JPH0199490A - Three-phase motor driven by integrated circuit - Google Patents

Abstract

PURPOSE:To simplify a constitution by constituting a commutator as a magnet for detecting position and constituting brushes as a magnetoelectric conversion element and an IC. CONSTITUTION:A silicon steel disc 7 as a magnetic path is fixed on a substrate 2 whereon a sector armature coil 6 is fixed. A cylinder 3 is planted onto the substrate 2, and a rotary shaft 1 is held so as to swivel to a bearing 1a which was fitted therein. An energized control circuit of the armature coil is formed as an IC and is placed on the projections 2a and 2b. The central part of a soft steel disc 4 is fixed to the rotary shaft 1, and a circle ring-like field magnet rotor 5 is fixed to the back of the disc 4. In addition, an armature D is fixed to the rotary shaft 1, and the synchronous turning with a commutator B is made. Pressure welding of brushes C-1 and C-2 is applied to both sides of the commutator B, and power is supplied from DC power positive and negative poles. As the result, this constitution is the same as that of DC machine, mass productivity and low cost can be carried out.

Description

[Detailed Description of the Invention] [Industrial Application Fields] -6. It is used as a power source for industrial equipment and consumer equipment as a coreless or cored three-phase small DC motor.

[Conventional technology]

Patent Publication No. 3g-1426 by the applicant, Tokukosho! There are q-J/No. 10, etc. There are also well-known three-phase DC motors that have commutators, brushes, or utilize Hall elements.

[Problems to be solved by the present invention] First problem Three-phase DC motors equipped with commutator brushes have a long history.
Therefore, it has been extensively researched technically. Therefore, there are almost no problems in terms of simplicity of construction, ease of assembly, and price, and it has a wide range of uses even today.

However, the service life is short due to wear of commutators and brushes, and this causes a high failure rate and mechanical noise.
Disadvantages such as large electrical noise have not been resolved.

Second problem: The Hall element (one of the magneto-electric conversion elements) is used as a position detection element to detect the angular phase of the magnet rotor, energizes the transistor circuit (J-phase bridge circuit), and controls the armature current. Is there a way to obtain a three-phase DC motor?

According to this measure, all the disadvantages of the commutator type DC motor mentioned above are eliminated.

However, there are disadvantages in that the assembly work is complicated and it is expensive. In particular, the smaller and flatter the object, the more serious this problem becomes.

Since three Hall elements are used, the number of lead-out lines is l-. Since the space in which the Hall element is located is a narrow void, this should be understandable considering this process.

In a three-phase bridge circuit, PNP type and NPN type transistors are connected in series to both ends of an armature coil.

Therefore, the voltage drop due to both becomes large, and in the case of a low voltage (S volt or less) DC power supply, there is a problem that the efficiency is significantly reduced.

In particular, when integrated circuits are used, the voltage drop of PNP transistors becomes even greater, and the above-mentioned disadvantages become even greater.

Third problem In order to simplify the configuration and create a small and flat electric motor (for example, the capstan motor of a small tape recorder called Walkman), there is a method to remove the Hall element and use the back electromotive force as a position detection signal. However, since startup is performed using a stepping motor, startup often fails.

Furthermore, if a co-phase electric motor is used, the ripple torque will increase, and if a /phase electric motor is used, the ripple torque will further increase, and there will be many problems in starting.

As mentioned above, the current situation is that when the structure is simplified and the device is made flat and inexpensive, problems arise in terms of characteristics and practicality is lost.

Fourth Problem: In a small semiconductor motor (brushless motor) with an output of less than 10 watts, it is desired that the control circuit thereof be housed within the motor housing.

To achieve this purpose, electronic circuits are integrated into integrated circuits (hereinafter referred to as I).
C).

Although some products for this purpose have been released, in all of them, only a part of the circuit is integrated into an IC, so that the above-mentioned purpose cannot be achieved. The problems that cannot be achieved are as follows.

That is, since all three Hall elements must be separately arranged at specific positions, it becomes difficult to integrate the entire device into an IC.

[Means for solving problems]

A new technical idea for solving the problem will be explained next.

FIG. 1 (vertical) schematically shows only the main parts of a well-known commutator type DC motor.

In FIG. 1, the symbol is a rotating armature, which is provided with three salient poles (n is l, 2, . . . ) and armature coils wound around these poles.

The armature is fixed to the rotating shaft l and rotates in synchronization with the commutator B. Symbol E is a stator including a field magnet.

Brushes C-t and C-co are pressed into contact with the commutator B from both sides, and power is supplied from the positive and negative electrodes of the DC power source.

The technology of the above configuration has been improved over a long history.

In other words, the configuration is simplified as shown in the figure, and mass production is excellent.
It can be made cheaply.

In the device of the present invention, the commutator B is a magnet for position detection, and the brushes C-i and C-co are configured as a magneto-electric transducer and an integrated circuit.
cL, 71b) contains one each. Naturally, at this time, the symbol B is a magnet rotor for position detection, and the symbol E is a fixed armature.

Alternatively, the symbol C-/ may be a Hall element only, and the symbol C-/ may be configured as an integrated circuit including the Hall element.

With the above configuration, it has the same configuration as a well-known DC machine, has a simplified configuration, is excellent in mass production, and can be manufactured at low cost.

The symbols C-/ and C-co are electronic brushes.

Of course, in order to achieve the same performance as a three-phase commutator type motor, a three-phase transistor circuit is required, so one transistor circuit is connected to two electronic brushes C-7 and C-2. A new configuration is required to allocate the data to

Furthermore, a new configuration is required for driving a three-phase motor using only two or one Hall element. Next, the method will be explained.

In order to use only one Hall element, the magnet rotor for position detection is provided separately from the field magnet rotor for torque generation. Multiple sets of these are provided as a set, and these are /
20 degrees apart, the output of the Hall element is 120 degrees in electrical angle facing the N and S poles (hereinafter, the display of electrical angles will be omitted). Third
A position detection signal with a width of 120 degrees is obtained.

A first conductor that conducts these position detection signals as a base input.
, the circuit including the λth and third transistors is a Hall element,
The child is included in the IC, and this is called the first IC.

The electrical angle from the Hall element described above is (60+is).

rL) Degree... le is a positive integer including O... At a distant position, another Hall element is provided facing the above-mentioned position detection magnet rotor, and the three types of position detection signals resulting from this are used as base inputs. A circuit including the fourth, fifth, and sixth transistors and a Hall element is referred to as an IC, and is referred to as a second IC.

A transistor bridge circuit controls the first and second transistors in the upper stage of the electrical circuit that controls the energization of the three-phase armature coil. The lower three transistors of the transistor bridge circuit are replaced with the third transistor, and the lower three transistors of the transistor bridge circuit are replaced with the fourth transistor.
5th, replace the first transistor, 3 of the armature coil
Controls phase energization to generate °C drive torque.

Also, by adjusting the relative angle phase between the magnetic pole of the field magnet rotor, the magnetic pole of the position detection magnet rotor, and one Hall element, the average value of the back electromotive force in each energized section of each armature coil is the maximum value. Set the relative positions of the three so that

As understood from the above means, 1. The second IC has the same effect as the brushes indicated by symbols C-1 and C-co in FIG. 1, and serves as an electronic brush.

However, according to the above-mentioned means, a three-phase bridge circuit is formed, and two transistors are connected to both ends of the armature coil, and this voltage drop makes it difficult to maintain a low voltage (below !V). If implemented, there is a disadvantage that the efficiency will be significantly degraded.

If the VCIC is further increased, the three PNP type transistors will further increase the voltage drop and increase the above-mentioned disadvantages.

In the device of the present invention, the first, second, . . . , and sixth transistors can all be of the NPN type, and one transistor is connected to each armature coil. Therefore, the voltage loss becomes small, and the above-mentioned drawbacks are completely eliminated. For this purpose,
The '1 Isogo coil of each phase is bifurcated, and the first
, the second and third phase armature coils are each composed of a pair of armature coils.

The device of the present invention has the following features: 1. One I containing the second Hall element
The means constituted by C, the seventh Hall element, and the required transistor circuit can be integrated into one IC, and the second Hall element and the armature coil can be constructed as external components.

No special magnetic rotor for position detection is required,
A part of the field magnet rotor can also be used.

In the case of an axial gap type coreless electric motor, it is possible to make it compact and flat by adopting a special configuration.

In other words, in order not to increase the thickness of the motor, the phase difference between the field magnetic pole and the position detection magnetic pole is adjusted so that the Hall element serving as the magnetoelectric conversion element is provided in the adjacent part of the adjacent armature coil and in the air gap in the vicinity. adjust. In this state, the armature coil is energized at 120 degrees so that the magnetic field is strongest at the center of the field magnetic pole, thereby increasing efficiency.

The position detection magnet is provided in an annular shape within the same plane on the outer periphery of the field magnetic pole, and has a width approximately equal to the winding width of the outer periphery of the fan-shaped coil.

Since the outer peripheral part of the fan-shaped coil does not contribute to the output torque, the space in this part is used to provide the position detection magnet, so that the electric motor can have a small diameter.

With the above configuration, the first. Second. The fifth and fourth problems are solved.

By using only one Hall element, the first
The second and third transistors are controlled, and from the back electromotive force (generating power) K of the two sets of bifurcated armature coils,
The purpose is achieved even if the fourth, S, and sixth transistors are controlled. [Function] The above-mentioned configuration has the following effects. First, the same two parts as the brush (the first Since it is driven by the second IC), the configuration is simplified, assembly is easy, and mass production is possible. Similarly, since it can be configured with one IC and one Hall element, the same effects as in the case described above can be obtained.

Secondly, the energization control of the armature coil is similar to that of a three-phase bridge circuit, so the output torque is large and the efficiency is increased.

Other functions are exactly the same as general semiconductor (brushless) motors.

When applied to an axial gap type coreless electric motor, it can provide an effective technology for downsizing and flattening.

Third, since each armature coil has one transistor connected in series, there is less voltage loss due to the transistors than in the well-known three-phase bridge circuit (in the case of a motor driven at low voltage). It is valid.

Furthermore, since the above-mentioned transistor is of NPN type, it is particularly effective when integrated into an IC.

〔Example〕

The details of the apparatus of the present invention will be explained with reference to the embodiments shown in FIG. 2 and subsequent figures. Components with the same symbols in the drawings are the same members, so redundant explanation will be omitted.

In FIG. 2, a piece of silicon serving as a magnetic path is stuck on the substrate λ, and a fan-shaped armature coil 6 is stuck thereon.

The details of the armature coil B are shown in Figure 3.The width of the conductor section that is effective for torque is 90 degrees in mechanical angle, and it is a magnetic disk that forms a magnetic path with equal pitches.

7, the armature coils 104, 10d
.

10h, 10a, 10n, and 10f are arranged. A cylinder 3 is installed on the substrate λ, and a shaft bearing 10c (dot point portion) K rotating shaft/ is rotatably supported inside the cylinder 3.

As the bearing, an oilless bearing or a ball bearing is used. Armature coils lOt&, 10b are provided on the protrusions 2a and b of the substrate λ.

The energization control circuit of 120,... is converted into an IC and has the symbol 29゜2.
It is listed as 91.

Returning to FIG. 2, the central portion of a mild steel disk is fixed to the rotating shaft l, and an annular field magnet rotor S is adhered to the back surface of the soft steel disk.

The details are shown in Figure 3.

The field magnet rotor S is composed of annular ferrite magnets in which N and S magnetic poles 5α, 3b, 3e, and zd (width is 90 degrees in mechanical angle) are provided at equal pitches along the circumferential surface. ing.

The symbol t is an internal hole. This embodiment is an axial gap type coreless electric motor.

The outer periphery of the field magnet rotor 5 serves as an annular position detection magnet rotor t, and its magnetic poles are arranged in sets of N and S as shown. 1 set of N,
The area between the S pole and the other pair is a non-magnetic field area, and is indicated by O. This width is the same as the width of the N and S poles.

The width of the N and S poles is 60 degrees in mechanical angle and 110 degrees in electrical angle.

The magnetic pole of the magnet rotor g for position detection is the symbol □(
8,' g h , . . . , and the zero magnetic field portion or the cutout portion of the magnet is indicated as 9 g, . . . .

A signal with a better signal-to-noise ratio can be obtained by using a notch. In order to make the notch, it is preferable to use a plastic magnet. Regarding the polarity of the field magnetic poles, it is better to set the magnetic poles j @ and je to the S pole and the magnetic poles 3ct and 3ct to the N pole, respectively.
Since the magnetic poles a, ifb, etc. are the same polarity, the magnetization work is easy.
It is effective because it is only a process.

Next, the effects of the above-described configuration will be explained with reference to the developed view of FIG. 4.

In Fig. μ, armature coils ioα, iob.

10e is a well-known three-phase armature coil. Model in which the dotted line armature coil 10 is moved to the position of symbol 10Q°
Therefore, the armature coil lθ1゜10 b,
/θ0 also becomes a three-phase armature coil.

The width of each armature coil is 1 gO degree in electrical angle, and the interval is 60 degrees.

Armature coils 10d, 10e, and 10f are armature coils 10cL, 10b, and 10b, respectively.
It is installed at the 10 e position. Each of these is considered to be Baifuala-maki. In other words, it is a unipolar type.

As shown in FIG. There is.

Hall element 71b is spaced apart from Hall element //4 by 1 gO degree. - In terms of boat fishing, they are separated by (60+l20) degrees. is a positive integer including zero. Therefore, the outer edge of the armature coil/Q e , 10 f is
As shown in FIG. 3(b), the shape is drawn inward, and the Hall element //b is provided in this part.

The width of the position detection magnet rotor t in the radial direction is approximately equal to the coil width of the outer periphery of the fan-shaped armature coil, as shown in FIG.

The energization of the coil in this part has no effect on the output torque, so
Even if a field magnetic pole is present, it is ineffective.

One of the features of the device of the present invention is that the outer diameter of the electric motor is reduced by providing a magnet rotor g for position detection in such an ineffective portion.
It has two characteristics.

Furthermore, since the Hall elements //LL and ifb are placed and fixed in the above-mentioned space, they do not overlap with the armature coil, and therefore have the feature that they can be constructed flat.

As shown by arrows and C in Figure 4, each width is 30 mm.
degree, and the field magnet rotor 5 moves 3 degrees in the direction of arrow A.
When rotated by 0 degrees, the Hall element enters the magnetic pole under the magnetic field d, so an output is obtained, and this output energizes the armature coil 10. After rotating another 120 degrees,
The Hall element //a enters under the magnetic field of the magnetic pole fe, and its output energizes the armature coil io e.

The energization angle is 120 degrees, and the driving torque is obtained by Fleming's force at the portion of the field magnetic poles 5IL and 5d where the magnetic field is strongest. Therefore, the efficiency is the same as that of the three-phase Y type. Another feature of the device of the present invention is that the magnetic poles of the field magnet rotor S and the position detecting magnet rotor g are arranged in phase as shown in the figure so as to satisfy the above conditions. When the field magnet rotor 5 rotates in the direction of arrow A, the Hall elements l/rL move to the magnetic pole gd.

fe, as it enters the zero magnetic field 91, the armature coil 1
0α, io r , and io b are each energized by 120 degrees to obtain output torque, so the motor rotates as a three-phase electric motor.

Next, the above-mentioned energization control will be explained using the time chart shown in FIG. 9 and the energization control circuit shown in FIG. 7 (h).

In FIG. 7, the output of the Hall element //4 is amplified by the operational amplifiers 27e and J7d and becomes a rectangular wave output.The terminal 311 is energized from the positive pole of the DC power supply.

When the Hall element // cL of the operational amplifier is opposed to the north pole, an output is obtained when the operational amplifier 27 d is opposed to the south pole.

The output of the operational amplifier COKU0 is supposed to be a curve with a width of 120 degrees in the time chart shown in Figure 9 (inclination), but N
Since there is a dead zone at the boundary point of the S magnetic pole, the angle becomes smaller than 110 degrees.

The output of the operational amplifier sqd also has a width smaller than the ixo degree for the same reason, and is shown as the curve tlr h in FIG. 9 (CL). The output of the operational amplifier 2C is a curve 1134.

The curves α and u+b are magnetic field distribution curves of the magnetic poles N and S of the position detection magnet rotor.

FIG. 7 (Returning to the phrase, the upper and lower inputs of the ex-i ratio OR circuit (mismatch circuit) 31 are respectively connected to the operational amplifier 2.
7 The output of CL and the output of operational amplifier core c are inverted.

Therefore, the curves asb and da6 in FIG. 9(G) are obtained.

The output of the mismatch circuit 4 is the curve 97 LL, lI?
It becomes b.

Fig. 7 (gradient transistor sr s, :tr b
, Rizo's base inputs are the curve Q! of FIG. 9 (tL), respectively. ;4.

II! b, lI'78, Hiro 7b. Therefore, the conduction angles of the transistors 53 conduction, sr h and ri ze also fall under the curve α, ash.

Q? Φ is the width corresponding to the duct b. Hall element //α
, transistors 5SΦ, srb, rre, etc. surrounded by dotted lines are integrated into an integrated circuit 49g. Symbol ko 9 b in Figure 3 Cb), 291
F is an IC pin serving as a terminal. Note q3/rt,
31 b, ・, ,? /f indicates an IC pin serving as a terminal.

The circuit shown in FIG. 7 (-) is almost the same as the circuit described above, with a Hall element //b and an operational amplifier 271! , 27b
, mismatch circuit d is a Hall element //a, respectively.

It performs the functions corresponding to the operational amplifier cores e, 2d, and the mismatch circuit 1. Transistor 3θl.

30b and 30e are NPN type as shown in Figure 7.Hall element //h, operational amplifier 2711
, J? b, mismatch circuit 2g and transistor 308
, 301. .

3θC is an integrated circuit and is indicated by a dotted line a9.

Symbols 26, UAb, . . ., and 6f are IC pins serving as terminals. In the transistors 308, 30b, , JθC, the Hall element llb is connected to the N of the position detection magnet rotor g.
, the S magnetic pole and the output when facing the non-magnetic field part are electrically connected.

The Hall elements //b and //b have a (40+/20l) voltage difference, as shown in FIG.

In this embodiment, n=/.

Details of this phase difference will be described later.

What is shown in FIG. g is an example of a circuit that energizes the armature coil using ICs 2q and 2qa in FIG.

The armature coils 104, 10b, . . . , lOf have the same symbols in FIG. μ.

Terminals C, 2h, and 1C are connected to terminals j/e, j/tL, and 3/t in FIG.
IL, 10e.

10b, energization with a width of hW is sequentially performed.

Such energization curves are curves 61g, 61g,
47h, ... and curve All 8.41b, ... and curve 6
De1. ..., and continuous output torque is obtained.

Transis jl 30 eL, 30 in Figure 7 (tL)
The conduction angles of transistors 3α, as b, and szc are 120 degrees, and there is a phase difference of 1 gO degree from the conduction angles of transistors 3α, as b, and szc shown in FIG.

Figure 7 (The terminals e, d and rollers of the slope are connected to the terminals d, e and f of figure g, respectively, so
The output torque due to the above-mentioned energization of the armature coils 10cL, 10g, and 10f is exactly the same as that of a three-phase Y-type connected motor, and thus exhibits the same characteristics.

The symbols up to d3 in the figure indicate the positive terminal of the DC power supply.

Figure 7 (Tsukasa, symbol 3λ conductor in (b), 3 pieces b, ..., 3 pieces f
is a Zener diode to protect the transistor when the armature current is cut off, and other well-known means may be used.

Figure 7 (time chart of ri, curves daj, g, ,
Hour 6, q? The torque curve of energization of the armature coil by the position detection signal of Φ is the curve <za' g , qg b ,
It becomes pge.

Curve 41z rL, tIs b, 4c? From a, the torque curve based on the position detection signal of FIG.
9 LL, u de b.

It becomes aq e. The combined torque of both lines becomes the output torque. The thick line portion is the output torque. The torque due to curve '7h is a counter torque, but the torque due to curve '79
Since there is a positive torque of e, the positive torque prevails and there is no problem in starting.

However, since it induces vibration, Figure 7 (g) and (b)
So, capacitor 24? It is preferable to attach / externally and use it as a no-pass coiler to eliminate the curve widening b.

In the torque curve, since the width of the position detection signal lIs i is slightly smaller than 110 degrees, there is a slight gap between the thick lines. However, since it is continuous due to the inductance of the armature coil, there is no major problem.

In Figure 7 (@), the curve lI9 is from the curve ↓,
Although the phase is delayed by 110 degrees from the curve qα
Since there is the same torque curve to the left in degrees, it is safe to think that the torque curve is advancing in phase.

In FIG. 2, the magnetic disk 7 is moved below the substrate λ, the armature coil 6 is fixed on the substrate λ, and the magnetic disk 7 is
is fixed to the lower end of the rotating shaft l, and the field magnet rotor 5
The present invention can also be implemented with a configuration in which the rotation is synchronous with the rotation.

The armature shown in FIG. 3 (-3) is an embodiment in which the number of armature coils is multiplied by U.

The overall configuration is the same as in Figure 2, with a field magnet rotor! There are 5 N and S magnetic poles.

There are 6 fan-shaped armature coils, symbol) 08°10d
, 10b, 10t, ---, 10e,
10f and others 10-/, 10-2, 10-j, and the width of the conductor portion effective for torque is lIS degrees (mechanical angle). Armature coil 10-1, 10-co, 10-
Each of the J's is double-wound and there is a set of J's.

ICs indicated by symbols 29 and 29Φ are the same as those in the previous embodiment, and are fixed on the protrusions Jb and λQ of the substrate.

The Hall element ii a is placed between the armature /θb, 10g, 10e, and 10f, as in the previous embodiment.

For this purpose, armature coils 10b, 106, IOe.

The outer edge of tof is deformed into a shape that is pulled inward.

The Hall element //h is spaced apart from the Hall element itα by (60+/Qn) degrees. In this case, k = 6.

Figure 9 (In Tsukasa, arrow M, which is the width between the dotted lines, is 60 degrees. The Hall element // g
// b must be spaced apart. However, the same effect can be obtained even if the distance is 9 times W degrees (a positive integer), so the above-mentioned formula for (60+120 n ) degrees is obtained. It is clear that the present invention can also be practiced by the embodiment shown in FIG.

Next, a case will be described in which the present invention is implemented in an electric motor having a core (magnetic core).

Fig. 5 (In the drawing, side plates (circular) /λα, /16 are fitted from the left and right on both sides of the cylindrical outer casing made of mild steel.The central protrusion of the side plates 12α, /λb is equipped with a shaft bearing. 13a
, /j b are fitted, and the rotating shaft / is rotatably supported.

The rotating shaft/VC is connected via the plastic filling material at the hitting point.
A cylindrical field magnet rotor /q is fixed.

A fixed armature 15 made of laminated and solidified silicon steel plates is fitted inside the outer fal-.

Although the above-mentioned one is an adductor type, it can also be an abductor type. FIG. 5(b) shows an abduction type.

held.

A cup-shaped rotor U/ made of mild steel is fixed to the upper end of the rotating shaft /, and an annular field magnet rotor n is fixed to the outer inner surface of the rotor U/.

The outer side vc of the cylinder 19 is fitted with a central hole of a fixed armature 3 made of laminated and solidified silicon steel plates.

Field magnet rotor in Figure 6 (Figure CcL)/
It is a developed view of e and armature/3. Since the configuration shown in FIG. 5Cb) is exactly the same, its developed view is omitted and not shown.

Field magnet rotor/da has N and S magnetic poles/lIa
, /q b , ... are dapolized with equal width.

Further, at its end (the right side portion indicated by the dotted line R at the right end in Fig. S), a position detection magnet rotor is provided, and as shown in the figure, a magnet rotor with a width of 120 degrees is provided.

It is magnetized to the S magnetic pole, and the notches or notches between the N and S magnetic poles of each set are indicated by symbols so a and so f.

The electric machine has salient poles /3α, /! ;b,/! I;Q
are provided, and each salient pole has armature coils α, COd and ! A, #g, Me, nf are arranged and wrapped. The width of each salient pole is 110 degrees, and the magnetic pole/
Hiro I! , '/4' b , equal to the width of...

Furthermore, the left and right ends of the salient poles /r G , /r b , and /ra are separated by 6 (7) points from each other.

Comparing the developed diagram in Figure 4 and the developed diagram in Figure 6 (ri), we find that the width of the salient pole 1!; @ , /3 b , /!; 10
(The number, width, and position of ! are the same. Also, the magnetic poles of the field magnet rotor/q have the same configuration.

Furthermore, the magnetic pole λdaa of the magnet rotor for position detection,
The configurations of 2y b , . . . and the magnetic poles gα, axial, . . . are also the same.

The positions of the Hall elements //I& and //h (both E have the same symbol) are also the same.

Therefore, it is clear that the motor can be operated as a three-phase DC motor by controlling the energization of the armature coil using the circuit shown in FIG. 7 (LL) and FIG.

The armature coils 10 a , 10 b , . . .
104 are armature coil coils 1. Kob, ..., Koe
This is the result.

Fig. 6 (The armature coil is wound around the edge and attached to the magnetic pole H conductor.

The above-mentioned circumstances are the same for the other armature coils, u h , 2s and armature coils xe , xfK. b is illustrated so that an output that is more advanced in phase than the Hall element //α is obtained, but as mentioned above, it is sufficient to obtain an output with a phase difference of 1 gO degree, so
Hall element //b may be located on either the left or right side of Hall element //8.

This embodiment has the effect of increasing the output torque because of the core. Double the number of magnetic poles of the field magnet rotor. 3
It can be doubled. At this time, the number of salient poles also increases correspondingly.

The number of salient poles is 3 for one set of N and S magnetic poles of the field magnet.
The present invention can also be implemented in the configuration of any of the well-known DC commutator motors. Other effects are the same as in the previous embodiment.

Regarding the developed view of Fig. 6 (-), the above-mentioned Fig. 7 C slope,
An example of energization using the circuit (b) will be described.

It enters a magnetic field, and the armature coil Φ is energized and magnetized to the north pole.

Due to the repulsion and attraction of the magnetic poles 1tta and 1lIct, the field magnet rotor/da is driven in the direction of arrow A and is under the magnetic field. Through this output, the armature coil ne is energized, and the salient pole 15C Since it is magnetized to the S pole, the magnetic pole /'I e! , /IId, field magnet III is driven in the direction of arrow A. The armature coil rotates by alternating energization of the armature coil.

Salient pole/! ; G, /! Since Q is magnetized to N and S poles, salient pole l! The magnetic flux passing through b cancels each other, disappears, and is not magnetized. Therefore, there is a feature that no counter torque is generated.

Japanese Patent Publication No. 59-31190 cited in the [Prior Art] section
In the technique disclosed in the above issue, three salient poles are excited one after the other in sequence, so there are the following problems.

In other words, the developed view is the same as the developed view in Figure 6 (tL), so
Let's explain using this.

Surprise! α is excited, field magnet rotor /4 (
is driven in the direction of arrow A, but at this time, a magnetic attraction force is also generated, so the rotating shaft and the bearing collide, producing loud mechanical noise during rotation.

Salient pole 11h, /! There is a serious drawback that the same pre-collision occurs when re is excited. During this collision, if the bearing is an oil-less bearing, the bearing hole expands due to the impact, which also increases the impact energy, and this phenomenon is mutually amplified, and according to actual measurements, it can be used with an electric motor with an output of about 1 watt. is 2 to 5 hours. This is a fatal flaw. Furthermore, when the salient pole/event G is excited to the N pole and generates an output torque, the salient pole ts b , i
Both s'e are excited to the south pole. Therefore, the subsequent qo
When rotating by degrees, the salient pole /j b has an anti-torque.

Salient pole”/3 e! is positive torque, positive at the next 90 degree rotation.

The counter torque is reversed. Even if the positive and negative torques cancel each other out, there is the disadvantage of inducing Joule loss and vibration.

According to the device of the present invention, as described above, the above-mentioned drawbacks are eliminated. This is because the generation of rotational torque is the same as that of the well-known three-phase Y-type commutator motor.

The developed view shown in Fig. 4(b) shows the field magnet rotor l.
Magnet rotor for position detection 244 m, 21
b, . . . are shown in a developed view. Figure 6 (LL
) are different from the magnetic pole λda s, 2ph and the magnetic pole koda d.

! 47g's N and S magnetic poles are reversed.

Therefore, the situation is the same even on the left side of the magnetic pole boundary indicated by the symbol P.

Therefore, the magnetic pole /4(K, /! b,... and the magnetic pole JΦ,
J41A.

It is possible to perform magnetization in one operation, and the magnetic flux interference between the field magnet rotor and the position detection magnet rotor is small.

The above-mentioned circumstances are exactly the same as described above for the magnet rotor 5.5 shown in FIG.

Figure 3(g), (as shown in the phrase, IC of Figure 7(b)
The integrated circuit indicated by the symbol 17 is fixed to the outer casing 1 or the substrate/g, and has a Hall element/g in the center.
/ 喀 is a position detection magnet 8 signals.

=4th,... is facing.

The IC including the Hall element //h shown in FIG. 7(-) is omitted and not shown.

The magnetic rotor n in FIG. 5 has the same configuration as the magnetic rotor /Q in FIG.

... is end-face magnetized and the Hall element of the integrated circuit 17 //
It is facing 11.

Also, the configuration of the fixed armature sword is also the best! Since it has the same configuration as the fixed armature IS shown in Figure (3), it is driven as a three-phase electric motor similar to the embodiment shown in Figure 3 (2).

In the case of FIG. 6, it is necessary to magnetize the field magnet rotor and the position detection magnet rotor in one step, and the magnetic poles /a a, lab.

There is a drawback that the magnetic flux of... invades the magnetic poles 2'l'L, Jl h,... and disturbs the outputs of the Hall elements //aL, //b.

Next, another embodiment for controlling the energization of the armature coil will be described with reference to FIG. 7 (-J).

The output corresponding to the S and N magnetic poles of the Hall element l/b supplied with power from the positive voltage terminal 77g is the operational amplifier 31a,
3gA becomes a rectangular wave, and this electrical signal is shown in the curve Ha, ll in the slope time chart.
! ; Denoted as h. Curve qda4. ←b is a magnetic field distribution curve of the S and N magnetic poles facing the Hall element //h.

The conduction angle of the transistor II/eL is the width of the curve ttsa in FIG. 9(b). The input signal to the differentiating circuit 391 is the inverted output of the operational amplifier 3.
Figure (The curve of the phrase is Da 6.

The output of the differentiating circuit 39α becomes a curve 3/. This signal pulse is applied to the S terminal of the flip-flop circuit (hereinafter referred to as circuit 1), the output of the Q terminal becomes high level, and the transistor D/b becomes conductive.

The inverted output of operational amplifier 31b (Fig.
The differential pulse signal obtained by differentiating the gradient curve, line go 8.5θb) by the differentiating circuit 39b is shown as a curved line in FIG.

The curve viewing signal is input to the R terminal of the F circuit qα and is inverted, so that the transistor q/b is turned non-conductive. At the same time, the curved tacho signal is input to the S terminal of the F circuit lIob, so the output of the Q terminal becomes high level, and the transistor d/e becomes conductive.

The conduction angle of transistor II/α is shown in FIG.
r, ya (width 1 phase is the same as curve 11.1α.)
Therefore, the conduction angle of transistor 9/b is given by curve S3b
Therefore, the time gap between the curves 53fL and sJb disappears. 6th When the output of the operational amplifier 3gα is obtained again, the differentiating circuit 39e! A differential pulse is input to the R terminal of F circuit ao b through
becomes non-conducting. The conduction angle of transistor q/C is the seventh
This results in a curve 530 in Figure (h).

The time gap between both sides of curve 3C and curves s3a and s3b disappears.As explained above, transistor 4
The effect is that the conduction of 1/@, , da/b, and ψ/C is carried out sequentially and continuously.

In order to make the conduction angle of each transistor 120 degrees wide, the widths of the N and S magnetic poles of the position sensing Sgenet rotor can be adjusted.

The dotted line 37 is an integrated circuit (IC), and the terminal 37b is the negative terminal of the power supply.

Terminal 37 e, , 7? d, 37g is the third
Terminal IJd in the figure.

2-, which is connected to the conduit f.

The Hall element //b in Fig. 7(-) is replaced with the Hall element //eL as in the case of Fig. 7(b), and the Hall element //b in Fig. 7(C) is
With a circuit having the same configuration as the transistor lI/1,
41/h, three transistors (NPN type) corresponding to lAte can be activated. Terminal 3,
When the terminals corresponding to 3rd and 3t are connected to the terminals shown in the figure, respectively, the terminals shown in the figure will be connected.

(It can be operated as a three-phase Y-type electric motor in the same way as in the case of the phrase.
:1 h, etc. are omitted and not shown.

As can be seen from the above explanation, the Hall element //cL.

An electric motor can be driven by two ICVCs including //6.

1 circuit in FIG. 7(C) <l l! , <#b, position detection signals are obtained continuously over a width of 110 degrees, so the torque ripple is small and the generation of ridges is suppressed.

Differential circuits 39G, 39b, and 39a require capacitors for differentiation, and these capacitors are external components of the IC. In order to avoid this, a well-known rainbow trigger circuit can be used.

The circuit shown in FIG. 7(d) is a differential circuit 39L'L,,j
9b.

This is a means to reduce the number of external parts by using one capacitor for the differentiation of 390.

Terminals A/@, A/b, and A/12 receive square wave electrical signals troa, bob, and 60e.
is entered. Curve 60C6 is the inverse of curve 60@.

The electrical signal of the curve &OG, 40b, 606 via the OR circuit is connected to the capacitor 63. The resistor 64c is energized,
Three differential pulses of the rising portion of the number 7 are obtained sequentially. This differential pulse is processed by an AND circuit 458.6jb.

6s It becomes the lower input of e. The upper input is terminal 4/a
, bib, and tie, so the terminals 6ta and ttb.

The three differential pulses described above are separated and output from Ate.

The output of terminal 44 g is connected to the F circuit tI0b of Fig. 7 (+).
The R terminal of F circuit clause 6, the output of terminal At b, the S terminal of F circuit aob, the output of terminal t6e of F circuit l
The purpose is achieved by inputting the signal to the S terminal of l0tx. In other words, only 631 external capacitors are required.

In the above case, terminal 6c 161b, input terminal A of Al6
Since a speed signal is obtained by converting the electric pulses of ls m , A4 A, A4 e, . . . into an FV conversion circuit, constant speed control can be performed by known means.

In Fig. 3, the exposure of the DC power supply positive electrode is shown in Fig. 3 (cL
), (phrase, (C) IC bin uA G, 3/11
It becomes the power supply positive pole that is supplied with power, and the power supply negative pole 41F, ? A
IC pin 26 in Figure 7 (a in (b), ('')
b, 31b.

When the armature coil lOd is energized to the left and output torque is generated, a back electromotive force is generated that also energizes the armature coil 108 wound in a bifurcated manner to the left, and this voltage is proportional to the rotation speed. ing.

The above-mentioned circumstances are exactly the same for the armature coils toe, io f and the armature coils 10b, 10-.

Therefore, the ti flowing between the emitters and bases of the three transistors via the three diodes is proportional to the rotation speed, so the voltage drop across the resistors (smoothed by the smoothing capacitor) is also proportional to the rotation speed. It is proportional to the rotation speed.

The voltage due to this voltage drop becomes the input to one terminal of the operational amplifier 33, and the + terminal input is the standard positive voltage terminal, 7.7
g.

Symbol 3Sα, 3! b, . . . , 36f are multiplication circuits.

The terminals 7A@, 34b,..., 36f are the seventh
Transistor 3θI, 30 in Figures ('l) and (b)
b, , 7(1)6, jj'8. ! Ub.

An electrical signal that becomes the base input of sre is input, and this electrical signal is multiplied by the output of the operational amplifier J3, and the multiplied value is applied to the terminals jA g , 3A h , ..., j
Output from AZ. This output signal is shown in FIG. 7 (4).

(Phrase transistor 3θa, J(1; l b,
This is the base input for 30 e, jj 4, jjb, and sre.

When the voltage proportional to the rotational speed of the motor (the input to one terminal of the operational amplifier 33) is smaller than the reference voltage 3310 input, the output of the operational amplifier 33 is also large, and as shown in FIG.
, (phrase transistor 3θα8.7θb,...a, 3j
e operates in or near the saturation region and is accelerated with the maximum torque. The input of one terminal of the operational amplifier 33 is
When the voltage approaches the reference voltage, the output of the operational amplifier 33 also decreases, and the transistors 301B, 3θb,..., sse
The rector current, that is, the armature current also decreases, and when the rotation speed reaches a lance with the load, the speed becomes constant. In other words, constant speed control can be performed.

Depending on the amplification rate of the operational amplifier 33, the above speed can be maintained at a value close to the set speed.

Naturally, the transistors 3o a , , yo b
,….

sire is driven in the active region.

Figure 7<l) is Figure 7 (gradient, (phrase circuit ti I).

C, Hall element //a is IC pin 7 Hiroto, 7 Hiro.

711-, 7 Hiro] is an example in which it is externally attached.

Since it is a single IC, there is an effect that the circuit can be made inexpensive. The IC is shown as a dotted line symbol 73, and the negative electrode of the DC power supply voltage is connected to IC pins 7 弘α and 悴t.

The internal circuit of 7(:'74! is shown in Figure 7('Z),
It has the same effect as the book with the same symbol as Cb).

Figure 7 (Gradient, (gradient IC pins 2be, 2Ad, 26g.

3/e, 3/d, 3/#kt,, IC pin 1tAb, respectively.

7 Hiroe,…, 74! y.

Fig. 7 (External capacitor roller 31 is common, becomes capacitor 7j, and is an ICC bottle.

Connected to 7 Hiroi.

IC bin (terminal) 71Ab, 71Ae, 71Ad
are connected to terminals Q2d, 112g, and 1I2fK in FIG. 5, respectively, and ICC pins g, 7≠f, and 7hi are connected to terminals 〇L, 112g, and q2e in FIG. 5, respectively.

Since it is clear that the embodiment of FIG. 7 has the same effect as the embodiment of FIG.

With 101 components, the only external components are a Hall element and a capacitor 7S, which can drive a three-phase Y-type motor, providing an effective technical means.

This embodiment is effective for small-sized devices with an output of several watts or less.

The above-mentioned single IC can also be made using the circuit shown in FIG. 7(C).

Next, FIG. 7(f) K will be explained.

This circuit is an example in which a motor is driven by an IC including one Hall element.

The armature coil must be double-wound. Although it can be implemented using the circuits shown in FIGS. 7('l) and (5), an embodiment using the circuits and circuits shown in FIG. 7(C) will be described below.

In Fig. 7, Hall element //h, operational amplifier 31
8, 31 b, differential circuit 39 a, j? b
, 39 e.

Up to F circuit ψ, u15. ) transistor lIlα, dalb.

9/e is the same member as the one with the same symbol in FIG. 7(0), and its operation and effect are also the same. Therefore, when the Hall element /lb faces the N and S poles of the magnet rotor for position detection, the position detection signal causes the transistor /lb to
8. Hiro/b and #/e are sequentially energized and conductive, and the conduction angle is ˜W degrees.

Therefore, the armature coils 10 d , 10 t , 1
0 f is also supplied with power from the positive electrode q38 of the DC power supply, and is sequentially energized with a width of W degrees, and its output torque curve is shown in Fig. 9 (
The curve of ri becomes like α, '79 b, g9o,
Continuous torque is obtained to drive the electric motor.

When the armature coil io d is de-energized, that is, the transistor ai a becomes non-conducting, the terminal lIj
Electricity is applied from W in the direction of the arrow, and resistor 7#l! .

The voltage divided by 71 b is the voltage divided by transistor 4? / d
is applied to the base of the circuit and becomes conductive. Therefore, the armature coil lθ is energized.

The torque due to this energization is shown in Figure 1 (curve (solid line)).
Since it becomes Hiro9, it becomes an anti-torque.

Such counter-torque is patinated by the means described below.

The voltage on the collector side of the transistor Hiro/d, is the resistance t
Since it is divided by t a and xi b and becomes the base voltage of the transistor Q/i, the generated power in the direction of the arrow F is added to the voltage at the terminal 3 flaw, and it becomes the base input of the transistor 6111/eL. Become.

Therefore, the transistor 1llrL is the operational amplifier 3g1
Even if the output of
The energization of & is not started, and the generation of counter torque is prevented.

When the magnet rotor rotates and armature coil 10G enters the magnetic field of the next opposite magnetic pole, the power generated in the direction of arrow F disappears and is reversed, so transistor 'I/G becomes non-conductive for the first time. . Also, at this time, the armature coil io r
The generated power of L is in the direction of the arrow, and the voltage added to terminal q3C is the resistance 781! .

711b, it becomes the base input of the transistor Hirold and becomes conductive.

Therefore, the armature coil 10g is energized by a width of 0 degrees.

When the armature coil 10 (t enters the next magnetic field, the generated force in the direction of the arrow is reversed, and the generated force in the direction of the arrow F is also generated, so the transistor IIl nL becomes conductive and the armature coil to d is turned on again. It is energized only during ttro degrees.

As described above, the armature coils 10α and lOd are alternately energized to generate output torque.

The above-mentioned situation is exactly the same for transistors 'I/b and tI/g, and armature coils 700 and 7of are alternately energized with a width of Ir0 degrees.

Although not shown, the output of terminal n is divided by - resistors and input to the base of transistor 'I/h.

The situation is the same for transistors II/0 and tttf, armature coils 10b and 10g are energized alternately with a width of 110 degrees.

Although not shown in the drawings, the output of the terminal 3 is divided by L- resistors and input to the base of the transistor 1IUe.

The voltage divided by the resistors 7de Φ, 79b and the resistors fQ g and zaoh serves as the base input of the transistors μl# and Hirolf, and the effect is on the resistor 7#g.

'Ill b. The symbol 76 surrounded by a dotted line indicates an integrated circuit, and the IC pin that is the terminal is the symbol? ?
'L,? 7 b ,..., 77h.

The electric motor is driven by energizing the armature coil described above.

At startup, that is, until the power generated by the armature coil increases sufficiently, the output of the Hall element //b causes the armature coil 10 to
The difference from the previous embodiment is that d, 10g, and 10f are energized to perform stable startup, and that the temperature is 110 degrees during energization.

Other effects are the same as in the previous embodiment.

The armature coils io a , to b , . . . can be replaced with the armature coils xa , x b , . . . .

Also, as understood from the above-mentioned operation, the armature coil l
0LLI10d, transistor/LL, Q/(L.

Resistors 7 &'G, 7J b, za/CL, l:Ib constitute a bistable circuit. Armature coil 10e, 10
f, transistors 9/A, 4 (/- are also bistable circuits, armature coil 10b, tOa, transistor It/l'.

A/F is also a bistable circuit. The same objective can be achieved by using similar means to control the energization of the armature coil using only 1/1 Hall elements. Figure 7(f) is
The armature coils 10 C & , 10 b, /θC are started by controlling the energization by the output of the Hall element //b, and after starting, one armature coil of the same phase is mutually connected to the other one armature coil. The driving torque is obtained by applying current through the induced voltage induced in the child coil.

Another embodiment achieving the same objective is shown in FIG. 7(!I).

In FIG. 7(J), members with the same symbols as those in FIG. 7 perform the same functions.

By the output of Hall element //b, transistor tag / @
, lI/A, u/e are controlled, and each armature coil is energized with a width of /20 degrees to start, as in the case of Fig. 7 (a). .

When the transistor jN'/s becomes non-conductive, the generated voltage in the direction of the arrow makes the transistor a conductive, so the voltage divided by the resistors ♂3a and 5b becomes the base input of the transistor ld, and this conducts. Therefore, the armature coil 101 & the transistor j' hiro/
d may be conductive, but in order to conduct electricity at 120 degrees,
It is preferable to adjust the resistance ratio between the resistors gsa and the male 5b. Transistor Ub.

F/g, armature coil 10e, tOf, )
The same situation as mentioned above applies to transistor re h.
The armature coil 10el is energized by the induced voltage of the armature coil 10f.

Transis I die, Hiroif, armature coil 10b.

10a,) The situation is the same for rank

As can be seen from the above explanation, it is driven as a three-phase electric motor. It is well known that the induced voltage shown in Fig. 7 σ), 0) alternately energizes and drives the bifurcated armature coils, but since it is driven as a stepping motor at startup, load fluctuations For example, in cold regions, when the viscosity of lubricating oil increases, startup failures occur frequently.

It cannot be used when there are load fluctuations.

This embodiment has the effect of completely eliminating such drawbacks. The part surrounded by the dotted line 76ffl in Figure 7(s) is I
C, and the IC pin has the symbol 77'! , 77b.

..., 77h.

Armature coil 101! , 10 b , . . . can also be implemented by separating the armature coil coils α, n b , .

Such an armature coil is an external component, and has the characteristic that a single IC can drive the motor.

In order to reverse the electric motor of this embodiment, the following means is used.

Transistor 'IF/4, Hiro/h, II/
With the base input signal of e, the transistor li/d,
The armature coils 108, 10e, 10 are switched to drive and control the ttlt and a/f respectively.
Due to the induced voltage in h, the transistor #/I! , Hiro/b, and Q/6 are made conductive, and the motor can be reversed.

〔effect〕

First, by using x or one IC called an electronic brush, the configuration of a small three-phase DC motor can be simplified, and a motor that can be mass-produced and is inexpensive can be obtained.

Second, only two or one Hall element is required, and the control circuit that is housed in one or seven ICs can be integrated into an IC, so the manufacturing process is the same as that of the conventional commutator type. This simplifies the process significantly.

Thirdly, in the case of a coreless motor, the above-mentioned IC can be placed on a substrate on which armature coils are arranged in a space between the armature coils, so that a flat armature can be constructed.

Fourth, in the case of an electric motor with a core, the above-mentioned IC is housed in a part of the cylindrical casing, so there is no need for an external printed circuit board for an electric circuit as in the prior art.

Therefore, the whole becomes small.

Fifth, since the position detection magnet rotor is provided adjacent to the field magnet rotor, the same magnet rotor can be used and the magnetization can be completed in one step.

Sixth, mass production of ICs reduces the price, making it virtually the same price as motors with commutators and brushes, and is free from breakdowns, mechanical and electrical noise, and has a long lifespan. You can get something that lasts a long time.

Seventh, a three-phase electric motor can be driven with one position sensing element,
The starting torque is large and there is no starting failure.

gth, since all of the energization control circuits use only one NPN transistor in series with the armature coil, they can be driven at low voltages and can be easily integrated into ICs.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram explaining the idea of the device of the present invention, FIG. 2 is an explanatory diagram of the configuration of the coreless type device of the present invention, and FIG. 3 is a diagram showing the magnetic rotor and fixed electric machine of the device of FIG. FIG. 4 is an exploded view of the magnet rotor and armature coil of the device shown in FIG. 2; FIG. Fig. 6 is a developed view of the magnet rotor and armature coil of the device shown in Fig. 5, Fig. 7 is a energization control circuit diagram of the armature coil of the device of the present invention, and Fig. 7 is a wiring diagram of the armature coil. , FIG. 9 shows time charts of the position detection signal and output torque of the device of the present invention, respectively. /...rotating shaft, /W...bearing, B...commutator, C
-/, C-co...Brush, D...Rotor, E...Stator, Co...Substrate, 3,/R...Cylinder, Da...Mild steel plate, ! ,The. /Q, u...Magnetic rotor, 6, 101! . io b , io e , ・, xa , x b
, a a , ... armature coil, 9 ... hole,
, i @ , j b, +**. t a, t b, N*-1lIIS, lllbom
, 21Ir&, 211h. ...Borode, 7...Magnetic plate, 77g/lb...Hall element, 17.29.298, 73.7A, 7
6g. 37...IC%/! ;, 2J...armature, lco, /
Yu1゜lcob...outer casing, 73m.../?
h, xz a, m b,... bearing, 21
...Rotor, 7g...Substrate, /j I! , /! b, /; O... salient pole,
, 27 W λ76, . 27 d, , 31tα, 311: b, 3J
…Operational amplifier, 30 N, 30 b, …,
rr c, sr b, ..., Hiro lα, da1 h. II/e...transistor, tm8. Tuyh…
Flip-flop circuit, 3W α, 39B,
396... Differential circuit, 6j I! , 4j b ,
6j f'J-...AND circuit, X, Xα...mismatch circuit, 6ko...OR circuit, 3s g, 3s b,
-, 3s f...multiplying circuit, evaluation eL, zQ, b, evaluation C...
Transistor, gi, pot b...magnetic field curve m, hirot+
-Da Ib, Dajima Daku g, II7 b
, 41j (! , gujd, ll3g, l
tj,! ;0 Φ, s. b,! rJ,tx,! ; J b *, 13
e, A? tx, A7 b, 4J' 11
. 61 b, 69 a, A9b, 70eL,
70b, ? /a, 7/h. 72G, 72b... Position detection signal curve, S/, Tacho... Differential pulse curve, lag a, Qt b,
tlg c, 119 s. gq b, uq e...torque curve.

Claims (7)

[Claims] (1) In a three-phase semiconductor motor, there is a fixed armature equipped with a three-phase armature coil, a rotating shaft rotatably supported by a bearing provided on the fixed armature, and a rotating shaft centered on the rotating shaft. A field magnet rotor equipped with field magnetic poles in which the parts are fixed and rotate synchronously, and magnetic flux penetrates the armature coil to generate driving torque, and a position detection rotor that rotates synchronously adjacent to the rotor. a magnetic rotor, and a magnetic pole band provided along the circumferential direction of the magnetic rotor, in which N and S magnetic pole portions and non-magnetic field portions each having a width of approximately 120 degrees in electrical angle are sequentially arranged; A first magnetoelectric transducer that faces the magnetic pole band and obtains a position detection output, and a position detection output that is obtained when the magnetoelectric transducer faces the above-mentioned N and S magnetic poles and the non-magnetic field part. , approximately 120 in electrical angle
The first, second, and third position detection signals adjacent to each other are obtained in sequence with a width of 1.5 degrees, and the first, second, and third NPN type transistors are made conductive by using these position detection signals as base inputs. an electric circuit including a first magnetoelectric conversion element and first and second
, a first integrated circuit made by integrating the electrical circuit including a third transistor, a second magnetoelectric conversion element, and fourth, fifth, and sixth NPN transistors, and a second magnetoelectric The position detection output obtained when the conversion element faces the above-mentioned N and S magnetic poles and the non-magnetic field area allows approximately 12
The fourth, fifth, and sixth position detection signals that are sequentially adjacent to each other with a width of 0 degrees are obtained, and the fourth, fifth, and sixth NPN types are conducted using these position detection signals as base inputs. In the gap between the second integrated circuit made by integrating transistors and the fixed armature, the first and second magnetoelectric transducers are arranged to face the magnetic poles of the position detection magnet rotor, and are set at an electrical angle (
60+120n) degrees...n is a positive integer including zero...The first and second integrated circuits arranged and fixed apart from each other, the first and second armature coils of the first phase that are bi-Fullar wound, and the Bi-Fullar windings. The third and fourth armature coils of the second phase are wound, the fifth and sixth armature coils of the third phase are bifurcated, and the first, third, and fifth armature coils are wound. are energized by a DC power source through the first, second, and third NPN transistors, respectively, and the second, fourth, and sixth armature coils are connected to the fourth, fifth, and sixth NPN transistors, respectively. An electric circuit connected as an external component of the first and second integrated circuits, the positions of the first and second magnetoelectric conversion elements, and the rotation of the field magnet so that the current flow is controlled by the DC power supply through the transistors of the transistors. Adjust the relative angular phase between the magnetic pole of the child and the magnetic pole of the position detection magnet rotor so that the average value of the back electromotive force in the energized section of each armature coil becomes the maximum value. A three-phase electric motor driven by an integrated circuit, comprising: means for setting the relative position of magnetic poles of the motor. (2) In the claim set forth in paragraph (1), the non-magnetic field part of the position detection magnet rotor is a notch, and the boundary between the N and S magnetic poles is the N field magnet rotor.
, a three-phase electric motor driven by an integrated circuit, characterized in that the motor is magnetized in alignment with the boundary of the S magnetic pole. (3) In the claims set forth in paragraph (1), the three-phase DC motor is an axial gap type coreless motor, and the width of the armature coil is located on the outer periphery of an annular field magnet rotor. An annular position detection magnet rotor having a winding width equal to the width of the first integrated circuit,
The second magnetoelectric conversion element is driven by an integrated circuit characterized in that the first and second integrated circuits are fixed to a fixed armature so as to face the magnetic poles of the position detection magnet rotor. 3-phase electric motor. (4) In the claim set forth in item (1), the invention is characterized in that a means is provided to eliminate the counter-torque generated at the boundary between the N and S magnetic poles of the position detection magnet rotor during rotation. A three-phase electric motor driven by an integrated circuit. (5) In the scope of the claim set forth in paragraph (1), a fixed armature made of laminated and solidified silicon steel plates and provided with 3n salient poles (n is 1, 2, ...), and a fixed armature with a winding around each salient pole. a field magnet rotor rotatably supported by a rotating shaft and magnetized with a plurality of N and S magnetic poles that form a field along the rotating surface; and the magnet. A position detection magnet rotor magnetized at one end of the rotor and first and second magnetoelectric transducers face the magnetic poles of the position detection magnet rotor, and both are arranged at an electrical angle. First and second integrated circuits fixed to the fixed armature side so as to be separated from each other by a set angle, and the magnetic poles of the first and second integrated circuits and the position detection magnet rotor and field magnet rotation. means for adjusting the relative angular phase of the three child magnetic poles and setting the relative positions of the three so that the average value of each of the back electromotive forces induced in the armature coil becomes the maximum value; A three-phase electric motor driven by an integrated circuit, characterized by comprising: (6) In a three-phase semiconductor motor, there is a fixed armature equipped with a three-phase armature coil, a rotating shaft rotatably supported by a bearing provided on the fixed armature, and a rotating shaft centered on the rotating shaft. A field magnet rotor equipped with field magnetic poles in which the parts are fixed and rotate synchronously, and magnetic flux penetrates the armature coil to generate driving torque, and a position detection rotor that rotates synchronously adjacent to the rotor. a magnetic rotor, and a magnetic pole band provided along the circumferential direction of the magnetic rotor, in which N and S magnetic pole portions and non-magnetic field portions each having a width of approximately 120 degrees in electrical angle are sequentially arranged; A first magnetoelectric transducer that faces the magnetic pole band and obtains a position detection output, and a position detection output that is obtained when the magnetoelectric transducer faces the above-mentioned N and S magnetic poles and the non-magnetic field part. , approximately 120 in electrical angle
The first, second, and third position detection signals adjacent to each other are obtained in sequence with a width of 1.5 degrees, and the first, second, and third NPN type transistors are made conductive by using these position detection signals as base inputs. and the second magnetoelectric conversion element include the above-mentioned N
, the position detection output obtained when facing the S magnetic pole and the non-magnetic field section, the fourth, fifth, and sixth position detection signals adjacent to each other in sequence with a width of approximately 120 electrical degrees are obtained. A fourth, which is conducted as a base input with a position detection signal such as
an electric circuit including fifth and sixth NPN transistors;
First magnetoelectric conversion element and first, second,..., sixth NPN
An integrated circuit that integrates electric circuits including type transistors,
first and second armature coils of the first phase bi-furl wound; second and third armature coils of the second phase bi-furl wound; and fifth armature coils of the third phase bi-furl wound;
The sixth armature coil and the first, third, and fifth armature coils are energized by a DC power supply via the first, second, and third NPN transistors, respectively, and the second and fourth
, the sixth armature coil is connected to the fourth, fifth, and sixth N
The second magnetoelectric conversion element and the first, second,...
, an electric circuit in which the sixth armature coil is an external component of the integrated circuit, and a gap between the fixed armature and the first and second magnetoelectric transducers facing the magnetic poles of the position detection magnet rotor; (60+120n) electrical degrees...n is a positive integer including zero...means for arranging and fixing them apart from each other;
By adjusting the relative angle phase between the magnetic poles of the second magnetoelectric conversion element and the field magnet rotor and the magnetic poles of the position detection magnet rotor, the average value of the back electromotive force in the energized section of each armature coil is adjusted. A three-phase electric motor driven by an integrated circuit, comprising means for setting the relative positions of the magnetic poles of both rotor magnets so as to reach a maximum value. (7) In a three-phase semiconductor motor, there is a fixed armature equipped with a three-phase armature coil, a rotating shaft rotatably supported by a bearing provided on the fixed armature, and a rotating shaft centered on the rotating shaft. A field magnet rotor equipped with field magnetic poles in which the parts are fixed and rotate synchronously, and magnetic flux penetrates the armature coil to generate driving torque, and a position detection rotor that rotates synchronously adjacent to the rotor. a magnetic rotor, and a magnetic pole band provided along the circumferential direction of the magnetic rotor, in which N and S magnetic pole portions and non-magnetic field portions each having a width of approximately 120 degrees in electrical angle are sequentially arranged; One magnetoelectric transducer that faces the magnetic pole band and obtains a position detection output, and the position detection output that is obtained when the magnetoelectric transducer faces the above-mentioned N and S magnetic poles and the non-magnetic field part. 12 in the corner
The first, second, and third position detection signals that are adjacent to each other in sequence with a width of 0 degrees are obtained, and the first, second, and third NPN types are conducted using these position detection signals as base inputs. an electric circuit including a transistor; first and second armature coils of a first phase bi-alternatively wound; third and fourth armature coils of a second phase bi-alternatively wound; fifth and sixth armature coils of three phases;
The first, second, . a control circuit that obtains the base inputs of the fourth, fifth, and sixth transistors and makes them conductive using the back electromotive force (generating power) of the armature coil; an electrical circuit including first, second, and third transistors; and a fourth,
An integrated circuit that integrates a control circuit including fifth and sixth transistors and has first, second, ..., sixth armature coils as external components, and a magnetoelectric conversion element in the gap between the fixed armature. The integrated circuit is fixed to the fixed armature side so as to face the magnetic pole surface of the position detection magnet, and the relative angular phase between the magnetic poles of the field magnet rotor and the magnetic pole of the position detection magnet rotor is adjusted. Then, so that the average value of the back electromotive force in each energized section of each armature coil becomes the maximum value,
A three-phase electric motor driven by an integrated circuit, comprising means for setting the relative positions of magnetic poles of both rotor magnets.