CN116412211A - Single-degree-of-freedom compact symmetrical hybrid magnetic suspension system - Google Patents
Single-degree-of-freedom compact symmetrical hybrid magnetic suspension system Download PDFInfo
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- CN116412211A CN116412211A CN202310068193.3A CN202310068193A CN116412211A CN 116412211 A CN116412211 A CN 116412211A CN 202310068193 A CN202310068193 A CN 202310068193A CN 116412211 A CN116412211 A CN 116412211A
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- 239000000725 suspension Substances 0.000 title claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 53
- 239000002184 metal Substances 0.000 claims abstract description 53
- 238000005339 levitation Methods 0.000 claims abstract description 28
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 230000005284 excitation Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 238000011896 sensitive detection Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 4
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000004804 winding Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
- F16C32/0468—Details of the magnetic circuit of moving parts of the magnetic circuit, e.g. of the rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
- F16C32/0455—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control including digital signal processing [DSP] and analog/digital conversion [A/D, D/A]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The application relates to the technical field of magnetic suspension, and specifically relates to a single-degree-of-freedom compact symmetrical hybrid magnetic suspension system, which comprises a first permanent magnet, a second permanent magnet, a first control coil, a second control coil, a metal rotor and a control circuit, wherein: the first control coil and the second control coil are symmetrically arranged on two sides of the metal rotor; the first permanent magnet is arranged on the outer side of the first control coil, and the second permanent magnet is arranged on the outer side of the second control coil; the centers of the first permanent magnet, the second permanent magnet, the first control coil, the second control coil and the metal rotor are all on the same axis; the control circuit is respectively connected with the positive electrode of the first control coil and the positive electrode of the second control coil, and the negative electrode of the first control coil is connected with the negative electrode of the second control coil. The magnetic levitation device has the advantages of simple structure, definite coil winding direction and process, contribution to the adoption of instruments with limited physical space, and realization of low-power consumption and long-term stable magnetic levitation.
Description
Technical Field
The application relates to the technical field of magnetic suspension, in particular to a single-degree-of-freedom compact symmetrical hybrid magnetic suspension system.
Background
The magnetic suspension technology, especially the magnetic suspension bearing technology, uses permanent magnets or electromagnets to generate magnetic force to bear the rotor, so that the rotor is suspended at the target position. Compared with the traditional rotor with a rigid bearing or an axial line, the magnetic suspension rotor is suspended in the air and does not generate mechanical contact with surrounding structures, and can easily achieve higher rotating speed. And reduces the energy consumption without lubrication.
The implementation of a magnetic levitation system can be generally divided into three ways: active magnetic levitation, passive magnetic levitation and hybrid magnetic levitation. The mixed magnetic suspension is characterized in that a permanent magnet generates a bias magnetic field, a control coil is electrified to generate electromagnetic force, acting force is generated on a rotor, and the suspension of the rotor is supported. Compared with an active magnetic suspension system controlled by a pure electromagnetic coil, the hybrid magnetic suspension can reduce the power consumption of the control coil, thereby reducing the number of turns and the size of the control coil. The compactness of the magnetic suspension system is improved, and the magnetic suspension system has application in various fields. However, the existing hybrid magnetic levitation system still has a certain room for improvement in design, so that the hybrid magnetic levitation system can be applied in a wider field.
Most of the existing hybrid magnetic levitation systems still need to additionally install an optical displacement sensor as a detector of rotor levitation displacement in use. The optical sensor occupies a certain instrument space, the data conversion and processing process is also introduced in the data processing, and the optical displacement sensor can not work efficiently due to the specificity of the instrument working scene under a part of specific working conditions, so that the working performance loss of the magnetic suspension system is likely to be caused.
Disclosure of Invention
The application provides a single-degree-of-freedom compact symmetrical hybrid magnetic suspension system, which uses the combined action of permanent magnets and electromagnetism to finish the magnetic suspension of a rotor, and greatly reduces the power consumption compared with pure magnetic suspension.
In order to achieve the above object, the present application provides a single-degree-of-freedom compact symmetrical hybrid magnetic levitation system, comprising a first permanent magnet, a second permanent magnet, a first control coil, a second control coil, a metal rotor and a control circuit, wherein: the first control coil and the second control coil are symmetrically arranged on two sides of the metal rotor, and the distance between the first control coil and the metal rotor is the same as the distance between the second control coil and the metal rotor; the first permanent magnet and the second permanent magnet are symmetrically arranged on two sides of the metal rotor, the first permanent magnet is arranged on the outer side of the first control coil, the second permanent magnet is arranged on the outer side of the second control coil, and the distance between the first permanent magnet and the first control coil is the same as the distance between the second permanent magnet and the second control coil; the centers of the first permanent magnet, the second permanent magnet, the first control coil, the second control coil and the metal rotor are all on the same axis; the control circuit is respectively connected with the positive electrode of the first control coil and the positive electrode of the second control coil, and the negative electrode of the first control coil is connected with the negative electrode of the second control coil.
Furthermore, the magnetic pole directions of the first permanent magnet and the second permanent magnet are the same, and the materials are neodymium iron boron materials.
Further, the anodes of the first control coil and the second control coil are connected with the anode of the direct current power supply, and the cathodes of the first control coil and the second control coil are connected with the cathode of the direct current power supply.
Further, the first control coil and the second control coil are iron-core-free control coils, and after the iron-core-free control coils are connected with a direct current power supply, the polarities of the first control coil and the second control coil are opposite.
Further, the material of the metal rotor is martensitic stainless steel material.
Further, the control circuit includes a controller module, an ac-dc coupling bridge, and a phase sensitive detection module, wherein: the alternating current-direct current coupling bridge is connected with the positive poles of the first control coil and the second control coil and is used for loading alternating current excitation and direct current excitation to the first control coil and the second control coil; the phase-sensitive detection module is respectively connected with the AC-DC coupling bridge and the controller and is used for detecting displacement; the controller module is connected with the AC-DC coupling bridge and is used for PID control and realizing control of the output DC voltage.
Further, the system also comprises a signal generator and an adder, wherein: the signal generator is connected with the phase sensitive detection module and is used for providing a high-frequency excitation signal for displacement detection; the adder is arranged between the phase sensitive detection module and the controller module and is used for non-negative conversion of the displacement signal.
The single-degree-of-freedom compact symmetrical hybrid magnetic suspension system provided by the invention has the following beneficial effects:
the magnetic levitation hybrid magnetic levitation system has the advantages that the structure is simple, the coil winding direction and the process are determined, the modular design is adopted, the processing and the installation are easy, the control coil can be used as a position sensor and a magnetic levitation electromagnetic force controller, so that the system structure of the hybrid magnetic levitation system is more compact, the control system is simplified, the adoption of instruments with limited physical space is facilitated, and the magnetic levitation with low power consumption and long-term stability is realized; in addition, when the metal rotor or the using condition is changed, the distance between the permanent magnet and the control coil can be adjusted correspondingly to the applicable condition directly.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application. In the drawings:
FIG. 1 is a schematic diagram of a single degree of freedom compact symmetrical hybrid magnetic levitation system provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic diagram of a control circuit of a single degree of freedom compact symmetrical hybrid magnetic levitation system provided according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a metal rotor levitation position test of a single degree of freedom compact symmetrical hybrid magnetic levitation system provided according to an embodiment of the present application;
in the figure: 1-first permanent magnet, 2-second permanent magnet, 3-first control coil, 4-second control coil, 5-metal rotor, 6-control circuit.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the present application provides a single-degree-of-freedom compact symmetrical hybrid magnetic levitation system, which is characterized by comprising a first permanent magnet 1, a second permanent magnet 2, a first control coil 3, a second control coil 4, a metal rotor 5 and a control circuit 6, wherein: the first control coil 3 and the second control coil 4 are symmetrically arranged on two sides of the metal rotor 5, and the distance between the first control coil 3 and the metal rotor 5 is the same as the distance between the second control coil 4 and the metal rotor 5; the first permanent magnet 1 and the second permanent magnet 2 are symmetrically arranged on two sides of the metal rotor 5, the first permanent magnet 1 is arranged on the outer side of the first control coil 3, the second permanent magnet 2 is arranged on the outer side of the second control coil 4, and the distance between the first permanent magnet 1 and the first control coil 3 is the same as the distance between the second permanent magnet 2 and the second control coil 4; the centers of the first permanent magnet 1, the second permanent magnet 2, the first control coil 3, the second control coil 4 and the metal rotor 5 are all on the same axis; the control circuit 6 is connected to the positive electrode of the first control coil 3 and the positive electrode of the second control coil 4, respectively, and the negative electrode of the first control coil 3 is connected to the negative electrode of the second control coil 4.
Specifically, the single-degree-of-freedom compact symmetrical hybrid magnetic suspension system provided by the embodiment of the application controls the control coils through the control circuit 6, and alternating current excitation and direct current excitation are respectively loaded on the first control coil 3 and the second control coil 4: when alternating current excitation is loaded, an alternating current magnetic field is generated between the two control coils, so that an eddy current effect is generated by the middle metal rotor 5, the eddy current effect can generate a magnetic field opposite to a changing magnetic field generated by the control coils, the magnetic field change caused by the control coils is blocked, and the control coils show the change of equivalent resistance, so that the position of the metal rotor 5 is detected; when direct current excitation is loaded, the two control coils generate electromagnetic force to act together with the first permanent magnet 1 and the second permanent magnet 2, and the directions of magnetic fields generated by the two coils are the same, so that the two coils represent attractive force to the metal rotor 5, repulsive force to realize the position adjustment of the metal rotor 5, and the two coils can keep a magnetic suspension state. The two groups of permanent magnets and the two groups of control coils are symmetrically arranged on the metal rotor 5, and the centers of the two groups of permanent magnets and the two groups of control coils are positioned on the same axis, so that the modularized design of the whole system is realized; when the metal rotor 5 is at the balance position, the distances between the first control coil 3 and the second control coil 4 and the metal rotor 5 are the same, so that the control coil has better sensitivity and linearity as a displacement sensor when the metal rotor 5 is in contact with the coil (+ -maximum value) and when the metal rotor 5 is at the center position; the change of the distance between the permanent magnet and the control coil can affect the rigidity coefficient and the current coefficient regulated by the metal rotor 5, so that the distance between the first permanent magnet 1 and the first control coil 3 and the distance between the second permanent magnet 2 and the second control coil 4 are regulated according to the characteristics of the metal rotor 5 or actual use conditions before use, and the distance is kept constant after the regulation is finished.
Furthermore, the magnetic pole directions of the first permanent magnet 1 and the second permanent magnet 2 are the same, and the materials are neodymium iron boron materials. The first permanent magnet 1 and the second permanent magnet 2 are preferably cylindrical in shape, the material is preferably neodymium iron boron material, the first permanent magnet 1 and the second permanent magnet are arranged in the same direction, and the magnetic pole directions are the same and are all upward in the S pole direction. The first permanent magnet 1 and the second permanent magnet 2 are mainly used for forming a magnetic field, are arranged in the same direction, are different in poles at two ends of the metal rotor 5, and are matched with a control coil to support the metal rotor 5 for levitation.
Further, the anodes of the first control coil 3 and the second control coil 4 are connected with the anode of the direct current power supply, and the cathodes of the first control coil 3 and the second control coil 4 are connected with the cathode of the direct current power supply. The direct current power supply is used for providing current to the control coil so as to generate magnetic force. The positive poles of the first control coil 3 and the second control coil 4 are connected with a +3V direct current power supply, and the negative poles are connected with the negative poles of the direct current power supply.
Further, the first control coil 3 and the second control coil 4 are iron-core-free control coils, and after the iron-core-free control coils are connected with a direct current power supply, the polarities of the first control coil 3 and the second control coil 4 are opposite. Since the iron core brings additional hysteresis loss, the first control coil 3 and the second control coil 4 are preferably coreless control coils; the first control coil 3 and the second control coil 4 are connected in series into the control circuit 6, and when the winding direction meets the condition that the positive electrode is connected with the positive electrode of the direct current power supply and the negative electrode is connected with the negative electrode of the direct current power supply, the polarities of the first control coil 3 and the second control coil 4 are opposite, and the first control coil and the second control coil are used for a sensor for detecting the displacement of the metal rotor 5 on one hand and an actuator for adjusting the position of the metal rotor 5 on the other hand.
Further, the material of the metal rotor 5 is a martensitic stainless steel material. The metal rotor 5 on the one hand serves as a position sensor for determining the position signal of the suspension and on the other hand as a suspension. The material of the metal rotor 5 is preferably martensitic stainless steel material with carbon content of 1% and chromium content of 16%, and the diameter is preferably 4.5mm; before suspension, the metal rotor 5 needs to be magnetized, in the use process, the metal rotor 5 can be placed in a non-magnetic stainless steel tube and slowly placed at a suspension position, and at the moment, due to the effect of a permanent magnet bias magnetic field, the metal rotor 5 is restrained at a middle position and cannot slide down to two ends of the stainless steel tube.
Further, as shown in fig. 2, the control circuit 6 includes a controller module, an ac-dc coupling bridge, and a phase sensitive detection module, where: the AC/DC coupling bridge is connected with the positive poles of the first control coil 3 and the second control coil 4 and is used for loading AC excitation and DC excitation to the first control coil 3 and the second control coil 4; the phase-sensitive detection module is respectively connected with the AC/DC coupling bridge and the controller and is used for displacement detection, after the metal rotor 5 deviates from the central position, phase deviation corresponding to the displacement can be generated, the phase-sensitive detection module demodulates the phase-sensitive detection module into a DC voltage component, and the component and the displacement are in a linear relation, so that the detection of the displacement is realized; the controller module is connected with the AC/DC coupling bridge and is used for PID control to control the output DC voltage, and the controller module mainly performs PID control according to the displacement signal output by the phase sensitive detection, so as to control the output DC voltage.
Further, the system also comprises a signal generator and an adder, wherein: the signal generator is connected with the phase-sensitive detection module and is used for providing a high-frequency excitation signal for displacement detection, and the high-frequency excitation signal is loaded to the control coil to form an eddy current sensor so as to realize displacement detection; the adder is arranged between the phase sensitive detection module and the controller module and is used for non-negative conversion of the displacement signal, and the adder realizes the non-negative conversion of the displacement signal because the metal rotor 5 can deviate to generate positive displacement and negative displacement.
More specifically, as shown in fig. 3, after the control circuit 6 is connected to a power supply, under the high-frequency ac excitation action of the first control coil 3 and the second control coil 4, the changing magnetic field around the metal rotor 5 generates an eddy current effect on the surface of the metal rotor 5, meanwhile, the eddy current on the surface of the metal rotor 5 generates a magnetic field opposite to the changing magnetic field generated by the control coil, which blocks the magnetic field change caused by the control coil, finally, the control coil shows a change of equivalent resistance, the closer the metal rotor 5 is to the control coil on one side, the stronger the magnetic resistance on the other side is, the resistance of the control coil on the one side is increased, the change corresponds to the position of the metal rotor 5 in space, through the detection of the rotor displacement, the position signal is transmitted to a controller module in the control circuit 6, through the PID adjustment of the displacement voltage signal obtained through the processing of the phase sensitive detection module, the voltage (direct current excitation) is loaded to the control coil after being converted into the control signal, the voltage is loaded to the control coil through the power amplifier, the direct current loading is realized, the rotor displacement is regulated, and the stable suspension of the rotor in the center position is realized; in fig. 3, in a suspended state after normal operation, the rotor is located at the center, and the direct current signal loaded in the control coil tends to or equals zero, so that the power is reduced to the minimum.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (7)
1. The utility model provides a single degree of freedom compact symmetry mixes magnetic suspension system which characterized in that, includes first permanent magnet, second permanent magnet, first control coil, second control coil, metal rotor and control circuit, wherein:
the first control coil and the second control coil are symmetrically arranged on two sides of the metal rotor, and the distance between the first control coil and the metal rotor is the same as the distance between the second control coil and the metal rotor;
the first permanent magnet and the second permanent magnet are symmetrically arranged on two sides of the metal rotor, the first permanent magnet is arranged on the outer side of the first control coil, the second permanent magnet is arranged on the outer side of the second control coil, and the distance between the first permanent magnet and the first control coil is the same as the distance between the second permanent magnet and the second control coil;
the centers of the first permanent magnet, the second permanent magnet, the first control coil, the second control coil and the metal rotor are all on the same axis;
the control circuit is respectively connected with the positive electrode of the first control coil and the positive electrode of the second control coil, and the negative electrode of the first control coil is connected with the negative electrode of the second control coil.
2. The single degree of freedom compact type symmetrical hybrid magnetic levitation system of claim 1, wherein the first permanent magnet and the second permanent magnet have the same magnetic pole direction, and the materials are neodymium iron boron materials.
3. The single degree of freedom compact symmetrical hybrid magnetic levitation system of claim 1 wherein the anodes of the first control coil and the second control coil are both connected to the anode of a dc power source and the cathodes of the first control coil and the second control coil are both connected to the cathode of the dc power source.
4. A single degree of freedom compact symmetrical hybrid magnetic levitation system according to claim 3 wherein the first control coil and the second control coil are iron core free control coils having opposite polarities after connection to a dc power supply.
5. The single degree of freedom compact symmetrical hybrid magnetic levitation system of claim 1 wherein the material of the metallic rotor is martensitic stainless steel material.
6. The single degree of freedom compact symmetrical hybrid magnetic levitation system of claim 1 wherein the control circuit comprises a controller module, an ac-dc coupled bridge, and a phase sensitive detection module, wherein:
the alternating current-direct current coupling bridge is connected with the anodes of the first control coil and the second control coil and is used for loading alternating current excitation and direct current excitation to the first control coil and the second control coil;
the phase-sensitive detection module is respectively connected with the AC-DC coupling bridge and the controller and used for detecting displacement;
the controller module is connected with the AC-DC coupling bridge and is used for PID control and realizing control of the output DC voltage.
7. The single degree of freedom compact symmetrical hybrid magnetic levitation system of claim 6, further comprising a signal generator and an adder, wherein:
the signal generator is connected with the phase sensitive detection module and is used for providing a high-frequency excitation signal for displacement detection;
the adder is arranged between the phase sensitive detection module and the controller module and is used for non-negative conversion of the displacement signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310068193.3A CN116412211A (en) | 2023-02-03 | 2023-02-03 | Single-degree-of-freedom compact symmetrical hybrid magnetic suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310068193.3A CN116412211A (en) | 2023-02-03 | 2023-02-03 | Single-degree-of-freedom compact symmetrical hybrid magnetic suspension system |
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| Publication Number | Publication Date |
|---|---|
| CN116412211A true CN116412211A (en) | 2023-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310068193.3A Pending CN116412211A (en) | 2023-02-03 | 2023-02-03 | Single-degree-of-freedom compact symmetrical hybrid magnetic suspension system |
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| Country | Link |
|---|---|
| CN (1) | CN116412211A (en) |
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2023
- 2023-02-03 CN CN202310068193.3A patent/CN116412211A/en active Pending
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