CN213457764U

CN213457764U - Permanent magnet motor noninductive control system performance testing device

Info

Publication number: CN213457764U
Application number: CN202022769292.9U
Authority: CN
Inventors: 郑帮军; 杨学海; 林敏�
Original assignee: Zhengli Motor Co ltd
Current assignee: Zhengli Motor Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-15
Anticipated expiration: 2030-11-25

Abstract

The utility model provides a permanent-magnet machine noninductive control system performance's testing arrangement belongs to the motor control field. The problem that the position of a rotor cannot be directly judged by an existing brushless direct current motor is solved. The device comprises a Hall rotor and a Hall stator, wherein the Hall rotor can be quickly installed and fixed at the shaft extension end at the outer end part of a motor, the Hall stator can be quickly installed on front and rear end covers outside the motor, the Hall rotor comprises a Hall magnet and a Hall rotor support, the Hall magnet is uniformly distributed in the Hall rotor support along the circumferential direction and is arranged at intervals of N/S poles, and the Hall stator comprises a Hall stator support, a Hall PCB, a Hall sensor and a Hall signal outgoing line. The utility model has the advantages of simple structure, judge accurate and efficient.

Description

Permanent magnet motor noninductive control system performance testing device

Technical Field

The utility model belongs to the motor control field relates to a permanent-magnet machine noninductive control system performance's testing arrangement.

Background

At present, due to the characteristics of low cost and simple production process of the non-inductive brushless direct current motor, the non-inductive brushless direct current motor is widely applied to a fluid light-load system and is used as a core control element of the system, and the performance of the non-inductive brushless direct current motor is directly reflected to the competition of the product on the market. Therefore, the testing and judgment of the performance of a control system of the motor are particularly important, the control principle of the brushless direct current motor is mainly to control the current of the motor through the position of the rotor, the non-inductive brushless direct current motor cannot directly judge the position of the rotor, and the position of the rotor can only be obtained through estimation.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide the control of an accessible to the rotor position to reach the accuracy of estimating the rotor position in controlling, judge the good testing arrangement of control system.

The purpose of the utility model can be realized by the following technical proposal: the device is characterized by comprising a Hall rotor and a Hall stator, wherein the Hall rotor can be quickly installed and fixed at the shaft extension end at the outer end part of a motor, the Hall stator can be quickly installed on front and rear end covers outside the motor, the Hall rotor comprises a Hall magnet and a Hall rotor support, the Hall magnet is uniformly distributed in the Hall rotor support along the circumferential direction, N/S poles are distributed at intervals, and the Hall stator comprises a Hall stator support, a Hall PCB, a Hall sensor and a Hall signal outgoing line.

In the device for testing the performance of the permanent magnet motor sensorless control system, the hall rotor support is provided with an annular groove for mounting the hall magnet, the hall rotor is also provided with a pressing block for tightly mounting the hall rotor at the shaft end of the motor, and the pressing block is fixedly mounted at the shaft end of the motor through the locking screw.

In the device for testing the performance of the permanent magnet motor non-inductive control system, the number of the Hall magnets is the same as the number of poles of the tested motor, N/S poles are alternately arranged during assembly, and the magnetizing direction of the Hall magnets is axial magnetizing.

In the device for testing the performance of the permanent magnet motor sensorless control system, the hall rotor support is made of an aluminum alloy material.

In the device for testing the performance of the permanent magnet motor sensorless control system, the number of the Hall sensors is 3, the 3 Hall sensors are distributed along the circumferential direction at 120 degrees adjacent to each other, and the three Hall sensors correspond to the number of the Hall magnets after being installed.

In the device for testing the performance of the permanent magnet motor sensorless control system, the hall PCB is provided with a PCB adjusting waist-shaped hole for adjusting the hall PCB, and the PCB adjusting waist-shaped hole is provided with a fastening screw for fixedly installing the hall PCB on the hall stator support.

Compared with the prior art, the permanent magnet motor noninductive control system performance testing device has the advantages that the rotor position is monitored, the accuracy of rotor position estimation in control is obtained, the control system is judged to be excellent, and the permanent magnet motor noninductive control system performance testing device is simple in structure, high in accuracy and low in manufacturing cost.

Drawings

Fig. 1 is a schematic structural diagram of a hall rotor of the device for testing the performance of the permanent magnet motor noninductive control system.

Fig. 2 is a schematic structural diagram of a hall stator of the device for testing the performance of the permanent magnet motor noninductive control system.

In the figure, 1, a Hall rotor; 2. a Hall stator; 3. a Hall magnet; 4. a Hall rotor bracket; 5. briquetting; 6. an annular groove; 7. locking the screw; 8. a Hall stator bracket; 9. a Hall PCB; 10. a Hall sensor; 11. a Hall signal outgoing line; 12. PCB adjusts the waist-shaped hole; 13. and (5) fastening the screw.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the device for testing the performance of the permanent magnet motor noninductive control system comprises a hall rotor 1 which can be quickly installed and fixed at the shaft extension end at the outer end part of the motor and hall stators 2 which can be quickly installed on the front end cover and the rear end cover outside the motor, wherein the hall rotor 1 comprises a hall magnet 3 and a hall rotor support 4, the hall magnet 3 is uniformly distributed in the hall rotor support 4 along the circumferential direction and is distributed at intervals of N/S poles, and the hall stator 2 comprises a hall stator support 8, a hall PCB9, a hall sensor 10 and a hall signal outgoing line 11.

Principle of operation

The Hall rotor 1 and a motor rotating shaft are coaxially arranged and used for synchronizing the position of the rotor; the Hall stator 2 is arranged on the front end cover and the rear end cover of the motor and used for sensing and outputting a rotor position signal.

In order to accurately synchronize the rotor position of the motor, the number of the Hall magnets 3 is equal to the number of poles of the motor and is uniformly distributed along the circumferential direction.

In order to avoid the flying-out caused by the centrifugal force during the rotation of the motor, a mounting annular groove 6 is provided for mounting the hall magnet 3.

In order to install the Hall rotor 1 at the motor shaft extension end quickly and reliably, the Hall rotor support 4 and the pressing block 5 are arranged, the Hall rotor support 4 is assembled at the rear end of the motor shaft extension end, the pressing block 5 is fastened through the locking screw 7, and the Hall rotor 1 is installed at the motor shaft end reliably.

In order to easily and effectively sense the position of the rotor, the hall stator 2 is provided with 3 hall sensors 10 which are distributed along the circumferential direction at 120 degrees and are aligned with the hall magnets 3 after being installed.

In order to directly observe the hall signal, the hall PCB9 is provided with a kidney-shaped mounting hole, and the hall PCB9 can be adjusted in the circumferential direction so as to find the relative position of the hall signal and the counter-potential of the motor.

In order that the Hall stator 2 can reliably and accurately feed back the position of the rotor, the Hall stator support 8 is arranged to contain characteristics, the Hall stator support is coaxially positioned through flanges of front and rear end covers of the motor and fastened on the end covers by screws, and the Hall PCB9 is arranged on the Hall stator support 8 through positioning holes so as to reduce mechanical errors and more accurately reflect the position of the rotor of the motor.

Preferentially, the hall rotor support 4 is provided with an annular groove 6 for installing the hall magnet 3, the hall rotor 1 is also provided with a pressing block 5 for tightly installing the hall rotor 1 on the shaft end of the motor, and the pressing block 5 is fixedly installed on the shaft end of the motor through a locking screw 7.

Preferentially, the number of the Hall magnets 3 is the same as that of the tested motor poles, N/S poles are alternately arranged during assembly, and the magnetizing direction of the Hall magnets 3 is axial magnetizing.

Preferably, the hall rotor support 4 is made of an aluminum alloy.

Preferentially, the number of the Hall sensors 10 is 3, the 3 Hall sensors 10 are distributed along the circumferential direction at 120 degrees adjacent to each other, and the three Hall sensors 10 are arranged to correspond to the number of the Hall magnets 3.

Preferentially, the hall PCB9 is provided with a PCB adjusting waist-shaped hole 12 for adjusting the hall PCB9, and the PCB adjusting waist-shaped hole 12 is provided with a fastening screw 13 for fixedly mounting the hall PCB9 on the hall stator support 8.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a permanent-magnet machine does not have testing arrangement of sense control system performance, its characterized in that, the device can be installed and be fixed in hall rotor (1) of the outer tip axle extension end of motor fast and can install hall stator (2) on the outside front and back end cover of motor fast, hall rotor (1) including hall magnet (3) and hall rotor support (4), hall magnet (3) equally divide along the circumferencial direction and arrange in hall rotor support (4) and the interval of N/S interelectrode, hall stator (2) including hall stator support (8), hall PCB (9), hall sensor (10) and hall signal lead-out wire (11).

2. The permanent magnet motor noninductive control system performance testing device according to claim 1, characterized in that the hall rotor support (4) is provided with an annular groove (6) for mounting the hall magnet (3), the hall rotor (1) is further provided with a pressing block (5) for tightly mounting the hall rotor (1) on the motor shaft end, and the pressing block (5) is fixedly mounted on the motor shaft end through a locking screw (7).

3. The device for testing the performance of the permanent magnet motor noninductive control system according to claim 1, wherein the number of the Hall magnets (3) is the same as the number of poles of the motor to be tested, N/S poles are alternately arranged during assembly, and the magnetizing direction of the Hall magnets (3) is axial magnetizing.

4. The permanent magnet motor noninductive control system performance testing device according to claim 1, characterized in that the Hall rotor support (4) is made of aluminum alloy.

5. The device for testing the performance of the permanent magnet motor noninductive control system according to claim 1, wherein the number of the hall sensors (10) is 3, the 3 hall sensors (10) are distributed along the circumferential direction at 120 degrees and are adjacent to each other, and the number of the three hall sensors (10) corresponds to the number of the hall magnets (3) after being installed.

6. The permanent magnet motor noninductive control system performance testing device according to claim 1, characterized in that a PCB adjusting waist-shaped hole (12) for adjusting the Hall PCB (9) is formed in the Hall PCB (9), and a fastening screw (13) for fixedly mounting the Hall PCB (9) on the Hall stator support (8) is arranged on the PCB adjusting waist-shaped hole (12).