RU2066085C1 - Detector of angular position and rotation speed of rotor - Google Patents

Abstract

FIELD: gate electric motors. SUBSTANCE: rotation measuring winding with phases 6 and 7 is designed as tooth-pole. Coils of each phase in range of pole separation are connected in groups in series aiding, while coils of phases which are in adjacent poles are connected in series opposing. In addition stator magnetic circuit 1 has primary winding 3 and two phases 4 and 5 of secondary winding. Detector rotor is designed as permanent magnet. EFFECT: simplified manufacturing for automatic production, increased level of output signals. 6 cl, 5 dwg

Description

 The invention relates to electrical engineering, to electric machines of low power and can be used in valve electric motors (VD).

 Known pulse sensor and tachogenerator in the valve machine (application Germany N 2311954, CL N 02 K 29/04, 1976), which contain a common gearless winding rotor, and the gear stator magnetic circuit is divided around the circumference into parts in which either primary and secondary windings of the sensor, or an alternating current winding and a tachogenerator excitation winding.

The disadvantages of this sensor are:
limited functionality due to the inability to receive an analog signal from a position sensor by the angle of rotation;
the complexity of the manufacture of the sensor due to the need for winding different in design windings of the sensor and tachogenerator.

 It is also known a control device for a non-contact direct current motor (ed. St. N 471639, class N 02 K 29/14, 1973), containing a magnetoelectric speed sensor and rotor position sensor, located in one magnetic casing.

The disadvantages of this device are:
the inability to obtain an analog signal of the rotor position sensor;
the complexity of the design of the magnetic circuit;
low mass and dimensional characteristics of the device, especially when performing a multiphase design.

 Closest to the invention is a sensor of the angular position and frequency of rotation of the rotor (ed. St. USSR N 1690111, class N 02 K 29/14, 1991), which contains a rotor with excitation from a permanent magnet, a stator, on the teeth of the magnetic circuit which is placed tachometric winding, on the sections of the stator magnetic circuit, configured to saturate the field of the permanent magnet, the windings of the rotor position sensor are located. The primary winding of the rotor position sensor is made according to the "tooth-pole" type with an in-series connection of the coils of adjacent teeth of the stator magnetic circuit, forming the poles of the high-frequency excitation system. Each phase of the secondary winding of the rotor position sensor is composed of an even number of serially-counter-connected coils, covering the same number of poles of the high-frequency excitation system within the pole division of the rotor, the tachometric winding is made in the form of coils shifted by the pole division of the rotor. The pitch of the tachometric winding is 2n times the step of the secondary winding of the position sensor, where n is any integer. The air gap in the sensor between the stator and the rotor exceeds at least three times the air gap between the splines of the stator teeth. The stator magnetic circuit can be made of two halves arranged coaxially with the rotor with axial displacement with respect to each other. On one of the magnetic circuits there are placed coils of the rotor position sensor windings, and on the other coils of a tachometric winding made as a tooth-pole type with the number of teeth per pole and a phase equal to one.

 The disadvantage of this sensor is the low manufacturability due to the need for manual winding of windings with small diameters; limited functionality due to the inability to control the phase of the output voltage of the rotor position sensor.

 The technical result of the invention is to improve manufacturability with automated winding, to increase the amplitude of the output signals of the position sensor and tachogenerator; in expanding functionality by adjusting the phase of the output voltage of the sensor; in improving accuracy by reducing the tooth pulsations of the output voltage of the tachogenerator and the output signals of the rotor position sensor.

 This problem can be solved due to the fact that in the sensor of the angular position and frequency of rotation of the rotor containing the rotor with excitation from a permanent magnet, the stator, on the teeth of the magnetic circuit of which there is a tachometric winding, are located on the sections of the magnetic circuit that are capable of saturating the field of the permanent magnet, windings of the rotor position sensor, the primary winding of the rotor position sensor is made according to the "tooth-pole" type with a counter-series connection of the coils of adjacent teeth of the stator magnetic circuit forming the poles of the high-frequency excitation system, and each phase of the secondary coil of the rotor position sensor is composed of an even number of counter-connected coils in series, covering the same number of poles of the high-frequency excitation system within the rotor pole division, the tachometric winding is made in the form of coils shifted by the pole division of the rotor, according to the type of "tooth-pole", the coils of each phase of the tachometric winding within the pole division are connected in groups in series according to each phase of the tachometric winding, located within the adjacent pole divisions, are interconnected in series and counter.

 In addition, the teeth of the stator magnetic circuit are made with slots along the outer diameter, and on the side of the internal diameter, the stator magnetic circuit is made smooth.

 The difference of the invention also lies in the fact that the teeth of the magnetic circuit along the outer diameter are covered by a closed ring of soft magnetic material.

 In addition, the stator can be equipped with a second magnetic circuit, made similarly to the first magnetic circuit, with each phase of the secondary winding of the rotor position sensor located on one of the stator magnetic circuits shifted relative to the corresponding phase of the secondary winding of the rotor position sensor located on the other stator magnetic circuit by 90 el . degrees, and the corresponding phases of the secondary windings of the position sensor of the rotor of the stator magnetic circuits are interconnected in series, the tachometric windings of the magnetic circuits are interconnected via an inserted diode rectifier. The stator magnetic cores are coaxial, and the permanent rotor magnets are installed between them.

 The difference of the invention lies in the fact that one of the stator magnetic circuits can be installed with the possibility of rotation around the axis of the rotor by an angle α ≅ 180 el. degrees.

 In addition, at least one of the stator magnetic circuits may have an additional “tooth-pole” type winding, the coils of which within the limits of the pole division of the rotor are connected in series according to, and the groups of coils of the additional winding located within adjacent pole divisions, interconnected sequentially, and the beginning of the additional winding is combined with the beginning of one of the phases of the secondary winding of the rotor position sensor.

 In FIG. 1 shows a linear scan of the sensor of the angular position of the rotor and speed, and diagrams explaining the principle of operation of the sensor; in FIG. 2 linear scan of the sensor magnetic circuit with slots on the outer diameter; in FIG. 3 is a linear scan of the stator magnetic cores arranged coaxially with respect to each other, with the arrangement of permanent rotor magnets between the inner diameter of the outer magnetic circuit and the outer diameter of the inner magnetic circuit; in FIG. 4 a linear scan of the magnetic circuit, covered by the outer diameter of a ring of soft magnetic material; in FIG. 5 curves of the output voltage of one of the phases of the position sensor with an angular shift of the magnetic cores relative to each other.

 The sensor of the angular position and frequency of rotation of the rotor contains the magnetic circuit of the stator 1 and the rotor 2 with excitation from a permanent magnet. On the teeth of the magnetic circuit of the stator 1 there is a tachometric winding (first phase 6 and second phase 7), made on the basis of the "tooth-pole" type. The specified winding is made in the form of coils displaced by the pole division of the rotor. On sections of the stator magnetic circuit, made with the possibility of saturating the field of the permanent magnet, the windings of the rotor position sensor are located: primary winding (field winding) 3, made as a "tooth-pole" with an in-series connection of the coils of adjacent teeth of the stator magnetic circuit, forming the poles of the excitation system high frequency; phases 4, 5 of the secondary winding of the rotor position sensor, and each phase 4 (5) of the secondary winding of the sensor is composed of an even number of serially-counter-connected coils, covering the same number of poles of the high-frequency excitation system within the pole division of the rotor.

 The coils of each phase 6 (7) of the tachometric winding within the pole division are connected in series according to, and the coils of each phase of the specified winding located within the adjacent pole divisions are connected in series.

 According to the invention, the teeth 9 (Fig. 2) of the magnetic circuit are made with slots along the outer diameter, and on the side of the internal diameter the magnetic circuit of the stator is smooth.

 In addition, the teeth of the magnetic circuit along the outer diameter can be covered by a ring 8 (Fig. 1, 4).

 The sensor of the angular position and rotor speed works as follows.

и в рассматриваемом случае (фиг. 1) равно двум зубцам статора. Первая (синусная) фаза 4 с выводами Н2, К2 вторичной (выходной) обмотки уложена на одноименных полюсных зубцах, в данном случае на северных, т. е. а, с, а^I, c^I. Катушки, намотанные на указанных зубцах, включены последовательно и встречно по фазе. Аналогично уложена вторая (косинусная) фаза 5 выходной обмотки с выводами Н3, К3 датчика на южных полюсах b, d, b^I, d^I. Если ось магнитного ротора тахометрического датчика расположится под серединой зубца b, то на выходе первой (синусной) фазы 4 вторичной обмотки будет нулевой сигнал U_a (фиг. 1), а на выходе второй (косинусной) фазы 5 вторичной обмотки сигнал U_b будет максимальный. Это обусловлено тем, что магнитный поток (или индукция В), создаваемые постоянным магнитом ротора 2, изменяют магнитное состояние зубчатой системы статора 1 датчика, при этом происходит подмагничивание зубцов вплоть до насыщения. Величина сигнала фаз 4 и 5 вторичной обмотки зависит от значения индукции, развиваемой постоянным магнитом ротора, и ширины зубца статора тахометрического датчика положения. В рассматриваемом положении ротора, когда ось магнитного потока датчика располагается под серединой зубцов b и b^I, магнитное состояние зубцов а, с, и а^I, c^I будет одинаковым и потокосцепление синусной обмотки с обмоткой 3 возбуждения на каждом из зубцов а, с, а^I, c^I будет также одинаковым. Поскольку катушки на зубцах а, с и а^I, c^I включены между собой встречно и имеют одинаковое количество витков, то выходной сигнал будет равен нулю. Иллюстрацией этого положения служит фиг. 5в. Перемещение ротора датчика по расточке будет приводить к модуляции магнитного состояния зубчатой системы статора 1 (фиг. 1,а) датчика, и при синусоидальной форме индукции В в зазоре (фиг. 1, б) сигнал U_а огибающей датчика положения имеет синусоидальную форму. При этом частота огибающей выходного напряжения U (фиг. 1, в) в два раза больше частоты волны магнитного потока постоянного магнита ротора.When a high-frequency voltage is applied to winding 3 with terminals N1, K1, current flows through the winding and a system of alternating poles is formed on the stator toothed magnetic circuit 1, for example, a tooth a north pole, b south pole, c north, d south, etc. against the teeth a ', b', c ', d'. The shape of the supply voltage for the inventive sensor is not critical and may be rectangular. The flow of the field winding 3 is closed along the magnetic circuit 1 and ring 8. Pole division of the sensor

and in the case under consideration (Fig. 1) is equal to two stator teeth. The first one (sine) phase 4 with pin H2, K2 secondary (output) winding is stacked on the pole teeth of the same name, in this case in the northern, t. E. A, c, and ^I, c ^I. Coils wound on these teeth are connected in series and counter-phase. The second (cosine) phase 5 of the output winding with the terminals H3, K3 of the sensor at the south poles b, d, b ^I , d ^{I is} similarly laid. If the magnetic rotor axis tachometric sensor located under the middle of the tooth b, then the output of the first (sine) phase 4 of the secondary winding is zero signal U _a (FIG. 1), and the output of the second (cosine) phase 5 the secondary winding of the signal U _b is the maximum . This is due to the fact that the magnetic flux (or induction B) created by the permanent magnet of the rotor 2 changes the magnetic state of the gear system of the sensor stator 1, while the teeth are magnetized up to saturation. The magnitude of the signal of phases 4 and 5 of the secondary winding depends on the value of the induction developed by the permanent magnet of the rotor and the width of the stator tooth of the tachometric position sensor. In this position of the rotor when the magnetic sensor flux axis is located under the middle of the teeth b and b ^I, the magnetic state of the teeth a, c, and ^I, c ^I is the same and the flux linkage sine winding with a winding 3 excitation at each of the teeth a, c, and ^I , c ^I will also be the same. Since the coils on the teeth a, c, and a ^I , c ^I are connected in the opposite direction and have the same number of turns, the output signal will be zero. FIG. 5c. Moving the sensor rotor along the bore will modulate the magnetic state of the gear system of the stator 1 (Fig. 1, a) of the sensor, and with a sinusoidal shape of induction B in the gap (Fig. 1, b), the signal U _{and the} envelope of the position sensor has a sinusoidal shape. The frequency of the envelope of the output voltage U (Fig. 1, c) is two times higher than the frequency of the wave of the magnetic flux of the permanent magnet of the rotor.

Similarly, the output voltage U of the second cosine phase of the output winding is formed (Fig. 1, d). For the case considered above, when the axis of the magnetic flux of the sensor rotor is under the middle of teeth b, b ^I , teeth b and b ^I have minimum magnetic conductivity, and teeth d and d ^I have maximum magnetic conductivity, since the flux of a permanent magnet through the teeth is minimal. The switching circuit of the second (cosine) phase 5 of the output winding is similar to the output sinus winding 4 and the voltage U on the cosine winding will be maximum, since the EMF induced in the coils located on the teeth d and d ^I is maximum, and in the coils located on the teeth b , b ^I , is minimal. The movement of the rotor 2 along the bore modulates the envelope of the output voltage of a double frequency compared to the frequency of the magnetic flux wave of the permanent magnet of the rotor (Fig. 1, b). The shape of the envelope of the output voltage of the cosine winding is shown in FIG. 5g By changing the magnitude of the induction B in the gap or the width of the teeth, you can change the maximum value of the output voltage of the rotor position sensor.

и в рассматриваемом случае равно четырем зубцам статора 1. Поэтому катушки первой фазы 6 тахометрической обмотки для рассматриваемого варианта расположены на двух зубцах (в данном случае а и b) в пределах полюсного деления. В катушках, расположенных на зубцах а и b, наводится ЭДС высокой частоты ввиду их магнитной связи с катушками обмотки возбуждения 3, расположенных на тех же зубцах. Поскольку полярность потоков в зубцах а и b противоложная, а катушки первой фазы 6 тахогенераторной обмотки, расположенные на тех же зубцах, соединены последовательно, суммарная ЭДС высокой частоты в них будет равна нулю. Аналогичные процессы происходят в катушках обмотки 6, расположенных на зубцах а^I и b^I. Встречное соединение групп катушек на зубцах (а, b) и (а^I, b^I) приводит к суммированию наводимых в них ЭДС вращения. Вторая фаза 7 тахометрической обмотки выполнена аналогично первой фазе 6 и расположена на зубцах с, d и c^I, d^I магнитопровода 1. С тахометрической обмотки (6, 7) снимается сигнал ЭДС вращения, амплитуда которого определяется числом витков, потоком в зазоре и частотой вращения ротора.Pole division of the tachometric winding

and in the case under consideration it is equal to four teeth of stator 1. Therefore, the coils of the first phase 6 of the tachometric winding for the considered option are located on two teeth (in this case, a and b) within the pole division. In the coils located on the teeth a and b, a high frequency EMF is induced due to their magnetic coupling with the field coil 3 located on the same teeth. Since the polarity of the flows in the teeth a and b is opposite, and the coils of the first phase 6 of the tachogenerator winding located on the same teeth are connected in series, the total high-frequency emf in them will be zero. Similar processes occur in the coils of the winding 6 disposed on the teeth and ^I and b ^I. The counter-connection of the groups of coils on the teeth (a, b) and (a ^I , b ^I ) leads to the summation of the rotation emf induced in them. The second phase 7 of the tachometric winding is made similar to the first phase 6 and is located on the teeth c, d and c ^I , d ^{I of the} magnetic circuit 1. From the tachometric winding (6, 7), a rotation EMF signal is removed, the amplitude of which is determined by the number of turns, the flow in the gap and the frequency rotor rotation.

The tachometric winding signals U _a , U _b are shown in FIG. 5d Thus, sinusoidal and cosine signals are formed on the output windings 4, 5, the amplitude of which does not depend on the shaft rotation frequency (Fig. 1 c, d), and on phases 6, 7 of the tachometric winding a signal whose amplitude is proportional to the shaft rotation frequency (Fig. . 1, d).

 According to the invention, the sensor stator can be made with two magnetic cores 10, 11 (Fig. 3), each of which has identical field windings and output sensor windings, and the series connection of the corresponding phases of the output windings located on different magnetic cores makes it possible to adjust the phase of the output sensor signal. In this case, one of the magnetic cores, for example 10, in FIG. 3 are rotated relative to the other (11) around the axis of the rotor by an angle of 90 el. degrees.

In FIG. 5a shows curves of the envelope of the output voltages of the sensor U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{ten}}$ , U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{eleven}}$ envelopes of the first phases of the output windings located on the magnetic circuits 10 and 11, respectively, U _{I is the} resulting voltage of the first phase of the sensor, equal to the sum of the voltages U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{ten}}$ , U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{eleven}}$ since the windings are connected in series. The second phases of the output windings located on the magnetic circuits 10 and 11 are connected in a similar way. The regulation of the magnitude of the excitation voltage of one of the windings, for example, on the magnetic circuit 10, leads to a change in the amplitude of the corresponding output voltage / U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{ten}}$ /, which, in turn, leads to a change in the phase of the voltage U _I. A similar change in the phase of the output voltage occurs in the second phase of the sensor. The range of the phase change of the sensor output signal is 90 el. degrees. Indeed, at zero excitation voltage of the winding of the magnetic circuit 10, the voltage U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{ten}}$ = 0, and U _I = U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{eleven}}$ . At zero excitation voltage of the winding of the magnetic circuit 11 voltage U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{eleven}}$ = 0, and U _I = U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{ten}}$ . With the same excitation voltages, the phase of the output signal U _I is 45 el. degrees (as in Fig. 5, a).

 Thus, the proposed design of the sensor allows you to adjust the phase of the output signal, which expands the functionality and scope of the sensor.

The phase control of the sensor output signal can also be carried out by mechanical rotation of one of the magnetic cores (for example, 11, in Fig. 2). In this case, the excitation voltage of each of the sensor excitation windings can remain unchanged. In FIG. 5b shows envelope curves of the output voltage of one of the sensor phases. The designations are the same as in FIG. 6 a. When mixing the magnetic cores 10 and 11 relative to each other at an angle of 90 el. degrees (U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{ten}}$ and U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{eleven}}$ in FIG. 5, b) the output voltage of the sensor is a curve U _I. With a zero angular displacement of the magnetic cores 10 and 11 relative to each other, the output voltage of the sensor is a doubled in amplitude sinusoidal signal of one of the output windings / U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{ten}}$ + U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{(eleven)}}$ /. With an increase in the angle of displacement of more than 90 el. degrees the amplitude of the output voltage of the sensor / U _I / decreases. To exclude galvanic coupling between tachometric windings located on the magnetic circuits 10, 11, their connection is carried out through the introduced diode rectifier (not shown in Fig. 2). On one of the stator magnetic circuits of the sensor stator, an additional winding 13 can be placed, which is made as a “pole-pole” like one of the phases of the tachometric winding, therefore, the formation of the output signal of the additional winding 13 (Fig. 1) occurs similarly to the formation of the output signal of phases 6, 7 tachometric winding. The beginning H6 of the additional winding 13 is combined with the beginning of the H3 phase 5 of the output winding. In this case, the transition through zero of the voltage of the additional winding 13 (Fig. 5e) occurs at a point close to the maximum signal of phase 5 of the output winding of the sensor (Fig. 5c). If the beginning of H6 of the additional winding 13 is combined with the beginning of H2 of phase 4 of the output winding (Fig. 1), then the zero voltage of the additional winding 13 would go through zero at a point close to the maximum signal of the phase 4 of the sensor output winding. Thus, in the rotation mode, it became possible to synchronize spatially simultaneously the signal of the additional winding 13 and the output winding of the sensor.

The shape of the envelope of the output voltage of the sensor (Fig. 1 c, d) is ultimately determined by the law of distribution of magnetic induction in the air gap. With a small number of poles of the sensor rotor, the distribution of the induction curve in the air gap for a round magnet without pole tips differs from a sinusoidal one and approaches a trapezoidal one, which leads to a loss of sensor accuracy. The location of identical windings (excitation and output windings of the sensor) on two magnetic circuits 10 and 11, one of which 11 relative to the other 10 can rotate around the axis of the rotor by an angle of up to 180 el. degrees, and the serial connection of the corresponding phases of the output windings of the sensor located on different magnetic circuits increases the accuracy of the sensor when the distribution law of the induction in the air gap deviates from the sinusoidal one. In FIG. 1c shows the envelopes of the output voltage of one of the sensor phases: U $\genfrac{}{}{0ex}{}{\text{/ I /}}{\text{ten}}$ envelope of the output voltage of the first phase located on the magnetic circuit 10, U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{eleven}}$ envelope of the output voltage of the first phase located on the magnetic circuit 11, U _{I the} resulting curve of the sensor output voltage obtained by adding the voltage U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{ten}}$ and U $\genfrac{}{}{0ex}{}{\text{(I)}}{\text{eleven}}$ when connecting the respective windings in series.

When adding trapezoidal signals shifted, for example, by 60 el. degrees (Fig. 1 c), the resulting voltage curve U _{I is} obtained, in which there is no third harmonic. The ability to rotate one magnetic circuit relative to another makes it possible to obtain an envelope of the output voltage of the sensor of the desired shape or with a minimum content of higher harmonics, which ultimately increases the accuracy of the sensor.

 The implementation of the sensor magnetic circuit with slots along the outer diameter (9, 10, 11, 12) in combination with the windings of the sensor and the tine-pole type tachogenerator allows not only to fully automate the winding process, but also to increase the amplitudes of the output signals of the sensor and tachogenerator. This is due to the fact that with manual winding, the average coil winding length is longer than with winding on a machine, and the groove fill factor is less. Thus, with a fixed groove area during automated winding, it is possible to lay more turns of the output windings of the sensor and tachogenerator with a slight increase in active resistance than with manual laying.

 The implementation of the magnetic cores 10, 11 (Fig. 3), located coaxially with respect to each other, reduces the axial length of the sensor, the volume of the permanent magnet, and therefore the mass and overall dimensions of the entire device, while one of the magnetic cores (for example, 10) can rotate around the axis of the rotor of the magnetic circuit 11. The principle of operation of the sensor, the magnetic system of which is made, as in FIG. 3 does not differ from the principle of operation of the sensor described above.

 Performing a stator magnetic circuit without splines allows to exclude tooth pulsations in the output voltage curves of the sensor and tachogenerator, which increases its accuracy. In addition, the magnetic connection between the stator and the rotor is excluded by the high-frequency flows generated by the excitation winding 3 of the sensor, since these flows are closed inside the stator magnetic circuit without penetrating into the air gap between the stator and the rotor. Therefore, the magnetic state of the teeth of the magnetic circuit changes only under the influence of the constant magnet flux of the sensor rotor 2 and does not depend on the change in the magnetic conductivity of the air gap between the stator magnetic circuit and the rotor. This makes the design of the sensor non-critical to the size of the air gap, thereby more technological in manufacturing.

 Introduction to the design of the sensor of the additional winding 13 allows for spatio-temporal synchronization of the output signals of the additional and output windings of the sensor, expands the functionality of the sensor and allows its use in systems requiring a reference sensor, for example, in electronic ignition systems of internal combustion engines of automobiles.

 The sensor of the angular position and rotor speed can be used in valve motors with positional modulation of phase voltages, in positional electric drives as a position and speed sensor, in automation systems as a rotation sensor, where information is required on the rate of rotation of the object (i.e. speed, acceleration and angle). YYY2 YYY4

Claims (7)

 1. The sensor of the angular position and frequency of rotation of the rotor, containing a rotor with excitation from a permanent magnet, a stator, on the teeth of the magnetic circuit of which a tachometric winding is placed, on the sections of the magnetic circuit configured to saturate the field of the permanent magnet, the windings of the rotor position sensor are located, the primary winding of the position sensor the rotor is made as a pole-tooth type with an in-series connection of the coils of adjacent teeth of the stator magnetic circuit, forming the poles of the excitation system high often you, and each phase of the secondary winding of the rotor position sensor is composed of an even number of serially-counter-connected coils, covering the same number of poles of the high-frequency excitation system within the pole division of the rotor, the tachometric winding is made in the form of coils shifted by the pole division of the rotor, characterized in that the tachometric winding is made like a pole-tooth, the coils of each phase of the tachometric winding within the pole division are connected in groups in series according to the coils of each phase of the tachometric winding, located within the adjacent pole divisions, are interconnected in series with each other.  2. The sensor according to claim 1, characterized in that the teeth of the stator magnetic circuit are made with slots along the outer diameter, and on the side of the internal diameter the magnetic circuit of the stator is smooth.  3. The sensor according to claim 1 or 2, characterized in that the teeth of the magnetic circuit along the outer diameter are covered by a closed ring of soft magnetic material.  4. The sensor according to claim 1, 2, or 3, characterized in that the stator is equipped with a second magnetic circuit, made similarly to the first magnetic circuit, with each phase of the secondary winding of the rotor position sensor located on one of the stator magnetic circuits offset from the corresponding phase of the secondary winding rotor position sensor located on another stator magnetic circuit, 90 el. hail. moreover, the corresponding phases of the secondary windings of the position sensor of the rotor of the stator magnetic circuits are interconnected in series, the tachometric windings of the magnetic circuits are interconnected via an inserted diode rectifier.  5. The sensor according to claim 1, or 2, or 3, or 4, characterized in that the stator magnetic circuits are coaxial, and the permanent rotor magnets are installed between them.  6. The sensor according to claim 1, or 2, or 3, or 4, or 5, characterized in that one of the stator magnetic circuits is mounted with the possibility of rotation around the rotor axis by an angle α ≅ 180 el. hail.  7. The sensor according to claim 1, or 2, or 3, or 4, or 5, or 6, characterized in that at least one of the stator magnetic circuits has an additional pole-type winding, the coils of which are connected within the rotational division of the rotor into groups sequentially according to, and groups of coils of the additional winding located within adjacent pole divisions are interconnected in series, the beginning of the additional winding being combined with the beginning of one of the phases of the secondary winding of the rotor position sensor.

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