairs in the output function block. ).

In other words, in the present invention, in order to solve the problem of cost reduction, the transformer portion which has been conventionally provided for non-contact transmission of the resolver excitation signal is not provided, and any shaft multiplication angle including the shaft multiplication angle 1 is set. In order to obtain the above, a new winding configuration and the like in the stator and the rotor are adopted, and in order to reduce the interference between the magnetic circuit on the excitation side and the magnetic circuit on the output side, the winding configuration and the like in the stator and the rotor are changed. This is a means of constructing.

That is, the rotating transformer is not used in the brushless resolver, and the resolver is constituted by a set of a rotor core and a stator core having slots, so that the cost is reduced. In addition, each core is provided with two-phase windings that are 90 ° out of phase with each other, and the combination of the rotation angle of the excitation winding and the output winding and the combination of the number of slots in the rotor core and the stator core are changed. An arbitrary axis double angle including double angle 1 is obtained.
With such a configuration, since the shaft angle multiplier is determined by the number of slots and the winding structure, the rotor core shape is not limited by the shaft angle multiplier, and the rotor core is formed in a disadvantageous shape such as a flat core that cannot be achieved in the resolver structure. A resolver having a shaft angle multiplier of 1 can be configured without the configuration.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings. It should be noted that the same components having the same function will be described with the same reference numerals including FIG. 7 according to the related art described above.

[0031]

[Structure] FIG. 1 is a half sectional view showing the structure of a brushless resolver of the present invention. In the figure, a brushless resolver 10 of the present invention modulates a resolver excitation signal according to a rotation angle to be detected and an excitation signal transmission means for transmitting a resolver excitation signal from the stator 3 side to the rotor 4 side in a non-contact manner. And a resolver section 7 for
Mainly serves as the excitation signal transmission means. The resolver portion 7 has a slot and a rotor 4 including a rotor core 43 having a winding (hereinafter also referred to as “rotor winding”) 44, and a slot and a winding (hereinafter referred to as “rotor winding”). , Also called "stator winding".)
A stator 3 comprising a stator iron core 33 provided with 34,
Can be made up of a set.

That is, the brushless resolver of the present invention is
It does not include a transformer section for non-contact transmission of the resolver excitation signal, and is mainly composed of only the resolver section 7 for modulating the resolver excitation signal according to the rotation angle.

In the figure, the stator winding 34 is a winding for transmitting a resolver excitation signal to the rotor 4 by being excited by an AC voltage.
1 (not shown; see FIG. 2) and a stator output winding portion 342 (not shown; see FIG. 2) that is a winding that outputs a signal corresponding to the rotation to be detected manifested in the rotor 4. ) And the stator excitation winding portion 341 and the stator output winding portion 342 can be provided on the same one stator iron core 33. On the other hand, the rotor winding 44 is a winding for receiving the resolver excitation signal transmission from the stator excitation winding portion 341.
41 (not shown; see FIG. 2) and a rotor output winding 442 (not shown; see FIG. 2) which is a winding for generating an output signal in the stator output winding section 342. The rotor winding portion 44 is configured, and the rotor excitation winding 4
41 and the rotor output winding 442 may be provided on the same rotor iron core 43. Both the stator core 33 and the rotor core 43 can be manufactured by press working.

In the figure, the structure of the brushless resolver of the present invention has a stator 3 composed of a stator core 33 and a stator winding 34, and a rotor 4 composed of a rotor core 43 and a rotor winding 44, The stator 3 and the rotor 4 constitute a resolver unit 7 for modulating the resolver excitation signal according to the rotation angle to be detected, and further the rotor shaft 1 on which the rotor 4 is provided, the stator winding. A basic structure is provided with the lead wire 8 connected to the wire 34, and the case 2 that houses the stator 3 and the rotor 4.

However, in the present invention, the rotor shaft 1,
Alternatively, a configuration may be adopted in which at least one of the cases 2 is not provided. That is, as long as the brushless resolver of the present invention has the above-described resolver configuration, the rotor shaft 1 is not provided, or the resolver portion is not housed by the case 2, or the rotor shaft 1 is also the case 2. It can be configured without both.

[0036]

In FIG. 1, since the brushless resolver of the present invention is configured as described above, non-contact transmission of the resolver excitation signal from the stator 3 side to the rotor 4 side is performed by the resolver section 7 instead of the rotary transformer. The resolver unit 7 also modulates the resolver excitation signal according to the rotation angle to be detected. The resolver portion 7 is a set of a rotor 4 including a rotor core 43 having a slotted stator winding 44 and a stator 3 including a slotted stator core 33 having a rotor winding 34. Since only the resolver can be configured, the resolver configuration can be simplified and the manufacturing cost can be reduced.

In the figure, in the stator winding 34, a stator excitation winding portion 341 (not shown; see FIG. 2) constituting the stator winding 34 is excited by an AC voltage, and a resolver excitation signal is transmitted to the rotor 4. It In addition, a signal corresponding to the rotation angle to be detected, which is manifested in the rotor 4, is also output to the stator output winding unit 3 which also constitutes the stator winding 34.
42 (not shown; see FIG. 2).

That is, an AC voltage is applied to the stator excitation winding portion 341 (not shown; see FIG. 2), and the magnetic flux generated thereby causes the magnetic flux to form a magnetic circuit, which will be described later. (See FIG. 2), a voltage is excited to generate a current, and a magnetic flux output in a rotor output winding 442 (not shown; see FIG. 2) which will be described later and constitutes a circuit with the current is generated. A voltage corresponding to the rotation angle to be detected is output to the stator output winding 341 (not shown; see FIG. 2) forming a magnetic circuit, and an electric signal is generated.

The stator excitation winding portion 341 and the stator output winding portion 342 are the same stator iron core 33.
Since it can be provided above, the number of parts can be minimized in the manufacturing process, and the manufacturing cost can be reduced.

On the other hand, in the rotor winding 44, a rotor exciting winding 441 (not shown; see FIG. 2) constituting the rotor winding 44 receives the resolver exciting signal transmitted from the stator exciting winding portion 341. An output signal is generated in the stator output winding section 342 by a rotor output winding 442 (not shown; see FIG. 2) which also constitutes the rotor winding 44.

That is, the stator excitation winding portion 341.
An AC voltage is applied to the rotor exciting winding 441 (not shown; see FIG. 2) that constitutes a magnetic circuit by an AC voltage applied to the rotor exciting winding 441 (not shown; see FIG. 2). A current is generated to generate a magnetic flux, and a magnetic flux output in the rotor output winding 442 (not shown; see FIG. 2) that forms a circuit with the current is generated, and the stator output winding 341 that forms a magnetic circuit with the magnetic flux. (Not shown, see FIG. 2), a voltage corresponding to the rotation angle to be detected is output, and an electric signal is generated.

Since the rotor excitation winding 441 and the rotor output winding 442 can be provided on the same one stator iron core 43, the number of parts can be minimized in the manufacturing process and the manufacturing cost can be reduced. it can.

In the figure, the structure of the brushless resolver of the present invention does not include at least one of the rotor shaft 1 and the case 2, that is, the brushless resolver of the present invention has the above-mentioned resolver structure. It can be configured without the rotor shaft 1 or without housing the resolver portion in the case 2, or without the rotor shaft 1 and the case 2 together, so that it can be used depending on the application. The minimum number of components,
The number of parts can be reduced and the manufacturing cost can be reduced.

In FIG. 1, since the brushless resolver of the present invention does not have a transformer, the problem of the conventional brushless resolver, that is, the interference of the magnetic circuit from the transformer to the resolver, is eliminated, and the resolver performance is improved. Has been stabilized.

[0045]

[Structure] FIG. 2 is a circuit diagram showing a structure of a brushless resolver 10 of the present invention. FIG. 2 (a) is a wiring diagram showing each structure of a stator 3 and a rotor 4, and FIG. 2 (b) is a resolver. It is a wiring diagram divided into blocks for each function of excitation and output. Although FIG. 2 also shows the structure of a resolver for two-phase excitation and two-phase output, which will be described later, here, by appropriately selecting the excitation side and the output side, one-phase excitation two-phase output, and two-phase output
A basic configuration of the brushless resolver of the present invention, which can also select a signal processing method of phase excitation one-phase output, will be described.

Referring to FIG. 2, in the brushless resolver 10 of the present invention, the stator 3 is a stator excitation winding portion 341 which is a winding for transmitting a resolver excitation signal to the rotor 4 by being excited by an AC voltage. A stator output winding portion 342 that is a winding that outputs a signal corresponding to the rotation to be detected which appears in the rotor 4, and the stator excitation winding portion 341 or the stator output winding portion 34.
At least one of the two is configured as having two-phase windings that are 90 ° out of phase with each other. In the present invention, both the stator excitation winding portion 341 and the stator output winding portion 342 can be configured to include two-phase windings that are out of phase with respect to the rotation angle.

In the figure, on the other hand, the rotor 4 has a rotor excitation winding 441, which is a winding for receiving a resolver excitation signal transmission from the stator excitation winding portion 341, and an output signal to the stator output winding portion 342. A rotor output winding 442, which is a winding for generating a magnetic field, and the rotor excitation winding 441 and the rotor output winding 442 are 90 ° out of phase with each other. It is configured to be a phase winding.

In the figure, the stator excitation winding portion 34
1 and the stator output winding portion 342 are two-phase windings 341, which are out of phase with each other with respect to the rotation angle.
1 and 3412 and 3425 and 3426 are provided, and by selecting a phase to which an excitation voltage is applied and a phase from which an output signal is extracted, 2-phase excitation 2-phase output, 1-phase excitation 2-phase output, or 2-phase excitation It is possible to select one of three types of signal processing methods for one-phase output.

In the figure, the brushless resolver according to the present invention has an exciting function composed of the number of slots of the iron core in at least one of the stator iron core 33 and the rotor iron core 43, the stator exciting winding portion 341 and the rotor exciting winding 441. Number of pole pairs in block BR,
In the combination of the number of pole pairs in the output function block BS including the stator output winding section 342 and the rotor output winding 442, the number of slots, the number of pole pairs in the excitation function block BR, or the pole in the output function block BS. By arbitrarily setting at least one of the logarithms, it is possible to obtain a configuration in which an angle signal having a rotation speed N times that of one rotation of the resolver can be obtained. However, N is an integer (natural number) of 1 or more, and is an arbitrary number.

[0050]

In FIG. 2, since the brushless resolver of the present invention is constructed as described above, in the stator 3, the stator exciting winding portion 341 is excited by an AC voltage, which causes the rotor 4 to resolver. The excitation signal is transmitted, and the stator output winding section 342 outputs a signal corresponding to the rotation to be detected which appears in the rotor 4.

That is, an AC voltage is applied to the stator excitation winding portion 341, and the magnetic flux generated by this causes
A voltage is excited in the rotor excitation winding 441 forming a magnetic circuit to generate a current, and a magnetic flux output from the rotor output winding 442 forming a circuit is generated to form a magnetic circuit with this. In the stator output winding 341,
A voltage corresponding to the rotation angle to be detected is output and an electric signal is generated.

At least one of the stator excitation winding portion 341 and the stator output winding portion 342 is a two-phase winding included in the stator excitation winding portion 341 and the stator output winding portion 342. In the present invention, the stator excitation winding portion 341 and the stator output winding portion 342.
Both of them include two-phase windings (windings 3411 and 3412 for the stator excitation winding portion 341, windings 3425 and 3426 for the stator output winding portion 342).
At 90 °, the phases thereof can be shifted from each other by 90 °, and therefore, two-phase excitation voltages having mutually shifted phases and two-phase output voltages having mutually shifted phases can be obtained.

In the figure, on the other hand, in the rotor 4, the resolver excitation signal transmission from the stator excitation winding portion 341 is received by the rotor excitation winding 441.
An output signal is generated in the stator output winding section 342 by the rotor output winding 442.

That is, an AC voltage is applied to the stator excitation winding portion 341, and the magnetic flux generated by this causes
A voltage is excited in the rotor excitation winding 441 forming a magnetic circuit to generate a current, and a magnetic flux output from the rotor output winding 442 forming a circuit is generated to form a magnetic circuit with this. In the stator output winding 341,
A voltage corresponding to the rotation angle to be detected is output and an electric signal is generated.

The rotor excitation winding 441 and the rotor output winding 442 may have their two-phase windings deviated in phase from each other by 90 °, and thus are out of phase with each other. Two-phase voltage is obtained.

Therefore, by selecting the phase for applying the excitation voltage and the phase for extracting the output signal in the stator 4, the 2-phase excitation 2-phase output, the 1-phase excitation 2-phase output,
Alternatively, three types of signal processing methods of two-phase excitation and one-phase output can be selected.

Further, at least one of the number of slots, the number of pole pairs in the excitation function block BR, or the number of pole pairs in the output function block BS is arbitrarily set, and N times per revolution of the resolver. An angle signal of the number of rotations of is obtained. That is, the number of slots of the stator core 33, the number of slots of the rotor core 43, the configuration of the excitation winding in the excitation function block BR,
Also, the configuration of the output winding in the output function block BS is arbitrarily set, and the required shaft angle multiplier is set. As a result, the degree of freedom in selecting the shaft angle multiplier is increased, and as a result, the degree of freedom in resolver configuration / design is increased. However, N is an integer (natural number) of 1 or more, and is an arbitrary number.

In the figure, the brushless resolver of the present invention also has the number of pole pairs m in the excitation function block BR,
The relation with the number n of pole pairs in the output function block BS is set to m−n = 1, that is, the number m of pole pairs in the excitation function block BR is made one more than the number n of pole pairs in the output function block BS. In addition, the phase rotation in the wiring of the rotor excitation winding 441 and the rotor output winding 442 in the rotor 4 may be reversed, and the resolver may have a shaft angle multiplier of 1 to obtain an angle signal for one rotation by one rotation of the resolver. it can.

Further, the relation between the number m of pole pairs in the excitation function block BR and the number n of pole pairs in the output function block BS is set to nm = 1, that is, the number m of pole pairs in the excitation function block BR. The number of pole pairs n in the output function block BS is reduced by one pair, and the rotor excitation winding 441 and the rotor output winding 44 in the rotor 4 are arranged.
In the wiring of No. 2, the phase rotation can be reversed, and the rotation direction can be reversed by one rotation of the resolver, and the resolver can obtain the angle signal for the rotation amount of one rotation.

In the figure, the brushless resolver of the present invention has a pole in the excitation function block BR in order to prevent magnetic flux interference between the resolver excitation signal in the excitation function block BR and the output signal in the output function block BS. Logarithm m and the output function block BS
The number of pole pairs n in can be different.

[0061]

[Structure] Next, based on the basic structure of the brushless resolver of the present invention described above, an example of the structure of a brushless resolver of each signal processing system will be described. FIG. 3 is a circuit diagram showing a configuration of the brushless resolver of the present invention when a signal processing method of two-phase excitation and two-phase output is adopted, and FIG. 3A is a wiring diagram showing respective configurations of a stator and a rotor. Three
(B) is a connection diagram in which the excitation and output functions of the resolver are divided into blocks for each function. In this configuration, the stator includes a stator excitation winding a (m pole pair) and a stator output winding c.
(N pole pair), the rotor is composed of a rotor excitation winding b (m pole pair) and a rotor output winding d (n pole pair). E ₁ , E ₂
Is an excitation signal, and E ₅ and E ₆ are output signals. The theoretical formula is as in <1> to <6> of Formula 1. In the formula,
K, K ₁ and K ₂ are transformation ratios, ω is angular velocity (rad / s),
t is time (s), and θ is a rotation angle (rad). The same applies below.

[Formula 1] E ₁ = Esinωt −−−− <1> E ₂ = Ecosωt −−−− <2> E ₃ = K ₁ E ₁ cos (mθ) + K ₁ E ₂ sin (mθ) = K ₁ Esin ωtcos (mθ) + K ₁ Ecosωtsin (mθ) = K ₁ Esin (ωt + mθ) −−−− <3> E ₄ = −K ₁ E ₁ sin (mθ) + K ₁ E ₂ cos (mθ) = −K ₁ Esinωt sin (Mθ) + K ₁ Ecosωtcos (mθ) = K ₁ Ecos (ωt + mθ) −−−− <4> E ₅ = K ₂ E ₃ cos (nθ) + K ₂ E ₄ sin (nθ) = K ₁ K ₂ Esin (ωt + mθ) _{) cos (nθ) + K 1} K 2 Ecos (ωt + mθ) sin (nθ) = KEsin (ωt + mθ + nθ) = KEsin {ωt + (m + n) θ} ---- <5> E 6 = -K 2 E 3 sin (nθ) _{+ K 2 E 4 cos (nθ} ) = -K 1 K 2 Esin (ωt + mθ) sin (nθ) + K 1 K 2 E cos (ωt + mθ) cos (nθ) = KEcos (ωt + mθ + nθ) = KEcos {ωt + (m + n) θ} --- <6>

That is, the output signals E ₅ and E ₆ obtained by the two-phase excitation two-phase output signal processing method are signals which are out of phase by (m + n) θ from the excitation signals E ₁ and E ₂ , respectively. .

Here, if the phase rotation is changed by changing the wiring between the input and output coils in the rotor, the theoretical formulas can be expressed by <7> and <8> in the mathematical formula 2.

[0065]

That is, in this case, the output signals E ₅ and E ₅ obtained by the two-phase excitation two-phase output signal processing method are used.
₆ is (m-compared to the excitation signals E ₁ and E ₂ respectively
n) The signal is out of phase by θ.

FIG. 4 is a circuit diagram showing the configuration of the brushless resolver of the present invention when the signal processing system of one-phase excitation and two-phase output is adopted, and FIG. 4 (a) is a wiring diagram showing each configuration of the stator and the rotor. FIG. 4 (b) is a connection diagram in which the excitation and output functions of the resolver are divided into blocks according to their respective functions. In this configuration, the stator is the stator excitation winding a.
(M pole pair), stator output winding c (n pole pair), and the rotor is composed of rotor excitation winding b (m pole pair) and rotor output winding d (n pole pair). E ₁ is an excitation signal, and E ₅ , E
₆ is an output signal. The theoretical formula is <11>, <1 of Formula 3
2>.

[Equation 3] E ₁ = Esinωt −−−− <1> E ₃ = K ₁ E ₁ cos (mθ) −−− <9> E ₄ = K ₁ E ₁ sin (mθ) −−− − <10> E ₅ = K ₂ E ₃ cos (nθ) −K ₂ E ₄ sin (nθ) = K ₁ K ₂ E ₁ {cos (mθ) cos (nθ) −sin (mθ) sin (nθ)} = KE ₁ cos {(m + n) θ} ---- <11> E ₆ = K ₂ E ₃ sin (nθ) + K ₂ E ₄ cos (nθ) = K ₁ K ₂ E ₁ {cos (mθ) sin ( nθ) + sin (mθ) cos (nθ)} = KE ₁ sin {(m + n) θ} ---- <12>

That is, the output signals E ₅ and E ₆ obtained by the signal processing method of the one-phase excitation two-phase output have the axis multiplication angle (m + n) times that of the excitation signal E ₁ , that is, 1
By rotation, an angle signal for (m + n) rotations is obtained.

Here, if the phase rotation is changed by changing the wiring between the input and output coils in the rotor, the theoretical formulas can be expressed by <13> and <14> in the mathematical formula 4.

[0071]

That is, in this case, the output signals E ₅ and E ₅ obtained by the signal processing method of the one-phase excitation and the two-phase output are used.
_6, the excitation signal E ₁ as compared to the shaft angle multiplier is (m-n) becomes doubled, that is, one revolution (m-n) angle signal rotations obtained.

FIG. 5 is a circuit diagram showing the configuration of the brushless resolver of the present invention when the signal processing method of two-phase excitation and one-phase output is adopted, and FIG. 5 (a) is a wiring diagram showing each configuration of the stator and the rotor. FIG. 5B is a connection diagram in which excitation and output as a resolver are divided into blocks according to their respective functions. In this configuration, the stator is the stator excitation winding a.
(M pole pair), stator output winding c (n pole pair), and the rotor is composed of rotor excitation winding b (m pole pair) and rotor output winding d (n pole pair). E ₁ and E ₂ are excitation signals, and
₅ is an output signal. The theoretical formula is as in <17> of Formula 5.

[Equation 5] E ₁ = Esinωt −−−− <1> E ₂ = Ecosωt −−−− <2> E ₃ = K ₁ E ₁ cos (mθ) + K ₁ E ₂ sin (mθ) = K ₁ Esin ωtcos (mθ) + K ₁ Ecosωtsin (mθ) = K ₁ Esin (ωt + mθ) −−−− <15> E ₄ = −K ₁ E ₁ sin (mθ) + K ₁ E ₂ cos (mθ) = −K ₁ Esinωt sin (Mθ) + K ₁ Ecosωtcos (mθ) = K ₁ Ecos (ωt + mθ) −−−− <16> E ₅ = K ₂ E ₃ cos (nθ) + K ₂ E ₄ sin (nθ) = K ₁ K ₂ Esin (ωt + mθ) ) Cos (nθ) + K ₁ K ₂ Ecos (ωt + mθ) sin (nθ) = KEsin (ωt + mθ + nθ) = KEsin {ωt + (m + n) θ} -------- <17>

That is, the output signal E ₅ obtained by the signal processing method of 2-phase excitation 1-phase output is the excitation signals E ₁ , E ₂
The signal is out of phase by (m + n) θ compared with.

Here, if the phase rotation is changed by changing the wiring between the input and output coils in the rotor, the theoretical formula can be expressed by <18> in the mathematical formula 6.

[Equation 6] E ₅ = K ₂ E ₃ cos (nθ) −K ₂ E ₄ sin (nθ) = KE sin {ωt + (m−n) θ} −−− <18>

That is, in this case, the output signal E ₅ obtained by the signal processing method of 2-phase excitation 1-phase output is a signal whose phase is shifted by (m−n) θ from the excitation signals E ₁ and E _2. is there.

As described above, in the brushless resolver of the present invention, 2-phase excitation 2-phase output, 1-phase excitation 2-phase output, 2
It is possible to configure a resolver for each signal processing method of phase excitation 1-phase output, and to configure the phase shift arbitrarily, and select the combination of the number of pole pairs m and n on the excitation side and the output side to achieve rotation. N times angle θ (axis angle N)
Angle signals can be obtained. Further, the required N-fold signal can be obtained by the number of slots of the iron core and the combination of m and n.

In the brushless resolver of the present invention, the number of pole pairs m in the exciting function block and the number of pole pairs n in the output function block are different from each other, so that the same iron core is used in the stator and the rotor, respectively. It is possible to prevent interference between the excitation signal and the output signal. Here, both m and n are positive integers and are arbitrary numbers. The same applies to the following.

In the brushless resolver of the present invention, the resolver is constructed by forming a pole so that the difference between the number m of pole pairs in the excitation function block and the number n of pole pairs in the output function block is 1. It is possible to configure so that an angle signal for one rotation can be obtained by one rotation. In order to obtain a resolver with the same axis multiplication angle of 1 in the rotation direction, by configuring the poles so that the relationship between the number of pole pairs m and n in each block is mn = 1,
This can be configured. On the other hand, in order to obtain a resolver which has an opposite rotation direction and generates an angle signal corresponding to one rotation, the poles are arranged so that the relationship between m and n is nm = 1, and This can be configured by making the phase rotations in opposite phases in the wiring of the rotor excitation winding and the rotor output winding in the rotor.

The rotor used in the brushless resolver of the present invention is composed of an iron core having slots provided with two-phase windings as described above, and the two-phase windings are for modulating the resolver signal. Are 90 ° out of phase with each other, which allows various signal modulations in the brushless resolver of the present invention described above.

That is, the brushless resolver of the present invention is
As a resolver section, a stator excitation winding section consisting of two-phase windings, a stator provided with windings constituting the stator output winding section, and a rotor excitation winding and a rotor output winding for a total of two phases. When the number of pole pairs in the excitation function block composed of the stator excitation winding and the rotor excitation winding is m, the rotor generates the following signals. .

(A) When the exciting voltage is applied to both phases in the stator exciting winding portion, in the winding of the rotor, [Equation] E ₃ = K ₁ Esin (ωt + mθ), E ₄ = K ₁
Two signals E ₃ and E ₄ represented by Ecos (ωt + mθ) are obtained. (B) When an exciting voltage is applied to only one phase in the stator exciting winding portion, in the rotor winding, [Equation] E ₃ = K ₁ E ₁ cos (mθ), E ₄ = K ₁ E ₁ s
Two signals E ₃ and E ₄ represented by in (mθ) are obtained. Based on these signals, the output signal E in the stator output winding section
₅ , E ₆ are determined. As described above, the meaning of each character is K ₁ is a transformation ratio, E and E ₁ are excitation signals, ω is angular velocity, t is time, and θ is rotation angle.

[0085]

EXAMPLE The configuration of the input / output windings in the brushless resolver of the present invention is shown below, taking the case of one-phase excitation and two-phase output (see FIG. 4) as an example. By changing the combination of m and n, an angle signal that is N (axis multiplication angle N) times the rotation angle θ can be obtained. At this time, the N-fold signal is not limited to the example, and the required N-fold signal can be obtained by combining the number of slots of the iron core and m and n. In the following equations, θ is the rotation angle, m is the number of excitation side pole pairs, and n is the number of output side pole pairs.

1. The output signals when the number of pole pairs on the excitation side and the number of poles on the output side are m = 1 and n = 2 are as shown in Expression 7. The shaft angle multiplier is 3, and a brushless resolver is obtained which can obtain an angle signal for three rotations in one rotation.

[Equation 7] When m = 1 and n = 2, E ₁ = Esinωt E ₅ = KE ₁ cos {(m + n) θ} = KE ₁ cos {(1 + 2) from the equations <11> and <12>. θ} = KE ₁ cos 3θ E ₆ = KE ₁ sin {(m + n) θ} = KE ₁ sin {(1 + 2) θ} = KE ₁ sin3θ

2. The output signals when the number of pole pairs on the excitation side and the output side are m = 3 and n = 1, respectively, are as shown in Equation 8. The shaft angle multiplier is 4, and a brushless resolver that can obtain an angle signal for four rotations in one rotation is configured.

[Equation 8] When m = 3 and n = 1, from Eqs. <11> and <12>, E ₁ = E sinωt E ₅ = KE ₁ cos {(m + n) θ} = KE ₁ cos {(3 + 1) θ} = KE ₁ cos 4θ E ₆ = KE ₁ sin {(m + n) θ} = KE ₁ sin {(3 + 1) θ} = KE ₁ sin4θ

3. When the number of pole pairs on the excitation side and the output side are m = 8 and n = 7, respectively, and the phase rotation is opposite, the output signal is as shown in Expression 9. The shaft angle is 1,
A brushless resolver that can obtain an angle signal for one rotation by one rotation is configured.

[Equation 9] When m = 8, n = 7, and the phase rotation is opposite, E ₁ = Esinωt E ₅ = KE ₁ cos {(m−n) θ} = from equations <13> and <14> _{KE 1 cos {(8-7) θ} } = KE 1 cosθ E 6 = KE 1 sin {(m-n) θ} = KE 1 sin {(8-7) θ} = KE 1 sinθ

4. When the number of pole pairs on the excitation side and the output side are m = 1 and n = 2, respectively, and the phase rotation is opposite, the output signal is as shown in Expression 10. Phase rotation is opposite, 1
A brushless resolver that can obtain an angle signal for one rotation by rotation is configured.

[Equation 10] When m = 1, n = 2, and the phase rotation is opposite, E ₁ = Esinωt E ₅ = KE ₁ cos {(m−n) θ} = from the equations <13> and <14> _{KE 1 cos {(1-2) θ} } = KE 1 cosθ E 6 = KE 1 sin {(m-n) θ} = KE 1 sin {(1-2) θ} = -KE 1 sinθ

FIG. 6 shows the third embodiment described above. FIG. 9 is a graph showing the relationship between the shaft angle and the output signal level measured by the brushless resolver having the above configuration (m = 8, n = 7, in the case of reverse phase rotation). The shaft angle multiplier is 1, and it is shown that the brushless resolver is configured to obtain the angle signal for one rotation by one rotation. In the figure, the unit of the axis angle represented by the horizontal axis is not rad but degrees (degrees).

[0095]

According to the present invention, since it is configured as described above, it is possible to reduce the manufacturing cost of the brushless resolver, and it is possible to obtain an arbitrary shaft angle multiplier including the shaft angle multiplier 1. That is, in terms of manufacturing, it is possible to reduce the number of parts or the number of parts and the number of manufacturing steps with a simple configuration that does not require a rotary transformer, and it is possible to reduce manufacturing cost.

Further, any axis multiplication angle including the axis multiplication angle 1 can be obtained without taking a disadvantageous structure such as a flat core in the iron core shape, and an arbitrary resolver suitable for the application in terms of detection accuracy, detection resolution and the like. Can be configured. That is,
The degree of freedom in selecting the shaft angle multiplier is increased, and in combination with the variety of possible signal processing methods, the degree of freedom in the resolver configuration can be increased.

Further, in terms of performance, since the transformer is not required, the problem of interference between the magnetic circuit on the excitation side and the magnetic circuit on the output side can be solved.

[Brief description of drawings]

FIG. 1 is a half sectional view showing a structure of a brushless resolver of the present invention.

2 is a circuit diagram showing a configuration of a brushless resolver 10 of the present invention, FIG. 2 (a) is a connection diagram showing each configuration of a stator 3 and a rotor 4, and FIG. 2 (b) is an excitation and output as a resolver. It is a wiring diagram divided into blocks according to each function.

FIG. 3 is a circuit diagram showing a configuration of a brushless resolver of the present invention when a signal processing method of two-phase excitation and two-phase output is adopted, and FIG. 3A is a wiring diagram showing respective configurations of a stator and a rotor. 3 (b) is a connection diagram in which the excitation and output functions of the resolver are divided into blocks according to their respective functions.

FIG. 4 is a circuit diagram showing a configuration of the brushless resolver of the present invention when a signal processing method of one-phase excitation and two-phase output is adopted, and FIG. 4 (a) is a wiring diagram showing respective configurations of a stator and a rotor. FIG. 4B is a connection diagram in which excitation and output functions as a resolver are divided into blocks according to respective functions.

FIG. 5 is a circuit diagram showing a configuration of a brushless resolver of the present invention when a signal processing method of two-phase excitation and one-phase output is adopted, and FIG. 5 (a) is a wiring diagram showing respective configurations of a stator and a rotor. 5 (b) is a connection diagram in which the excitation and output functions of the resolver are divided into blocks for each function.

FIG. 6 Example 3. FIG. 9 is a graph showing the relationship between the shaft angle and the output signal level measured by the brushless resolver having the above configuration (m = 8, n = 7, in the case of reverse phase rotation).

FIG. 7 is a half sectional view of a conventional brushless resolver.

[Explanation of symbols]

1 ... Shaft, 2 ... Case, 3 ... Stator, 4 ... Rotor, 8 ... Lead wire, 10 ... Brushless resolver,
33 ... Stator core, 34 ... Stator winding, 43 ...
Rotor core, 44 ... Rotor winding, 341 ... Stator excitation winding section, 342 ... Stator output winding section, 441
... Rotor excitation winding, 442 ... Rotor output winding, 34
11, 3412, 3425, 3426 ... Stator winding,
BR ... excitation function block, BS ... output function blocks, _{E 1, E} 2 _... excitation voltage, _{E 5, E} 6 _... Output Voltage

Claims (16)

[Claims] 1. An excitation signal transmitting means for transmitting a resolver excitation signal from a stator side to a rotor side in a non-contact manner, and a resolver section for modulating the resolver excitation signal according to a rotation angle to be detected. A brushless resolver provided, wherein the resolver section also serves as the excitation signal transmitting means. 2. A rotor comprising a rotor core in which the resolver section has slots and windings (also referred to as “rotor windings”), and slots having windings (also referred to as “stator windings”). A stator made of a stator iron core, which is provided with a stator.
The brushless resolver according to claim 1. 3. The stator winding is a winding for transmitting a resolver excitation signal to the rotor by being excited by an AC voltage, and a stator exciting winding portion according to a rotation to be detected which appears in the rotor. And a stator output winding part that is a winding that outputs a signal, the stator excitation winding part and the stator output winding part are provided on the same one stator iron core, and the rotor winding is From a rotor excitation winding that is a winding for receiving a resolver excitation signal transmission from the stator excitation winding, and a rotor output winding that is a winding for generating an output signal in the stator output winding. 3. The brushless resolver according to claim 2, wherein the rotor excitation winding and the rotor output winding are provided on the same rotor iron core. 4. The brushless resolver according to claim 2, wherein the provision of at least one of the rotor shaft and the case is omitted. 5. The stator excitation winding portion, which is a winding for transmitting a resolver excitation signal to the rotor by being excited by an AC voltage, and a stator excitation winding portion according to a rotation angle to be detected which appears in the rotor. A stator output winding portion that is a winding for outputting a signal, and at least one of the stator excitation winding portion and the stator output winding portion has a sinusoidally distributed winding and The rotor is provided with two-phase windings that are 90 ° out of phase (hereinafter, referred to as “90 ° out of phase” or “out of phase with each other”). A rotor excitation winding that is a winding for receiving a resolver excitation signal transmission from the stator excitation winding portion, and a rotor output winding that is a winding for generating an output signal in the stator output winding portion With a rotor winding part consisting of , Characterized in that the rotor exciting winding and the rotor output coil is shifted windings mutually 90 ° phase, brushless resolver according to claim 3 or 4. 6. The stator excitation winding portion and the stator output winding portion are both 2 degrees out of phase with each other.
By providing a phase winding and selecting a phase to which an excitation voltage is applied and a phase from which an output signal is extracted, two-phase excitation two-phase output, one-phase excitation two-phase output, or two-phase excitation one-phase output can be selected. The brushless resolver according to claim 5, wherein three types of signal processing methods can be selected. 7. The number of slots of the iron core in at least one of the stator iron core and the rotor iron core,
In the combination of the number of pole pairs in the excitation function block including the stator excitation winding portion and the rotor excitation winding, and the number of pole pairs in the output function block including the stator output winding portion and the rotor output winding, 7. An angle signal having N times the number of revolutions per revolution of the resolver can be obtained by arbitrarily setting at least one of them, and the angle signal can be obtained. Brushless resolver (where N is an integer of 1 or more and is an arbitrary number). 8. The number of pole pairs m in the excitation function block
And the number of pole pairs n in the output function block is m−n = 1, and the phase rotation is reversed in the wiring of the rotor excitation winding and the rotor output winding in the rotor. The brushless resolver according to any one of claims 5 to 7, wherein an angle signal for one rotation is obtained by one rotation of the resolver, and a resolver having a shaft angle multiplier of 1 is configured. Are both positive integers and are arbitrary numbers.) 9. The number of pole pairs m in the excitation function block
And the number of pole pairs n in the output function block is nm = 1, and the phase rotations are opposite in the wiring of the rotor excitation winding and the rotor output winding in the rotor. The brushless resolver according to any one of claims 5 to 7, wherein the resolver is configured to obtain an angle signal whose rotation direction is reversed by one rotation of the resolver and whose rotation amount is one rotation. Both m and n are positive integers and are arbitrary numbers.). 10. In order to prevent magnetic flux interference between the resolver excitation signal in the excitation function block and the output signal in the output function block, the number of pole pairs m in the excitation function block and the poles in the output function block are set. The brushless resolver according to any one of claims 5 to 7, wherein the logarithm n is a different number (however, both m and n are positive integers and are arbitrary numbers). 11. A method of constructing the brushless resolver according to claim 5, wherein the number of slots of the iron core in at least one of the stator core and the rotor core, and the pole in the excitation function block. By arbitrarily setting at least one of these in the combination of the logarithm and the pole pair number in the output function block, it is possible to obtain an angle signal with a rotation speed N times that of one rotation of the resolver. A brushless resolver capable of forming the brushless resolver (where N is an integer of 1 or more and is an arbitrary number). 12. A method of constructing the brushless resolver according to claim 5, wherein the number of pole pairs m in the excitation function block and the number of pole pairs n in the output function block are different from each other. , Configured to prevent interference between the excitation signal and the output signal,
A method of configuring a brushless resolver (where m and n are both positive integers and are arbitrary numbers). 13. The method of constructing a brushless resolver according to claim 12, wherein the relationship between the number of pole pairs m in the excitation function block and the number of pole pairs n in the output function block is set to be 1. In order to obtain an angle signal for one rotation by one rotation of the resolver by forming a pole pair and to obtain a resolver having an axis multiplication angle of 1 with the same rotation direction, the relation between m and n is m−n = When a pole is configured to be 1, and a resolver that generates an angle signal whose rotation direction is opposite and whose rotation amount is one rotation is to be obtained, the relation between m and n is expressed as n−m = 1, The brushless resolver is configured such that the poles are configured so that the phase rotation is reversed in the wiring of the rotor excitation winding and the rotor output winding in the rotor (where m and n are both positive). Is an integer and can be any It is a number.) 14. A rotor for a brushless resolver, the rotor comprising an iron core having slots provided with two-phase windings, the two-phase windings being 90 ° in phase with each other for modulation of the resolver signal. A rotor for a brushless resolver, characterized in that the rotor is constituted by windings that are offset from each other. 15. A stator excitation winding portion composed of two-phase windings as a resolver portion, a stator provided with windings constituting a stator output winding portion, and a rotor excitation winding and a rotor output winding. In a brushless resolver having a rotor having a total of two-phase windings, when the number of pole pairs in an excitation function block composed of the stator excitation winding portion and the rotor excitation winding is m, (A) the stator excitation When an exciting voltage is applied to both phases in the winding part, [Equation] E ₃ = K ₁ Esin (ωt + mθ), E ₄ = K ₁ is applied to the rotor winding.
Two signals E ₃ and E ₄ represented by Ecos (ωt + mθ) are obtained, and (B) when an exciting voltage is applied to only one phase in the stator exciting winding portion, it is applied to the rotor winding. Are [Equation] E ₃ = K ₁ E ₁ cos (mθ), E ₄ = K ₁ E ₁ s
The winding structure of the brushless resolver is characterized in that two signals E ₃ and E ₄ represented by in (mθ) are obtained (however,
K ₁ is a transformation ratio, E is an input signal, E ₁ is an excitation signal, ω is an angular velocity, t is time, and θ is a rotation angle. ). 16. When the excitation signals E ₁ , E ₂ and the output signals E ₅ , E ₆ in the brushless resolver are (I) when the signal processing method is 2-phase excitation 2-phase output, [Formula] E ₁ = Esinωt −−−− <1> E ₂ = Ecos ωt −−−− <2> E ₅ = KEsin {ωt + (m + n) θ} −−− <5> E ₆ = KEcos {ωt + (m + n) θ} −−− -It is expressed by <6>, but the output signal when the wiring between the input and output coils in the rotor is changed and the phase rotation is changed is [Equation] E ₅ = KEsin {ωt + (m−n) θ} _{---- <7> E 6 = KEcos} {ωt + (m-n) θ} ---- are those represented by <8>, (II) signal processing when system is one-phase excitation 2-phase output is [mathematical formula] _{E 1 = Esinωt ---- <1>} E 5 = KE 1 cos {(m + n) θ} ---- <11> E 6 = _{E 1 sin {(m + n} ) θ} ---- expressed in <12>, provided that the output signal when changing the wiring between the input and output coils in the rotor, to change the phase rotation is [mathematical formula] E ₅ = KE ₁ cos {(m−n) θ} −−− <13> E ₆ = KE ₁ sin {(m−n) θ} −− <<14>, and (6 III) When the signal processing method is 2-phase excitation 1-phase output, [Equation] E ₁ = Esinωt −−−− <1> E ₂ = Ecosωt −−− <2> E ₅ = KEsin {ωt + (m + n) θ} −−−− <17>, where the output signal when the phase rotation is changed by changing the wiring between the input and output coils in the rotor is [Equation] E ₅ = KEsin {ωt + (m -N) θ} --- <18> is represented by <18>.
Winding structure of the brushless resolver described in (where K is a transformation ratio, E is an input signal, ω is an angular velocity, t is a time, θ is a rotation angle, m is the number of pole pairs in the excitation function block, and n is the output function. The number of pole pairs in the block, and).