A multi-pole rotary transformer stator and rotor winding detection device and a detection method thereof

Abstract

The application provides a multi-pole rotary transformer stator and rotor winding detection device and a detection method thereof, and aims to solve the technical problems that the traditional Gauss meter probe can affect the magnetic field interpretation and cause misjudgment and cannot quickly and accurately detect the winding wire embedding accuracy. The stator winding detection device provided by the application comprises a detection base, a stator magnetic conducting ring and a detection circuit; the stator magnetic conducting ring is provided with a first linear Hall and a second linear Hall with a position difference of 180 degrees of electrical angle. The method loads a direct current to the stator winding through the detection circuit; the stator winding is continuously rotated, when the output voltage of the detection circuit remains stable, the stator winding is correctly wound; when the output voltage of the detection circuit jumps, the stator winding is incorrectly wound, and the position of the incorrectly wound stator winding is determined according to the output position of the jump of the output voltage of the detection circuit. The rotor winding detection device and the detection method are similar.

Description

TECHNICAL FIELD

[0001] The present application relates to winding detection device, specifically to a kind of multi-pole rotary transformer stator, rotor winding detection device and its detection method. BACKGROUND

[0002] Multi-pole rotary transformer winding is a kind of high-precision high-reliability angle sensor, widely used in precision and reliability have high requirements servo rotary mechanism, with very high product value.Multi-pole rotary transformer winding has the characteristics of many kinds, complex structure, winding embedding is the core process of multi-pole rotary transformer production, operation is tedious and time-consuming, it is difficult to complete mechanical embedding by using automatic device, need to rely on manual embedding, prone to coil reverse error problem, cause multi-pole rotary transformer precision greatly reduced.In order to reduce human error, usually use winding to pass direct current, with gauss meter to check winding polarity method for winding detection.But multi-pole rotary transformer magnetic field is weak, gauss meter probe placement position has great influence on magnetic field interpretation, easy to produce misjudgment, unable to quickly and accurately detect winding embedding accuracy. SUMMARY

[0003] The present application aims to solve the technical problems that traditional gauss meter probe can affect magnetic field interpretation and produce misjudgment and cannot quickly and accurately detect winding embedding accuracy, and provides a kind of multi-pole rotary transformer stator, rotor winding detection device and its detection method.

[0004] In order to achieve the above-mentioned application purpose, the technical solution provided by the present application is:

[0005] A kind of multi-pole rotary transformer stator winding detection device, which is characterized by,

[0006] Including detection base, stator magnetic conducting ring and detection circuit;

[0007] The first linear hall and the second linear hall are arranged on the stator magnetic conducting ring, and the first linear hall and the second linear hall are located at 180° electrical angle apart;

[0008] The stator magnetic conducting ring is installed on the detection base, coaxially sleeved in the stator for detection, and forms a uniform air gap space;The detection circuit is connected with the first linear hall, the second linear hall and the stator winding by wire, and the first linear hall and the second linear hall are connected in series.

[0009] The present application further provides a kind of detection method of multi-pole rotary transformer stator winding detection device, which is characterized by, comprising the following steps:

[0010] 1】the stator winding to be detected is installed on the detection base with the stator, and is coaxially sleeved outside the stator magnetic conducting ring;

[0011] 2】load direct current to the stator winding by detection circuit;

[0012] 3】Continuous rotation of the stator winding, when the detection circuit output voltage remains stable, the stator winding is wound correctly; when the detection circuit output voltage produces a jump, the stator winding is wound incorrectly, and the position of the error winding of the stator winding is determined according to the jump output position of the detection circuit output voltage.

[0013] The application also provides a multi-pole rotary transformer rotor winding detection device, which is characterized in that,

[0014] The detection device comprises a detection base, a rotor magnetic conducting ring and a detection circuit.

[0015] The rotor magnetic conducting ring is provided with a third linear Hall and a fourth linear Hall, and the third linear Hall and the fourth linear Hall are located at an electrical angle of 180° apart.

[0016] The rotor magnetic conducting ring is mounted on the detection base and coaxially sleeved outside the rotor to form a uniform air gap space during detection; the detection circuit is connected with the third linear Hall, the fourth linear Hall and the rotor winding through wires, and the third linear Hall and the fourth linear Hall are connected in series.

[0017] The application also provides a detection method of the multi-pole rotary transformer rotor winding detection device, which is characterized in that, comprising the following steps:

[0018] 1】The rotor winding to be detected is mounted on the detection base with the rotor and is sleeved inside the rotor magnetic conducting ring;

[0019] 2】The rotor winding is loaded with a direct current by the detection circuit;

[0020] 3】The rotor winding is continuously rotated, when the detection circuit output voltage remains stable, the rotor winding is wound correctly; when the detection circuit output voltage produces a jump, the rotor winding is wound incorrectly, and the position of the error winding of the rotor winding is determined according to the jump output position of the detection circuit output voltage.

[0021] The application has the following beneficial effects:

[0022] 1】The multi-pole rotary transformer stator winding detection device can effectively troubleshoot manual wire embedding errors and reduce the misjudgment risk of manual detection by arranging the first linear Hall and the second linear Hall at an electrical angle of 180° on the stator magnetic conducting ring and connecting the first linear Hall, the second linear Hall and the stator winding through the detection circuit for detection.

[0023] 2】The multi-pole rotary transformer stator winding detection device can locate the error stator winding position according to the fluctuation of the output voltage of the first linear Hall and the second linear Hall, correct the coil error problem in time, improve the product qualification rate and reduce the repair cost.

[0024] 3. The application provides a kind of multi-pole rotary transformer stator winding detection method, utilize a bilinear Hall detection scheme, i.e. first linear Hall and second linear Hall are placed in air gap magnetic field according to 180 ° electrical angle, sensitive multi-pole rotary transformer a pair of pole differential magnetic field changes, confirm the correctness of stator winding embedding wire through the change of output signal, and locate error stator winding position.

[0025] 4. The application provides a kind of multi-pole rotary transformer rotor winding detection device, by setting the third linear Hall and fourth linear Hall of 180 ° electrical angle placement on rotor magnetic conducting ring, and by third linear Hall, fourth linear Hall and rotor winding are connected and detected by detection circuit, can effectively investigate artificial embedding wire error, reduce the misjudgment risk of artificial detection.

[0026] 5. The application provides a kind of multi-pole rotary transformer rotor winding detection device, according to the fluctuation of third linear Hall and fourth linear Hall output voltage, can locate error rotor winding position, timely correct coil error problem, improve product qualification rate, reduce repair cost.

[0027] 6. The application provides a kind of multi-pole rotary transformer rotor winding detection method, utilize a bilinear Hall detection scheme, i.e. third linear Hall and fourth linear Hall are placed in air gap magnetic field according to 180 ° electrical angle, sensitive multi-pole rotary transformer a pair of pole differential magnetic field changes, confirm the correctness of rotor winding embedding wire through the change of output signal, and locate error rotor winding position. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 it is the schematic diagram of stator winding detection device of the application;

[0029] Figure 2 it is the schematic diagram of rotor winding detection device of the application;

[0030] Figure 3 it is the direct current magnetic field distribution diagram of multi-pole rotary transformer stator winding of the application;

[0031] Figure 4 it is the schematic diagram of detection circuit output signal of the application.

[0032] Figure legend: 1-detection base, 2-stator winding, 3-stator magnetic conducting ring, 4-first linear Hall, 5-second linear Hall, 6-detection circuit, 7-rotor winding, 8-rotor magnetic conducting ring, 9-third linear Hall, 10-fourth linear Hall. DETAILED DESCRIPTION

[0033] To make the advantages and characteristics of the application more clear, the application is further detailed below in conjunction with the drawings and specific embodiments.

[0034] As Figure 1 shown, a multi-pole rotary transformer stator winding detection device includes a detection base 1, a stator magnetic conducting ring 3, and a detection circuit 6. The stator magnetic conducting ring 3 is used to reduce the rotary transformer magnetic circuit reluctance, enhance the rotary transformer DC magnetic field, improve the air gap magnetic density, and increase the magnetic field change range when the multi-pole rotary transformer stator winding rotates. The stator magnetic conducting ring 3 is pasted with a first linear Hall 4 and a second linear Hall 5, which are arranged with an electrical angle difference of 180° (360 / 4p) and are used to sense the change of a pair of differential magnetic fields of the multi-pole rotary transformer. The stator magnetic conducting ring 3 is installed on the detection base 1 and is coaxially sleeved inside the stator to form a uniform air gap space. The detection circuit 6 is connected to the first linear Hall 4, the second linear Hall 5, and the stator winding 2 through wires, and the first linear Hall 4 and the second linear Hall 5 are connected in series to provide the required power supply for the stator winding 2, the first linear Hall 4, and the second linear Hall 5, and to provide an output node for signal collection.

[0035] A detection method of a multi-pole rotary transformer stator winding includes the following steps:

[0036] 1】Install the stator winding 2 to be detected on the detection base 1 along with the stator, and coaxially sleeve it outside the stator magnetic conducting ring 3 to form a uniform air gap space, thereby significantly reducing the rotary transformer magnetic circuit reluctance;

[0037] 2】As Figure 3 shown, load a DC current to the stator winding 2 through the detection circuit 6 to form a uniform alternating DC magnetic field;

[0038] 3】As Figure 4 shown, continuously rotate the stator winding 2. When the output voltage of the first linear Hall 4 and the second linear Hall 5 detected by the detection circuit 6 remains stable, the stator winding 2 is wound correctly. When the output voltage of the detection circuit 6 jumps, the stator winding 2 is wound incorrectly, and the position of the incorrect winding of the stator winding 2 is determined according to the jump output position of the output voltage of the first linear Hall 4 and the second linear Hall 5 detected by the detection circuit 6.

[0039] The detection principle is that the detection circuit 6 detects the correctness of the multi-pole rotary transformer stator winding 2 by outputting signals through the first linear Hall 4 and the second linear Hall 5 in series. When the multi-pole rotary transformer stator winding 2 is wound correctly, a uniform distribution of sinusoidal magnetic field equal to the number of pole pairs (p) is formed in the air gap, that is, the air gap magnetic field is sinusoidal in each 360° electrical period. Because the first linear Hall 4 and the second linear Hall 5 are 180° apart in the air gap space, the voltage amplitudes generated by the magnetic fields sensed by the first linear Hall 4 and the second linear Hall 5 are the same, and the polarities are opposite. Continuous rotation of the multi-pole rotary transformer stator winding, the first linear Hall 4 and the second linear Hall 5 in series collect the cross magnetic flux generated after the stator winding 2 is energized, which is uniformly distributed in normal times, and when the output voltage of the detection circuit 6 remains zero, the stator winding 2 of the multi-pole rotary transformer is wound correctly. Considering the installation and process deviations in actual work, some white noise and bias will be generated, so in actual work, when the stator winding 2 is wound correctly, the output voltage of the detection circuit 6 should remain stable within a small fluctuation range. When the output voltage of the detection circuit 6 changes significantly, it proves that the magnetic field in the air gap is severely distorted at the wrong coil, and the stator winding 2 of the multi-pole rotary transformer has a wound coil. In actual operation, continuous rotation of the multi-pole rotary transformer stator winding, when the first linear Hall 4 and the second linear Hall 5 sense the excitation magnetic field of the correct stator winding, the air gap magnetic field is uniformly distributed, and the output voltage detected by the detection circuit 6 fluctuates within a small range; when the first linear Hall 4 and the second linear Hall 5 sense the excitation magnetic field of the wrong stator winding, the excitation magnetic field produces severe distortion, the output voltage of the detection circuit 6 produces a jump output, and the position of the wrong stator winding 2 can be determined by the output jump position of the output voltage generated by the detection circuit 6.

[0040] As shown in Figure 2 A multi-pole rotary transformer rotor winding detection device, including a detection base 1, a rotor magnetic conducting ring 8 and a detection circuit 6. The rotor magnetic conducting ring 8 is used to reduce the reluctance of the rotary transformer magnetic circuit, enhance the direct current magnetic field of the rotary transformer, improve the air gap magnetic flux density and the change range of the magnetic field when the multi-pole rotary transformer stator winding rotates. The third linear Hall 9 and the fourth linear Hall 10 are pasted on the rotor magnetic conducting ring 8, and the third linear Hall 9 and the fourth linear Hall 10 are arranged at a position difference of 180° electrical angle (360 / 4p) for sensing the change of a pair of differential magnetic field of the multi-pole rotary transformer. The rotor magnetic conducting ring 8 is installed on the detection base 1, and is coaxially sleeved outside the rotor during detection, and forms a uniform air gap space; the detection circuit 6 is connected with the third linear Hall 9, the fourth linear Hall 10 and the rotor winding 7 through wires, and the third linear Hall 9 and the fourth linear Hall 10 are connected in series, providing the required power supply for the rotor winding 7, the third linear Hall 9 and the fourth linear Hall 10, and providing an output node for signal collection.

[0041] A detection method of a multi-pole rotary transformer rotor winding, specifically comprising the following steps:

[0042] 1】The rotor winding 7 to be detected is mounted on the detection base 1 with the rotor, and is sleeved inside the rotor magnetic conducting ring 8 to form a uniform air gap space, significantly reducing the magnetic circuit reluctance of the rotary transformer;

[0043] 2】The detection circuit 6 loads a direct current to the rotor winding 7 to form a uniform alternating direct current magnetic field;

[0044] 3】The rotor winding 7 is continuously rotated, and when the output voltage of the third linear Hall 9 and the fourth linear Hall 10 detected by the detection circuit 6 remains stable, the rotor winding 7 is wound correctly; when the output voltage of the detection circuit 6 jumps, the rotor winding 7 is wound incorrectly, and the position of the incorrectly wound rotor winding 7 is determined according to the output position of the output voltage jump of the third linear Hall 9 and the fourth linear Hall 10 detected by the detection circuit 6.

[0045] The detection principle is that the detection circuit 6 detects the correctness of the multi-pole rotary transformer rotor winding 7 through the output signals of the third linear Hall 9 and the fourth linear Hall 10 in series. When the multi-pole rotary transformer rotor winding 7 is wound correctly, a uniform distributed sinusoidal magnetic field equal to the number of pole pairs (p) is formed in the air gap, that is, the air gap magnetic field is distributed in a sinusoidal function in each 360° electrical period. Because the third linear Hall 9 and the fourth linear Hall 10 are 180° apart in the air gap space, the voltage amplitude produced by the sensitive magnetic field of the third linear Hall 9 and the fourth linear Hall 10 is the same and the polarity is opposite. Continuously rotating the multi-pole rotary transformer rotor winding, the third linear Hall 9 and the fourth linear Hall 10 in series collect the cross magnetic flux generated after the rotor winding 7 is energized, which is normally uniformly distributed. When the output voltage of the detection circuit 6 remains zero, the multi-pole rotary transformer rotor winding 7 is wound correctly. Considering the installation and process deviations in actual work, some white noise and bias will be generated. Therefore, in actual work, when the rotor winding 7 is wound correctly, the output voltage of the detection circuit 6 should remain stable within a small fluctuation range. When the output voltage of the detection circuit 6 changes significantly, it proves that the magnetic field in the air gap is severely distorted at the incorrect coil, and the multi-pole rotary transformer rotor winding 7 has an incorrectly wound coil. In actual operation, when the third linear Hall 9 and the fourth linear Hall 10 sense the excitation magnetic field of the correct rotor winding, the air gap magnetic field is uniformly distributed, and the output voltage detected by the detection circuit 6 fluctuates within a small range; when the third linear Hall 9 and the fourth linear Hall 10 sense the excitation magnetic field of the incorrect rotor winding, the excitation magnetic field is severely distorted, the output voltage of the detection circuit 6 jumps, and the position of the incorrectly wound rotor winding 7 can be determined through the output jump position of the output voltage jump of the detection circuit 6.

[0046] The above merely aims to explain the technical solutions of the present application, and is not intended to limit the same. Those skilled in the art can make modifications to the specific technical solutions described in the above embodiments, or make equivalent replacements to some of the technical features, and these modifications or replacements do not cause the corresponding technical solutions to deviate from the scope of the technical solutions protected by the present application.

Claims

1. A multi-pole rotary transformer stator winding detection device, characterized in that: It includes a detection base (1), a stator magnetic ring (3), and a detection circuit (6); The stator magnetic ring (3) is provided with a first linear Hall (4) and a second linear Hall (5), and the positions of the first linear Hall (4) and the second linear Hall (5) are 180° apart by an electrical angle. The stator magnetic ring (3) is installed on the detection base (1) and is coaxially sleeved inside the stator during detection, forming a uniform air gap space; the detection circuit (6) is connected to the first linear Hall (4), the second linear Hall (5) and the stator winding (2) through wires, and the first linear Hall (4) and the second linear Hall (5) are connected in series. The detection circuit (6) is used to apply DC current to the stator winding (2); the stator winding (2) is rotated continuously. If the output voltage of the detection circuit (6) remains stable, the stator winding (2) is wound correctly. If the output voltage of the detection circuit (6) jumps, the stator winding (2) is wound incorrectly.

2. A detection method for the multipole rotary transformer stator winding detection device as described in claim 1, characterized in that, Includes the following steps:

1. The stator winding (2) to be inspected is installed on the test base (1) along with the stator and coaxially sleeved on the outside of the stator magnetic ring (3); 2】The DC current is applied to the stator winding (2) by the detection circuit (6); 3】Continuously rotate the stator winding (2). If the output voltage of the detection circuit (6) remains stable, the stator winding (2) is wound correctly. If the output voltage of the detection circuit (6) jumps, the stator winding (2) is wound incorrectly. The position of the incorrect stator winding (2) is determined according to the position of the jump output voltage of the detection circuit (6).

3. A multi-pole rotary rotor winding detection device, characterized in that: It includes a detection base (1), a rotor magnetic ring (8), and a detection circuit (6); The rotor magnetic ring (8) is provided with a third linear Hall (9) and a fourth linear Hall (10), and the positions of the third linear Hall (9) and the fourth linear Hall (10) are 180° apart by electrical angle; The rotor magnetic ring (8) is installed on the detection base (1) and is coaxially sleeved on the outside of the rotor during detection, forming a uniform air gap space; the detection circuit (6) is connected to the third linear Hall (9), the fourth linear Hall (10) and the rotor winding (7) through wires, and the third linear Hall (9) and the fourth linear Hall (10) are connected in series. The detection circuit (6) is used to apply DC current to the rotor winding (7); the rotor winding (7) is rotated continuously. When the output voltage of the detection circuit (6) remains stable, the rotor winding (7) is wound correctly. When the output voltage of the detection circuit (6) jumps, the rotor winding (7) is wound incorrectly.

4. A detection method for the multi-pole rotary rotor winding detection device as described in claim 3, characterized in that, Includes the following steps: 1】The rotor winding (7) to be inspected is installed on the inspection base (1) along with the rotor and is fitted inside the rotor magnetic ring (8); 2】A DC current is applied to the rotor winding (7) through the detection circuit (6); 3】When the rotor winding (7) is continuously rotated, if the output voltage of the detection circuit (6) remains stable, the rotor winding (7) is wound correctly; if the output voltage of the detection circuit (6) jumps, the rotor winding (7) is wound incorrectly. The position of the incorrect rotor winding (7) is determined according to the position of the jump output voltage of the detection circuit (6).

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