Open magnetic suspension motor multi-parameter test platform

Abstract

This invention belongs to the field of magnetic levitation motor testing technology, and particularly relates to an open multi-parameter testing platform for magnetic levitation motors, including a drive mechanism, a testing mechanism, an adjustment mechanism, and a transmission mechanism. The drive mechanism provides power, and the testing mechanism has multiple independent testing units. Each component of the magnetic levitation motor to be tested can be detachably connected to its corresponding testing unit, enabling separate and independent testing of different core components without requiring overall assembly. The adjustment mechanism is located below each testing unit, allowing for precise fine-tuning of the unit's position and effectively simulating positional deviations during actual installation. The transmission mechanism's input end is connected to the drive mechanism, and multiple output ends are respectively connected to each testing unit. The transmission mechanism synchronously transmits power to each testing unit, ensuring consistent operating conditions across all units. This invention is easy to assemble and disassemble, provides stable testing, and has strong versatility, meeting the needs for independent testing of multiple components and deviation simulation detection of magnetic levitation motors.

Description

Technical Field

[0001] This invention belongs to the field of magnetic levitation motor technology, and in particular relates to an open-type multi-parameter testing platform for magnetic levitation motors. Background Technology

[0002] As a core component of high-end equipment, magnetic levitation motors are widely used in high-speed rotation, frictionless, and long-life operating scenarios. The performance parameters of its core components, such as radial magnetic bearings, axial magnetic bearings, and motor stator, directly determine the overall stability and reliability of the machine. During R&D verification and production testing, independent performance testing and full-parameter calibration of each component are required to ensure product quality meets standards. Currently, the magnetic levitation motor testing equipment used in the industry has many limitations in its mechanical structure and usage, making it difficult to meet the demands for efficient, accurate, and flexible testing.

[0003] Traditional testing platforms often employ a closed, fully assembled structure. Radial magnetic bearings, axial magnetic bearings, and motor stators must be assembled into a complete unit before testing can begin. If a single component exhibits performance deviations or requires replacement and adjustment, the entire unit must be disassembled, resulting in cumbersome procedures and significantly reduced R&D and testing efficiency. Multi-station testing platforms frequently utilize multiple motors driven separately or in a single-end drive configuration, making it difficult to ensure consistent rotational speeds across multiple test axes. Different tested components operate under varying conditions, leading to a lack of comparability in test data and compromising accuracy. Furthermore, existing platforms lack a quantitatively adjustable displacement simulation structure, failing to accurately simulate installation position deviations and hindering the acquisition of component performance data under real-world operating conditions. Summary of the Invention

[0004] The purpose of this invention is to provide an open multi-parameter testing platform for magnetic levitation motors to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following solution: An open-type multi-parameter testing platform for magnetic levitation motors includes: The drive mechanism is used to provide power to the test platform; The testing mechanism includes multiple testing units, and the components of the magnetic levitation motor to be tested are detachably connected to the multiple testing units, and the multiple testing units are used to test different components of the magnetic levitation motor. An adjustment mechanism, located below the test unit, is used to fine-tune the test unit to simulate installation deviations; The transmission mechanism has an input end connected to the drive mechanism and multiple output ends connected to multiple test units, which are used to transmit the power of the drive mechanism to the test mechanism. The transmission mechanism includes a first bevel gear connected to the drive mechanism, the first bevel gear being connected to a plurality of second bevel gears, and the plurality of second bevel gears being connected to a plurality of test units one by one.

[0006] In the open-type magnetic levitation motor multi-parameter test platform of the present invention, the driving mechanism includes a rotation driving component, which is fixed on a first support frame. The first support frame is fixedly installed, and the rotation driving component drives the first bevel gear to rotate.

[0007] In the open-type magnetic levitation motor multi-parameter test platform of the present invention, the first bevel gear is connected to the rotation drive component through the rotor assembly, and the second bevel gear is connected to the test unit through the connecting mechanism.

[0008] In the open-type magnetic levitation motor multi-parameter test platform of the present invention, the connecting mechanism includes a drive shaft, which is rotatably connected to a second support plate. The second support plate is fixedly installed. One end of the drive shaft is coaxially fixed to the second bevel gear, and the other end of the drive shaft is connected to the test unit.

[0009] In the open-type magnetic levitation motor multi-parameter test platform of the present invention, the multiple test units are respectively a radial magnetic bearing test unit, an axial magnetic bearing test unit, and a motor stator test unit. The radial magnetic bearing test unit, the axial magnetic bearing test unit, and the motor stator test unit are respectively connected to multiple transmission shafts one by one.

[0010] In the open-type magnetic levitation motor multi-parameter test platform of the present invention, the radial magnetic bearing test unit includes a radial bearing winding, a test shaft coaxially passing through the radial bearing winding, the test shaft being connected to one of the transmission shafts, the test shaft being rotatably connected to a first support plate, the radial bearing winding being detachably connected to a first mounting component, an eddy current displacement sensor being provided on the first mounting component, an adjustment mechanism being provided below the first mounting component, the adjustment mechanism being fixedly connected to the first support plate, and the first support plate being fixedly installed.

[0011] In the open-type magnetic levitation motor multi-parameter test platform of the present invention, the axial magnetic bearing test unit includes an axial bearing winding, a test shaft coaxially passing through the axial bearing winding, the test shaft being connected to one of the transmission shafts, the test shaft being rotatably connected to a first support plate, the axial bearing winding being detachably connected to a second mounting component, the second mounting component being provided with a thrust disk and a displacement sensor, the adjustment mechanism being located below the second mounting component, the adjustment mechanism being fixedly connected to the first support plate, and the first support plate being fixedly installed.

[0012] In the open-type magnetic levitation motor multi-parameter test platform of the present invention, the motor stator test unit includes a motor stator winding, a test shaft is coaxially inserted in the motor stator winding, the test shaft is connected to one of the transmission shafts, the test shaft is rotatably connected to a first support plate, the motor stator winding is detachably connected to a third mounting component, the adjustment mechanism is disposed below the third mounting component, the adjustment mechanism is fixedly connected to the first support plate, and the first support plate is fixedly disposed.

[0013] In the open-type magnetic levitation motor multi-parameter test platform of the present invention, the adjustment mechanism includes a three-axis micro-motion platform.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects: This invention achieves efficient and accurate testing of multiple parameters of a magnetic levitation motor through the coordinated use of a drive mechanism, a testing mechanism, an adjustment mechanism, and a bevel gear transmission mechanism. The testing mechanism employs multiple independent testing units, allowing for the detachable installation and testing of different components, enabling independent testing of individual parts without requiring overall assembly, thus improving disassembly, assembly, and debugging efficiency. The transmission mechanism uses a first bevel gear to synchronously drive multiple second bevel gears, uniformly and synchronously transmitting power to each testing unit, ensuring consistent testing conditions and improving data accuracy and comparability. The adjustment mechanism allows for precise fine-tuning of the testing units, effectively simulating installation deviations and making the test data more closely reflect actual operating conditions. The overall structure is simple, the transmission is smooth, and the operation is reliable, meeting the needs of magnetic levitation motor R&D and production testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a first-view perspective view of the drive mechanism in this invention; Figure 4 This is a first-view perspective view of the radial magnetic bearing test unit in this invention; Figure 5 This is a schematic diagram of the radial magnetic bearing testing unit in this invention; Figure 6 This is a first-view perspective view of the axial magnetic bearing test unit in this invention; Figure 7 This is a schematic diagram of the axial magnetic bearing testing unit in this invention; Figure 8 This is a first-view perspective view of the motor stator testing unit in this invention; Figure 9 This is a schematic diagram of the structure of the motor stator testing unit in this invention; The components include: 1. Rotary drive component; 2. Transmission mechanism; 3. Rotor assembly; 4. Radial magnetic bearing test unit; 5. Axial magnetic bearing test unit; 6. Motor stator test unit; 7. Connecting component; 8. Test shaft; 9. First support plate; 10. Transmission shaft; 11. Second support plate; 12. Radial bearing winding; 13. Axial bearing winding; 14. Motor stator winding; 15. Eddy current displacement sensor; 16. Thrust disk; and 17. Three-axis micro-motion platform. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Reference Figures 1 to 9 This invention discloses an open-type multi-parameter testing platform for magnetic levitation motors, comprising: The drive mechanism is used to provide power to the test platform; The testing mechanism includes multiple testing units. The components of the magnetic levitation motor to be tested are detachably connected to the multiple testing units, and the multiple testing units are used to test different components of the magnetic levitation motor. An adjustment mechanism, located below the test unit, is used to fine-tune the test unit and simulate installation deviations. The transmission mechanism 2 has an input end connected to the drive mechanism and multiple output ends connected to multiple test units, which is used to transmit the power of the drive mechanism to the test mechanism. The transmission mechanism 2 includes a first bevel gear connected to the drive mechanism, and the first bevel gear is connected to multiple second bevel gears, which are respectively connected to multiple test units.

[0019] In one alternative technical solution, the driving mechanism includes a rotation driving component 1, which is fixed on a first support frame. The first support frame is fixedly installed, and the rotation driving component 1 drives the first bevel gear to rotate.

[0020] Rotation drive component 1 is selected as a permanent magnet high-speed synchronous motor.

[0021] In one alternative technical solution, the first bevel gear is connected to the rotation drive component 1 via the rotor assembly 3, and the second bevel gear is connected to the test unit via the connecting mechanism.

[0022] In one optional technical solution, the connecting mechanism includes a drive shaft 10, which is rotatably connected to a second support plate 11. The second support plate 11 is fixedly installed, one end of the drive shaft 10 is coaxially fixed to a second bevel gear, and the other end of the drive shaft 10 is connected to a test unit.

[0023] In one optional technical solution, the multiple test units are a radial magnetic bearing test unit 4, an axial magnetic bearing test unit 5, and a motor stator test unit 6, which are respectively connected to multiple transmission shafts 10 in a one-to-one correspondence.

[0024] In one optional technical solution, the radial magnetic bearing test unit 4 includes a radial bearing winding 12, a test shaft 8 coaxially passing through the radial bearing winding 12, the test shaft 8 being connected to one of the transmission shafts 10, the test shaft 8 being rotatably connected to a first support plate 9, the radial bearing winding 12 being detachably connected to a first mounting component, an eddy current displacement sensor 15 being provided on the first mounting component, an adjustment mechanism being provided below the first mounting component, the adjustment mechanism being fixedly connected to the first support plate 9, and the first support plate 9 being fixedly provided.

[0025] In one optional technical solution, the axial magnetic bearing test unit 5 includes an axial bearing winding 13, a test shaft 8 coaxially passing through the axial bearing winding 13, the test shaft 8 being connected to one of the transmission shafts 10, the test shaft 8 being rotatably connected to a first support plate 9, the axial bearing winding 13 being detachably connected to a second mounting component, the second mounting component being provided with a thrust plate 16 and a displacement sensor, an adjustment mechanism being located below the second mounting component, the adjustment mechanism being fixedly connected to the first support plate 9, and the first support plate 9 being fixedly set.

[0026] In one optional technical solution, the motor stator test unit 6 includes a motor stator winding 14, a test shaft 8 coaxially passing through the motor stator winding 14, the test shaft 8 being connected to one of the transmission shafts 10, the test shaft 8 being rotatably connected to a first support plate 9, the motor stator winding 14 being detachably connected to a third mounting component, an adjustment mechanism being located below the third mounting component, the adjustment mechanism being fixedly connected to the first support plate 9, and the first support plate 9 being fixedly set.

[0027] The core components of the motor stator testing unit structure are: motor stator winding 14, test shaft 8, first support plate 9, transmission shaft 10, second support plate 11, third mounting component, and three-axis micro-motion platform.

[0028] Assembly Relationship: The test shaft 8 is coaxially inserted into the motor stator winding 14; one end of the test shaft 8 is connected to the transmission shaft 10 through a connecting piece, a plum blossom coupling; the test shaft 8 is rotatably connected to the first support plate 9, which supports the test shaft 8; the motor stator winding 14 is detachably connected to the third mounting piece; the three-axis micro-motion platform 17 is located below the third mounting piece and fixed to the first support plate 9, which can drive the stator to achieve displacement adjustment in the XYZ directions.

[0029] The core components of the radial magnetic bearing test unit are: radial bearing winding 12, test shaft 8, rotor assembly 3, radial displacement sensor, mounting fixture, and three-axis micro-motion platform 17.

[0030] Assembly relationship: The test shaft 8 and the transmission shaft 10 are connected by a plum blossom coupling. The test shaft 8 is rotatably connected to the first support plate 9, which supports the test shaft 8. The rotor assembly 3 is coaxially fixed on the test shaft 8 and located inside the radial bearing winding 12. The radial bearing winding 12 is detachably mounted on a special fixture, and a three-axis micro-motion platform 17 is configured below the fixture. The radial displacement sensor is mounted on the end face of the radial bearing winding 12 and is evenly arranged along the circumference to collect the radial position of the rotor in real time.

[0031] The core components of the axial magnetic bearing testing unit are: axial bearing winding 13, thrust plate 16, test shaft 8, axial displacement sensor, mounting fixture, and three-axis micro-motion platform 17.

[0032] Assembly relationship: The test shaft 8 and the transmission shaft 10 are connected by a plum blossom coupling; the thrust plate 16 is coaxially fixed on the test shaft 8, and the axial bearing windings 13 are symmetrically arranged on both sides of the thrust plate 16; the axial bearing windings 13 are detachably installed on a special fixture, and a three-axis micro-motion platform 17 is configured below the fixture; the axial displacement sensor is installed facing the end face of the thrust plate 16 to collect the axial position of the rotor in real time.

[0033] Sensor configuration Eddy current displacement sensor 15 Radial magnetic bearing test unit 4: Four eddy current displacement sensors 15 (0°, 90°, 180°, 270°) are evenly arranged along the circumference on the end face of the radial bearing winding 12 to collect the radial position of the rotor in real time with a resolution ≤1μm; Axial magnetic bearing test unit 5: Two axial displacement sensors are symmetrically arranged on both sides of the thrust plate 16 and installed facing the end face of the thrust plate 16 to collect the axial position of the rotor. The Hall voltage / current sensor is directly integrated with the measured winding (radial bearing winding 12, axial bearing winding 13, motor stator winding 14). The voltage sensor is connected in parallel across the winding, and the current sensor is connected in series in the winding drive circuit. No independent support is required, the signal transmission path is short, and the anti-interference capability is strong.

[0034] Example Platform setup: The motor stator winding 14 is mounted on the third mounting component and fixed on the three-axis micro-motion platform 17; the test shaft 8 and the transmission shaft 10 are connected by a plum blossom coupling and rotatably supported on the first support plate 9; the eddy current displacement sensor 15 is installed and the zero point and gain are calibrated.

[0035] Operating condition setting: Adjust the position of the motor stator winding 14 through the three-axis micro-motion platform 17 to make the stator and rotor produce a preset radial deviation (such as 0.05mm) and axial deviation (such as 0.03mm), and lock the platform to fix the position.

[0036] Start-up test: Start the permanent magnet synchronous motor and drive the test shaft to rotate through the bevel gear transmission. Set the speed to 1500 rpm and ensure that the speeds of the three axes are consistent.

[0037] Data acquisition: The voltage and current signals of the motor stator windings, as well as the radial and axial displacement signals of the rotor, are acquired synchronously for 30 seconds.

[0038] Data processing: Analyze the changes in back electromotive force, current harmonics, and air gap magnetic field under different deviation conditions, and evaluate the impact of installation deviation on the electromagnetic performance of the motor.

[0039] In one alternative technical solution, the adjustment mechanism includes a three-axis micro-motion platform 17.

[0040] The three-axis micro-motion platform 17 consists of an X-axis linear guide pair, a Y-axis linear guide pair, a Z-axis linear lifting pair, a precision micrometer head, and a locking mechanism. It adopts a stacked structure and can achieve independent adjustment of three degrees of freedom.

[0041] Working principle: X / Y axis adjustment: By rotating the micrometer head in the horizontal direction, the slide table is driven to move along the guide rail pair to achieve radial position fine adjustment; Z-axis adjustment: By rotating the vertical micrometer head, the lifting joint is driven to move up and down, thereby achieving fine adjustment of the axial position; After adjustment, the position of the slide can be fixed by the locking mechanism to prevent displacement during the test and ensure stable operation.

[0042] Installation method: It is fixedly connected to the mounting fixture of each test unit, which can drive the tested component to move in the XYZ directions to simulate installation deviation, uneven air gap and other working conditions.

[0043] In this invention, the test shaft 8 and the transmission shaft 10 are connected by a connector 7, which is a universal coupling.

[0044] This invention discloses an open-type multi-parameter testing platform for magnetic levitation motors, comprising a drive mechanism, a testing mechanism, an adjustment mechanism, and a transmission mechanism 2. The drive mechanism includes a rotating drive component 1, which is fixed to a first support frame and provides power to the platform. The transmission mechanism 2 has its input end connected to the drive mechanism and multiple output ends connected to multiple testing units. The transmission mechanism 2 includes a first bevel gear connected to the drive mechanism, which cooperates with multiple second bevel gears to achieve synchronous power distribution. The first bevel gear is connected to the rotating drive component 1 via a connecting mechanism, and the second bevel gears are connected to the testing units via another connecting mechanism. The connecting mechanism includes a drive shaft 10, which is rotatably connected to a second support plate 11. One end of the drive shaft 10 is coaxially fixed to either the first or second bevel gear, and the other end is connected to the rotating drive component 1 or the testing unit. The testing mechanism includes a radial magnetic bearing testing unit 4, an axial magnetic bearing testing unit 5, and a motor stator testing unit 6, each of which is connected to the drive shaft 10 in a corresponding manner. The radial magnetic bearing test unit 4 includes a radial bearing winding 12, a test shaft 8, a first support plate 9, a first mounting component, and an eddy current displacement sensor 15. The axial magnetic bearing test unit 5 includes an axial bearing winding 13, a test shaft 8, a first support plate 9, a second mounting component, a thrust plate 16, and a displacement sensor. The motor stator test unit 6 includes a motor stator winding 14, a test shaft 8, a first support plate 9, and a third mounting component. Each test shaft 8 is rotatably connected to the first support plate 9, and the component to be tested can be detachably installed on the corresponding mounting component. The adjustment mechanism is a three-axis micro-motion platform 17, which is located below each mounting component and fixed to the first support plate 9. It is used to fine-tune the test unit to simulate installation deviations. During operation, the rotation drive 1 drives the transmission mechanism 2 to synchronously drive each test unit to operate. The operating conditions of each test unit remain consistent, and the component to be tested can be installed and tested independently. The position deviation is simulated through the three-axis micro-motion platform 17, and displacement and performance parameters are collected in conjunction with the sensor, realizing independent detection of multiple components of the magnetic levitation motor and verification of deviation operating conditions.

[0045] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An open-type multi-parameter testing platform for magnetic levitation motors, characterized in that, include: The drive mechanism is used to provide power to the test platform; The testing mechanism includes multiple testing units, and the components of the magnetic levitation motor to be tested are detachably connected to the multiple testing units, and the multiple testing units are used to test different components of the magnetic levitation motor. An adjustment mechanism, located below the test unit, is used to fine-tune the test unit to simulate installation deviations; The transmission mechanism (2) has an input end connected to the drive mechanism and multiple output ends connected to multiple test units respectively, and is used to transmit the power of the drive mechanism to the test mechanism. The transmission mechanism (2) includes a first bevel gear connected to the drive mechanism. The first bevel gear is connected to a plurality of second bevel gears, and the plurality of second bevel gears are respectively connected to a plurality of test units.

2. The open-type magnetic levitation motor multi-parameter testing platform according to claim 1, characterized in that: The driving mechanism includes a rotation drive component (1), which is fixed on a first support frame. The first support frame is fixedly installed, and the rotation drive component (1) drives the first bevel gear to rotate.

3. The open-type magnetic levitation motor multi-parameter testing platform according to claim 2, characterized in that: The first bevel gear is connected to the rotation drive (1) via the rotor assembly (3), and the second bevel gear is connected to the test unit via the connecting mechanism.

4. The open-type multi-parameter testing platform for magnetic levitation motors according to claim 3, characterized in that: The connecting mechanism includes a drive shaft (10), which is rotatably connected to a second support plate (11). The second support plate (11) is fixedly installed. One end of the drive shaft (10) is coaxially fixed to the second bevel gear, and the other end of the drive shaft (10) is connected to the test unit.

5. The open-type multi-parameter testing platform for magnetic levitation motors according to claim 4, characterized in that: The multiple test units are a radial magnetic bearing test unit (4), an axial magnetic bearing test unit (5), and a motor stator test unit (6), and the radial magnetic bearing test unit (4), the axial magnetic bearing test unit (5), and the motor stator test unit (6) are respectively connected to multiple transmission shafts (10) one by one.

6. The open-type magnetic levitation motor multi-parameter testing platform according to claim 5, characterized in that: The radial magnetic bearing test unit (4) includes a radial bearing winding (12), a test shaft (8) is coaxially inserted in the radial bearing winding (12), the test shaft (8) is connected to one of the transmission shafts (10), the test shaft (8) is rotatably connected to the first support plate (9), the radial bearing winding (12) is detachably connected to the first mounting component, the first mounting component is provided with an eddy current displacement sensor (15), the adjustment mechanism is located below the first mounting component, the adjustment mechanism is fixedly connected to the first support plate (9), and the first support plate (9) is fixedly set.

7. The open-type magnetic levitation motor multi-parameter testing platform according to claim 5, characterized in that: The axial magnetic bearing test unit (5) includes an axial bearing winding (13), a test shaft (8) is coaxially inserted in the axial bearing winding (13), the test shaft (8) is connected to one of the transmission shafts (10), the test shaft (8) is rotatably connected to the first support plate (9), the axial bearing winding (13) is detachably connected to the second mounting component, the second mounting component is provided with a thrust plate (16) and a displacement sensor, the adjustment mechanism is located below the second mounting component, the adjustment mechanism is fixedly connected to the first support plate (9), and the first support plate (9) is fixedly installed.

8. The open-type multi-parameter testing platform for magnetic levitation motors according to claim 5, characterized in that: The motor stator test unit (6) includes a motor stator winding (14), a test shaft (8) is coaxially inserted in the motor stator winding (14), the test shaft (8) is connected to one of the transmission shafts (10), the test shaft (8) is rotatably connected to the first support plate (9), the motor stator winding (14) is detachably connected to the third mounting component, the adjustment mechanism is located below the third mounting component, the adjustment mechanism is fixedly connected to the first support plate (9), and the first support plate (9) is fixedly installed.

9. The open-type multi-parameter testing platform for magnetic levitation motors according to claim 1, characterized in that: The adjustment mechanism includes a three-axis micro-motion platform (17).

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